Browsing by Author "Subodh"

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Collective and non-collective states in
(Institute of Physics, 2025) A. K. Gupta; Hariprakash P. Sharma; A. K. Rana; Md Anser; Ishika Sharma; S. S. Tiwary; Saikat Chakraborty; C. Majumder; Anupriya Sharma; Anand Pandey; Anuj; S. K. Chamoli; Sanjeev Suresh Kumar; Kaushik T. Katre; Sivaramakrishnan Muralithar; R. P. Singh; Yashraj; Indu Bala; Arunita Mukherjee; Sutanu Bhattacharya; Tarkeshwar Trivedi; Nikhil Mozumdar; Pratyay Banerjee; Subodh; Anil Kumar
The high spin states of 136Ce (Z = 58) were investigated via 124Sn(16O, 4n)136Ce fusion evaporation reaction at MeV. The γ-γ coincidence technique is used for placing the γ-transitions in the level scheme. The spin and parity of the levels have been assigned on the basis of results of the angular correlation and linear polarisation measurements, respectively. The bands based on the yrast 10+ isomeric state and the non-yrast 10+ state have been established. The structures of these bands are also compared with the band structures of the neighbouring nuclei. © © 2025 EPLA. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
Fission dynamics and entrance-channel study in the Po 210 compound nucleus via light-particle multiplicities
(American Physical Society, 2023) Chetan Sharma; B.R. Behera; Shruti; Amit; Bharti Rohila; Amninderjeet Kaur; Subodh; Neha Dhanda; Ashok Kumar; P. Sugathan; A. Jhingan; K.S. Golda; N. Saneesh; Mohit Kumar; H. Arora; Divya Arora; H.P. Sharma
Neutron multiplicities, folding angle distribution, mass distribution, and mass-energy distribution are measured for the compound nucleus Po210 populated through the C12+Pt198 reaction at an excitation energy of 61.6 MeV. The measured neutron multiplicities are compared with the statistical model code joanne2 to extract total fission time for the Po210 compound nucleus. The total fission time (τtot) obtained for this system is (10±5)×10-21 s at 49 MeV and increases to (23±5)×10-21 at 61.8 MeV excitation energy indicating that dissipation increases with excitation energy. A comparison with τtot of the O18+Os192 reaction populating the same compound nucleus indicates the influence of entrance channel mass asymmetry on the fission time. Dynamical model calculations have been performed to understand the fusion dynamics for these reactions and it is observed that the formation time of the compound nucleus increases as we go from the asymmetric to the symmetric entrance channels. Also, these calculations predict that 93% of the total angular momentum lead to the formation of a fully equilibrated compound nucleus for the C12+Pt198 reaction whereas this percentage decreases to 84%, for the O18+Os192 reaction indicating a higher percentage of noncompound nuclear processes in the latter case. © 2023 American Physical Society.
Investigation of multiple anti-magnetic rotational bands in 106Cd
(Springer, 2025) Diwanshu; Ashok S.k. Kumar; Bharti Rohila; Chetan Kumar Sharma; Subodh; Ishika Sharma; P. S. Rawat; Anand Pandey; Kaushik T. Katre; Honey Arora; U. S. Ghosh; Yashraj; C. Majumder; Hariprakash P. Sharma; S. K. Chamoli; Sanjeev Suresh Kumar; Sivaramakrishnan Muralithar; R. P. Singh
Lifetimes of excited states of positive and negative parity ΔI = 2 bands of 106Cd have been measured using the Doppler Shift Attenuation Method (DSAM). The electric quadrupole reduced transition probability rates, B(E2), show a significant decreasing trend with increasing spin along with large observed ℑ(2)/B(E2) values. The experimental observations, interpreted in the framework of semiclassical particle-rotor model (SCM) calculations, suggest that these bands have the character of twin-shears type anti-magnetic rotational bands resulting from the coupling of g9/2 proton holes with h11/2, g9/2 and d5/2 neutron particles. Another negative-parity band in the same nucleus has been studied using SCM, which also interprets it to be an anti-magnetic rotational band. © The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
MEASUREMENT OF EXCITATION FUNCTION IN THE 16 O + 107Ag SYSTEM AT ENERGIES ABOVE THE COULOMB BARRIER
(National Academy of Sciences of Ukraine, 2025) Diwanshu; Ajay Vinod Kumar; Bharti Rohila; Chetan Kumar Sharma; Subodh; P. S. Rawat; Amit Kumar Pandey; Kaushik T. Katre; Honey Arora; U. S. Ghosh; Yashraj; Isha Sharma; Hariprakash P. Sharma; S. K. Chamoli; S. Dasaratha Kumar; R. P. Singh; Sivaramakrishnan Muralithar
The decay mechanism of the highly excited compound nucleus123Cs populated via fusion evaporation reaction of 16 O and107Ag is studied. De-excitation of the compound nucleus via evaporation of p, n, and α-particles leads to a population of several neutron-deficient residual nuclei. The excitation function for the16O +107Ag reaction has been determined experimentally in the energy range 71-80 MeV above the Coulomb barrier. The experimental results have been analyzed within the framework of statistical codes PACE4 and CASCADE. © The Author(s), 2025.
Revisiting band structures in 118Xe nucleus via in-beam γ-ray spectroscopy
(Institute of Physics, 2023) A. Pandey; R. Bhushan; A. Rohilla; C. Majumder; H.P. Sharma; S. Chakraborty; R.P. Singh; S. Muralithar; Yashraj; K. Katre; B. Rohila; Subodh; A. Kumar; I.M. Govil; S. Jehangir; N. Rather; G.H. Bhati; A.A. Wani; J.A. Sheikh; S.K. Chamoli
The neutron deficient Xe nuclei with A 120 are predicted to have strong octupole correlation at low spins. In the present study, an attempt was made to improve upon the level scheme and also to examine the signatures of octupole correlation in Xe via high spin γ-ray spectroscopy. High spin states in Xe have been populated via the Nb( Si, p2n) Xe fusion-evaporation reaction at a beam energy of 115 MeV provided by the 15 UD pelletron accelerator facility at IUAC, New Delhi. In the experiment, seven new γ-transitions have been found and placed appropriately in the level scheme. A theoretical study using the triaxial projected shell model (TPSM) approach suggests that the first bandcrossing is due to the alignment of two neutrons, and a parallel band tracking the yrast configuration is the γ-band built on the two-quasiparticle state. Enhanced E1 transition rates measured between opposite parity bands involving νh and ν d orbitals having Δj = Δl = 3 indicate the presence of octupole correlation in this nucleus. © 2023 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
Study of nuclear structure in 122Ba from DCO Ratio and Polarization measurements
(Springer, 2025) Bharti Rohila; Ashok S.k. Kumar; Diwanshu; Chetan Kumar Sharma; Amit; Subodh; Honey Arora; Mehak Narula; Nabeel Salim; Paramasivan Arumugam; Md Anser; Hariprakash P. Sharma; Anand Pandey; S. K. Chamoli; Kaushik T. Katre; Yashraj; R. P. Singh; Sivaramakrishnan Muralithar
High-spin states in 122Ba have been investigated in the 93Nb(32S, p2n) reaction by in-beam γ-ray spectroscopy. Spin and parity have been determined for few bands using the DCO ratio and polarization measurements. The cranked shell model calculations have been performed to reproduce the band crossing frequencies and alignment gain in order to assign the configuration. © The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.