Browsing by Author "Raj Kumar"

Now showing 1 - 20 of 37

A diagnosis of the determinants of dividend payout policy in India: A factor analytical approach
(IGI Global, 2014) Raj Kumar; Pawan Kumar Jha
Dividend decision involves the portion of a firm's net earnings that are paid out to the shareholders, and the remaining is ploughed back in the company for its growth purpose. Despite comprehensive theoretical and empirical explanations, dividend policy and its determinants are a puzzle to be fixed in corporate finance. This chapter is an attempt to assess the dynamics and determinants of dividend-payout policy using a factor analytical tool and a multiple regression analysis as a supportive tool. The authors take into account the sample of ten automobile companies based on Market Capitalization listed on the Bombay Stock Exchange (BSE) for a period of 10 years from 2002-2003 to 2012-2013. The results of the factor analysis show that six factors, current ratio, cash flow, retained earnings per share, earnings per share, equity dividend, and corporate dividend tax, are identified as the most critical factors determining dividend payout in Indian automobile companies. However, regression results depict only three factors (i.e. cash flow, equity dividend, and corporate dividend tax) have been found statistically significant in determining dividend payout policy. © 2014, IGI Global. All rights reserved.
A diagnosis of the determinants of dividend payout policy in India: A factor analytical approach
(IGI Global, 2015) Raj Kumar; Pawan Kumar Jha
Dividend decision involves the portion of a firm's net earnings that are paid out to the shareholders, and the remaining is ploughed back in the company for its growth purpose. Despite comprehensive theoretical and empirical explanations, dividend policy and its determinants are a puzzle to be fixed in corporate finance. This chapter is an attempt to assess the dynamics and determinants of dividend-payout policy using a factor analytical tool and a multiple regression analysis as a supportive tool. The authors take into account the sample of ten automobile companies based on Market Capitalization listed on the Bombay Stock Exchange (BSE) for a period of 10 years from 2002-2003 to 2012-2013. The results of the factor analysis show that six factors, current ratio, cash flow, retained earnings per share, earnings per share, equity dividend, and corporate dividend tax, are identified as the most critical factors determining dividend payout in Indian automobile companies. However, regression results depict only three factors (i.e. cash flow, equity dividend, and corporate dividend tax) have been found statistically significant in determining dividend payout policy. © 2015, IGI Global.
Active-Passive Approach for NISAR High Resolution Soil Moisture Products: Retrieval and Accuracy Assessment over Indian Cropland
(Institute of Electrical and Electronics Engineers Inc., 2021) Dharmendra Kumar Pandey; Srinivasa Teja Noothi; M. Shashi; Prashant K. Srivastava; Anup Das; Om Pal; Kapil Rohilla; Ravindra Prawasi; Nijbul H. Sekh; Sushma Bisht; Deepak Putrevu; Arundhati Misra; Raj Kumar
Soil moisture is an essential variable in agricultural applications for irrigation scheduling, crop water requirements and pest management etc. However, currently available global satellite microwave radiometer derived soil moisture products are inadequate due to coarse spatial resolution for such applications. In order to improve spatial resolution, SMAP (Soil Moisture Active Passive) mission has first time demonstrated the potential of combining microwave radiometer and radar data based on Active-Passive approach to produce 3-9 km soil moisture globally. However, this approach has not been well tested quantitatively at sub km (<1km) grid resolution using spaceborne observations. In this work, we adopted and tested active-passive approach to integrate radiometer derived coarse resolution soil moisture (SMAP L-band radiometer) with fine resolution radar backscatter (Sentinel-1 C-band SAR) to downscale soil moisture at multiple grid resolution (100 m, 500m and 1000 m). The impact of scale on the robustness of the algorithm is analyzed by assessing the soil moisture retrieval accuracy. Detailed validation was attempted using Multi-Scale Field Sampling Framework (MFSF) over selected agricultural cropland study site. The results obtained are very encouraging, showing the potential of Active-Passive approach for high spatial soil moisture with correlation of 0.75, 0.76 & 0.68 and ubRMSE of 4.94%, 6.07% & 7.21% for 100m, 500m and 1km respectively. Based on the above assessment as pre-cursor study, Active-Passive approach will be the potential candidate for utilizing NISAR data to deliver high spatial resolution soil moisture operational products along with radiometer. © 2021 IEEE.
Adoption of Blended Learning Model in Higher Education Post-COVID-19
(CRC Press, 2023) Tejinderpal Singh; Harmeet Kaur Kang; Raj Kumar
[No abstract available]
Al-doped ZnO based long range optical fibre sensor for efficient low refractive index detection
(Springer, 2023) Hemant Kumar; Raj Kumar; Umang Ramani; Bipin K. Singh; Praveen C. Pandey
In this article, a simulation of surface plasmon resonance (SPR) based Al-doped ZnO (AZO) coated long-range low refractive index detections in infrared range sensor by the finite element method is presented. Plasmonic material Al-doped ZnO is used for SPR conditions in the desired range. The effects of AZO layer thickness on resonance wavelength, confinement loss, and sensitivity of the proposed sensor are examined for different analyte refractive indices. We have optimized coated AZO layer thickness of 90 nm and width of 124.70 µm in our work. The proposed infrared sensor has achieved refractive index sensitivity 2000–16,000 nm/RIU, and the resolution 5.00×10-5-6.25×10-6RIU for the analyte’s refractive index range from 1.23 to 1.37. The proposed sensor may be utilized for detecting low refractive index organic chemicals, biomedical, and liquid foods and may also be used in other sensing applications. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Alternative Asian modernities: An introduction
(Taylor and Francis, 2019) Sanjay Kumar; Satya P. Mohanty; Archana Kumar; Raj Kumar
[No abstract available]
An ocean wave transformation model for shallow waters
(1998) A.K. Varma; C.M. Kishtawal; Raj Kumar; W.J. Prakash; P.C. Pandey; K.P. Singh
In this paper a coastal wave transformation model is presented. The implementation of different wave theories and the terms for refraction, shoaling, bottom friction, percolation, viscous dissipation and wave breaking are described. A few trial runs of the model have been made with various deep water wave characteristics. The change in characteristics of a shoreward propagating wave is as expected. A comparative study of model derived wave heights with satellite altimeter wave heights is also done. It is found that model derived wave heights follow the same trend as altimeter wave heights, and thus confirms the validity of the model for estimation of shallow water wave heights.
Analysis of potential neuropharmacological activity and attenuating effect in chronic constriction induced neuropathic pain using Calotropis procera (Aiton) Dryand flower ethanol extract
(Elsevier B.V., 2025) Ashutosh Kumar; Brijesh Pawan Kumar; Raj Kumar; Vinod N. Tiwari; Pratistha K. Singh; Ajay Kumar; Manish Kumar Singh; Chandra Shekhar Azad; Ankit Uniyal
Background: Calotropis procera, also known as "毒竹 du zhu" in Chainese, is used in several remedies to treat a variety of ailments, including inflammatory diseases, skin concerns, pain disorders, and respiratory issues. It has been observed that the various parts of the plant have been traditionally used for as anti-inflammatory and neuroprotective actions. The flower of this herb has not been investigated for these pharmacological properties. Purpose: The aim of this research is to investigate the neuropharmacological profile and ameliorative potential of ethanolic extract of C. procera flower (EECP) in chronic constriction injury (CCI) induced neuropathic pain in rats. Methods: GCMS analysis was performed to identify the active phytocmpounds of the plant. Neuropharmacological profile has been investigated by maximal electroshock seizure and pentylenetetrazole for antiepileptic, elevated maze plus and open field test for anxiety, tail suspension and forced swim test for depressant activity, and acetylcholinesterase and Morris water maze test for cognition. Anti-neuropathic pain was assessed via heat hyperalgesia and mechanical allodynia tests in rats after inducing CCI. Pro-inflammatory mediators (TNF-α, IL-1β, and IL-6) were determined by ELISA kits. SOD and nitrile level were measured for antioxidant activity. Sciatic nerve's histopathological changes for nerve deformity were evaluated by H &E staining. Results: GCMS analysis revealed the presence of phytocompounds Lupeool, acetate, n-hexadecanoic acid, γ-sitosterol, hexadecanoic acid methyl ester, Octadecenoic acid (Z)-, methyl ester, β-Amyrin, phytol and other compounds. In neuropharmacological profile, EECP had a significant anticonvulsant effect, a decrease in locomotor activity, indicating a sedative effect but showed no anxiolytic effect. The immobility time decreased significantly in both the forced swim test and tail suspension test. The activity of acetylcholinesterase in the brain was decreased and Morris water test results revealed a shorter escape latency and greater time spent in the target quadrant. In anti-neuropathic pain assessment, the EECP reduced CCI-induced hyperalgesia and mechanical allodynia. TNF-α, IL-1β, and IL-6 levels were reduced while SOD levels increased and nitrite levels decreased in the sciatic nerve. Histological analysis revealed sciatic nerve deformity was reduced. Conclusion: It is concluded that extract showed a potent antiepileptic, antidepressant, cognition enhancer and protective against nerve deformity and neuropathic pain. Phytocompounds identified via GCMS having neuroprotective, antioxidant, and anti-inflammatory properties, which may be correlated with the neuropharmacological and analgesic activities of the extract. © 2025
China, India and alternative Asian modernities
(Taylor and Francis, 2019) Sanjay Kumar; Satya P. Mohanty; Archana Kumar; Raj Kumar
The conception of modernity as a radical rupture from the past runs parallel to the conception of Europe as the primary locus of global history. The essays in this volume contest the temporal and spatial divisions-between past and present, modernity and tradition, and Europe's progress and Asia's stasis-which the conventional narrative of modernity creates. Drawing on early modern Chinese and Indian history and culture instead, the authors of the book explore the provenance of modernity beyond the west to see it in a transcultural and pluralistic light. The central argument of this volume is that modernity does not have a singular core or essence-a causal centre. Its key features need to be disaggregated and new configurations and combinations imagined. By studying the Bhakti movement, Confucian democracy, and the maritime and agrarian economies of China and India, this book enlarges the terms of debate and revisits devalued terms and concepts like tradition, religion, authority, and rural as resources for modernity. This book will be of great interest to researchers and academicians working in the areas of history, Sociology, Cultural Studies, literature, geopolitics, South Asian and East Asian Studies. © 2019 selection and editorial matter, Sanjay Kumar, Satya P. Mohanty, Archana Kumar and Raj Kumar; individual chapters, the contributors. All right reserved.
Effect of calcination temperature on the structural, microstructure, and electrical properties of CeO2 nanoparticles as a solid electrolyte for IT-SOFC application
(Elsevier B.V., 2024) Raj Kumar; Vedika Yadav; Pinki Singh; Piyush K. Sonkar; Upendra Kumar; Satyendra Singh
This article comprehensively discusses the effect of calcination temperatures such as 400 °C, 600 °C, and 700 °C of the single-phase ceria oxide (CeO2) nanoparticles synthesized via sol–gel chemical root. The first principle calculation performed on the cubic fluorite structure of ceria oxide shows Ce(5d) and O(2p) contributed to the indirect band gap n-type semiconducting response. The structural studies also show the crystallization of CeO2 in the cubic structure with a gradual change in crystallite size, dislocation density, and micro-strain with temperature. The stretching vibration of Ce–O at 437 and 541 cm−1 in the Fourier-transform infrared (FTIR) spectrum reconfirms the monophasic nature of the obtained samples. The morphology of the sintered pellets is strongly affected by varying calcination temperatures, such as lower-temperature calcined materials containing larger grains and vice versa. The X-ray photoelectron spectroscopy (XPS) studies show oxygen vacancies and Ce's mixed states in Ce3+/Ce4+. Arrhenius-type transport behavior was reflected through DC conductivity analysis that reveals the two conduction regions: electrons through Ce's degenerate sites in the region-1 (90–280°C) and oxygen ions in the region-2 (280–410°C). The spectroscopic plots extracted the grain and grain boundary contribution, affecting the electrical properties. The grain boundary has a higher activation energy than the grains due to voids and disordered structures at the interface, similar to DC conduction studies. The sample Ce-4′s blocking factor supports the highest DC conductivity of almost 10−2 S/cm, close to IT-SOFC solid electrolyte conductivity. Therefore, the present study may open the window to commercialize ceria oxide-based solid electrolytes through grain/grain-boundary engineering in IT-SOFCs. © 2024 The Society of Powder Technology Japan
Effect of relative humidity, temperature and fungicide on germination of conidia of Cercospora canescens caused the Cercospora leaf spot disease in mungbean
(2011) Raj Kumar; Manjul Pandey; Ramesh Chandra
The aim of the present investigation was to determine the impact of relative humidity (RH) and temperature on conidial germination, nuclear position and effect of important fungicides on growth and conidial germination of Cercospora canescens. Germination of conidia was observed at RH range 92-100% at 5-35°C. Significant interaction between temperature and RH indicated that higher humidity and high temperature promoted quick germination both in the presence and absence of free moisture. Although in absence of free moisture at 92-95% RH higher temperatures 25-35°C promoted quick evaporation of moisture and no conidial germination. Number of germtube was increased significantly at the optimum temperature 25-30°C and higher humidity (98-100%). But higher temperature 25-35°C with lower RH did not support the conidial germination. This finding is very important for disease forecasting using meteorological data. The spray of Carbendazim as contact fungicide may not be useful since it is not effective against the conidia of C. canescens. Triadimefon did not inhibit the conidia germination but completely inhibited mycelium development at 50 μg/ml. Propriconazole inhibited both conidia germination and mycelial development. Therefore, Propiconazole may be taken as protective as well as curative spray. In non-systemic fungicide, Copper oxychloride gave anticipated result by inhibiting both conidial germination and mycelium development. Therefore, copper oxychloride can be used as protectant fungicides for Cercospora leaf spot caused by C. canescens. © 2011 Taylor & Francis.
Evaluation of elite genotypes of mungbean against Cercospora leaf spot disease (CLS) caused by Cercospora canescens
(2011) Raj Kumar; Manjul Pandey; Ramesh Chandra; R.P. Mishra
The AUDPC is the best measurement of CLS disease of mungbean, since it is based on several readings of disease intensity from the early to the mature stage. Thirtyone genotypes of the mungbean crop showed similar disease reactions at later stages both under the polyhouse and field conditions. Under field conditions, 22 genotypes were found moderately resistant, seven susceptible and two genotypes were highly susceptible, and under polyhouse conditions eight genotypes showed resistance, 19 moderate resistance and four genotypes were found susceptible. © 2011 Taylor & Francis.
Examination of tourism factors affecting tourists’ satisfaction: Evidence from Thimphu, Bhutan
(Apple Academic Press, 2017) Raj Kumar; Dillip Kumar Das; Nilanjan Ray
Tourism is one of the fastest growing industries in the world. It has become one of the vital factors of economic and social benefits to the society. This chapter identifies the impact of tourism in Bhutan and different motivational factors which may directly or indirectly influence the tourist satisfaction. The primary objective of this chapter is to study the growth, development, and emergence of tourism potentials in Bhutan, in particular, as well as to analyze the tourist inflow pattern and also examine the existing and future requirement in the motivational point of view. For the fulfillment of the purposed objective, data for the study were collected through prestructured questionnaire. The sample size was restricted to 100 tourists. Targeted population of this research work is the tourists visiting Bhutan in the month of April, May, June, October, and November. Information gathered about tourists’ motivational factors depends on 20 components. This study is relevant for balancing the demand and supply of tourism motivational requirement indicators which can offer better tourism service excellence in Bhutan. It will also play a vital role in terms of policy implication and to analyze the impact for attaining sustainable tourism development in Bhutan. © 2018 by Apple Academic Press, Inc.
Fluorescent Nanoparticles: An Advanced Approach for Latent Fingerprint Development
(Apple Academic Press, 2025) Sneha Lohar; Poonam Kumari; Badal Mavry; Kapil Parihar; Varad Nagar; Pritam P. Pandit; Mahipal Singh Singh Sankhla; Raj Kumar
One of the most reliable characteristics for identifying someone is their fingerprint. In criminal investigations, recovering or gathering latent fingerprints from the crime scene is crucial. The contrast between the 54ridges and the substrate allows for the detection and description of fine features, which is essential for the successful use of created fingerprints for identification. A nanoparticle, often called an ultrafine particle, is a tiny material particle with a size range of 1–100 nm. Due to their small size, nanomaterials are exceptional in their ability to alter mechanical, electrical, and optical properties. At a crime scene, latent or invisible fingerprints are frequently left behind. Some of the nanoparticles used to obtain latent fingerprints include silica, carbon, aluminium, copper, barium, iron, and vanadium. Traditional methods have drawbacks such as low contrast, sensitivity, selectivity, and danger. These methods include powder dusting, chemical processes, and small particle reagent methods. The creation of latent fingerprints using fluorescent nanoparticles is the main subject of this review. Due to their distinctive optical and chemical properties, fluorescent nanoparticles were chosen because they offer greater contrast and sensitivity than conventional methods while also being less dangerous. © 2026 by Apple Academic Press, Inc.
Hanbury Brown–Twiss approach for imaging through a dynamic scattering medium
(Optica Publishing Group (formerly OSA), 2023) Sourav Chandra; Tushar Sarkar; Raj Kumar; Bhargab Das; Rakesh Kumar Singh
The Hanbury Brown–Twiss approach, associated with the correlation of intensity fluctuations at two different points in a wave field, unveils fundamental aspects of light. Here, we propose and experimentally demonstrate an imaging and phase recovery technique through a dynamic scattering medium using the Hanbury Brown–Twiss approach. A detailed theoretical basis is presented and verified by experimental demonstrations. To validate the application of the proposed technique, the randomness of the dynamically scattered light is exploited using temporal ergodicity for evaluating the correlation of intensity fluctuations and consequently applying it in the reconstruction of the object hidden behind the dynamic diffuser. © 2023 Optica Publishing Group.
High refractive index sensing highly sensitive and low loss SPR sensor based on hollow-core D-shaped optical fiber
(World Scientific, 2024) Hemant Kumar; Umang Ramani; Raj Kumar; Bipin K. Singh; Praveen C. Pandey
A hollow-core D-shaped optical fiber-based surface plasmon resonance (SPR) sensor for low-loss and highly sensitive liquid analytes detection is theoretically investigated. The gold (Au) metal nanolayer is coated on the cladding etched D-shaped °at surface to develop the plasmonic e®ect. The nanolayer coating on the outer °at surface is very easy compared to the inside hollow-core, so our hollow-core sensor manufacturing is too easy compared to other hollow-core refractive indices (RIs) detection sensors. The resonance e®ect between analytes filled fundamental guided core mode and surface plasmon polariton mode of the D-shaped hollow-core optical fiber sensor is used to obtain the detections of analytes RIs variations. We have found good linear results (R2 > 0:99) in analytes RIs versus resonance wavelength for gold layers thicknesses for the analytes RIs range of 1.45–1.52. This hollow-core D-shaped optical fiber sensor achieves the maximum wavelength sensitivity of 23500 nm RIU-1 and a corresponding resolution of 4:26 × 10-6 RIU. We have obtained the maximum figure of merit (FOM) of 228 1/RIU. The proposed sensor may be highly active in detecting the biological and chemical liquid analytes. © World Scientific Publishing Company.
HRD, a tool of performance: A case study of non-teaching staff of B.H.U.
(AMSE Press, 1994) Raj Kumar; Sant Ram Singh; Arvind Singh Tomar
The results of non-teaching personnel efficiency evaluation conducted at the Banaras Hindu University are presented. The analysis of data regarding the work performance with reference to a variety of situations and work activities reveals that the employees work performance in BHU show to a great extent a permissive, considerate and creative behaviour and as a whole their work performance in their respective functions are satisfactory which is the firm base that human resource development (HRD) at the work place is quite significant but limited on the job not only by other means of HRD like training, developmental programmes for employees and so on.
Indian Guidelines on Nebulization Therapy
(Tuberculosis Association of India, 2022) S.K. Katiyar; S.N. Gaur; R.N. Solanki; Nikhil Sarangdhar; J.C. Suri; Raj Kumar; G.C. Khilnani; Dhruva Chaudhary; Rupak Singla; Parvaiz A. Koul; Ashok A. Mahashur; A.G. Ghoshal; D. Behera; D.J. Christopher; Deepak Talwar; Dhiman Ganguly; H. Paramesh; K.B. Gupta; Mohan Kumar T; P.D. Motiani; P.S. Shankar; Rajesh Chawla; Randeep Guleria; S.K. Jindal; S.K. Luhadia; V.K. Arora; V.K. Vijayan; Abhishek Faye; Aditya Jindal; Amit K. Murar; Anand Jaiswal; Arunachalam M; A.K. Janmeja; Brijesh Prajapat; C. Ravindran; Debajyoti Bhattacharyya; George D'Souza; Inderpaul Singh Sehgal; J.K. Samaria; Jogesh Sarma; Lalit Singh; M.K. Sen; Mahendra K. Bainara; Mansi Gupta; Nilkanth T. Awad; Narayan Mishra; Naveed N. Shah; Neetu Jain; Prasanta R. Mohapatra; Parul Mrigpuri; Pawan Tiwari; R. Narasimhan; R. Vijai Kumar; Rajendra Prasad; Rajesh Swarnakar; Rakesh K. Chawla; Rohit Kumar; S. Chakrabarti; Sandeep Katiyar; Saurabh Mittal; Sonam Spalgais; Subhadeep Saha; Surya Kant; V.K. Singh; Vijay Hadda; Vikas Kumar; Virendra Singh; Vishal Chopra; Visweswaran B
Inhalational therapy, today, happens to be the mainstay of treatment in obstructive airway diseases (OADs), such as asthma, chronic obstructive pulmonary disease (COPD), and is also in the present, used in a variety of other pulmonary and even non-pulmonary disorders. Hand-held inhalation devices may often be difficult to use, particularly for children, elderly, debilitated or distressed patients. Nebulization therapy emerges as a good option in these cases besides being useful in the home care, emergency room and critical care settings. With so many advancements taking place in nebulizer technology; availability of a plethora of drug formulations for its use, and the widening scope of this therapy; medical practitioners, respiratory therapists, and other health care personnel face the challenge of choosing appropriate inhalation devices and drug formulations, besides their rational application and use in different clinical situations. Adequate maintenance of nebulizer equipment including their disinfection and storage are the other relevant issues requiring guidance. Injudicious and improper use of nebulizers and their poor maintenance can sometimes lead to serious health hazards, nosocomial infections, transmission of infection, and other adverse outcomes. Thus, it is imperative to have a proper national guideline on nebulization practices to bridge the knowledge gaps amongst various health care personnel involved in this practice. It will also serve as an educational and scientific resource for healthcare professionals, as well as promote future research by identifying neglected and ignored areas in this field. Such comprehensive guidelines on this subject have not been available in the country and the only available proper international guidelines were released in 1997 which have not been updated for a noticeably long period of over two decades, though many changes and advancements have taken place in this technology in the recent past. Much of nebulization practices in the present may not be evidence-based and even some of these, the way they are currently used, may be ineffective or even harmful. Recognizing the knowledge deficit and paucity of guidelines on the usage of nebulizers in various settings such as inpatient, out-patient, emergency room, critical care, and domiciliary use in India in a wide variety of indications to standardize nebulization practices and to address many other related issues; National College of Chest Physicians (India), commissioned a National task force consisting of eminent experts in the field of Pulmonary Medicine from different backgrounds and different parts of the country to review the available evidence from the medical literature on the scientific principles and clinical practices of nebulization therapy and to formulate evidence-based guidelines on it. The guideline is based on all possible literature that could be explored with the best available evidence and incorporating expert opinions. To support the guideline with high-quality evidence, a systematic search of the electronic databases was performed to identify the relevant studies, position papers, consensus reports, and recommendations published. Rating of the level of the quality of evidence and the strength of recommendation was done using the GRADE system. Six topics were identified, each given to one group of experts comprising of advisors, chairpersons, convenor and members, and such six groups (A-F) were formed and the consensus recommendations of each group was included as a section in the guidelines (Sections I to VI). The topics included were: A. Introduction, basic principles and technical aspects of nebulization, types of equipment, their choice, use, and maintenance B. Nebulization therapy in obstructive airway diseases C. Nebulization therapy in the intensive care unit D. Use of various drugs (other than bronchodilators and inhaled corticosteroids) by nebulized route and miscellaneous uses of nebulization therapy E. Domiciliary/Home/Maintenance nebulization therapy; public & health care workers education, and F. Nebulization therapy in COVID-19 pandemic and in patients of other contagious viral respiratory infections (included later considering the crisis created due to COVID-19 pandemic). Various issues in different sections have been discussed in the form of questions, followed by point-wise evidence statements based on the existing knowledge, and recommendations have been formulated. © 2022 Tuberculosis Association of India
Indian National Gamma Array at Inter University Accelerator Centre, New Delhi
(2010) S. Muralithar; K. Rani; R. Kumar; R.P. Singh; J.J. Das; J. Gehlot; K.S. Golda; A. Jhingan; N. Madhavan; S. Nath; P. Sugathan; T. Varughese; M. Archunan; P. Barua; A. Gupta; M. Jain; A. Kothari; B.P.A. Kumar; A.J. Malyadri; U.G. Naik; Raj Kumar; Rajesh Kumar; J. Zacharias; S. Rao; S.K. Saini; S.K. Suman; M. Kumar; E.T. Subramaniam; S. Venkataramanan; A. Dhal; G. Jnaneswari; D. Negi; M.K. Raju; T. Trivedi; R.K. Bhowmik
A 4π multi-detector gamma-ray spectrometer named the Indian National Gamma Array (INGA) has been set up at the Inter University Accelerator Centre, New Delhi, for nuclear structure studies. The array is designed to incorporate twenty four Compton-suppressed Clover germanium detectors with a total photopeak efficiency ∼5%. The spectrometer along with sub-systems developed in-house like, mechanical support structure, high voltage power supplies, automatic liquid nitrogen filling system, front-end electronics and data acquisition system are described. The mechanical support structure facilitates the use of the Clover Germanium array with a recoil mass separator. The array has been used in a number of nuclear spectroscopic investigations. The in-beam and off-beam performance of the array are reported. © 2010 Elsevier B.V.
Indian National Gamma Array at IUAC
(Institute of Physics Publishing, 2011) S. Muralithar; K. Rani; R.P. Singh; R. Kumar; J.J. Das; J. Gehlot; K.S. Golda; A. Jhingan; N. Madhavan; S. Nath; P. Sugathan; T. Varughese; M. Archunan; P. Barua; A. Gupta; M. Jain; A. Kothari; B.P.A. Kumar; A.J. Malyadri; U.G. Naik; Raj Kumar; Rajesh Kumar; J. Zacharias; S. Rao; S.K. Saini; S.K. Suman; M. Kumar; E.T. Subramaniam; S. Venkataramanan; A. Dhal; G. Jnaneswari; D. Negi; M.K. Raju; T. Trivedi; R.K. Bhowmik
Indian National Gamma Array (INGA) is a 4π multi-detector gamma-ray spectrometer based on twenty four Compton-suppressed Clover Germanium detectors with a total photo peak efficiency ∼ 5 %. INGA was designed to perform high resolution gamma-ray spectroscopy to study nuclear structure at high spins with stable ion beams at Inter University Accelerator Centre (IUAC). Description of the facility and performance of the array are presented in this paper. Since its commissioning, a number of nuclear spectroscopic investigations have been carried out using the array.