Browsing by Author "S. Dutt"

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    PublicationArticle
    Investigation of an intruder band in 45 Sc via coulomb excitation ∗
    (Jagellonian University, 2019) M. Matejska-Minda; R. Kumar; P.J. Napiorkowski; M. Saxena; S. Dutt; A. Agarwal; I. Ahmed; S. Bhattacharya; A. Jhingan; J. Kaur; M. Kicińska-Habior; M. Kumar; S. Kumar; D. Kumar; V. Nanal; R. Palit; N.K. Rai; M. Shuaib; A. Sood; A. Stolarz; T. Trivedi; A.K. Tyagi; R.K. Bhowmik; H.J. Wollersheim
    In order to gain further information on the electromagnetic properties of the low-lying states in 45 Sc, a Coulomb excitation measurement was carried out at the IUAC, New Delhi. The 45 Sc target nuclei were Coulomb excited by the 70 MeV 32 S beam from the 15UD tandem accelerator. The γ-rays depopulating Coulomb excited states in 45 Sc were detected by four Clover detectors in coincidence with the forward scattered ions. The main aim of the experiment was to determine the B(E3; 7/2 − → 3/2 + ) and B(E3; 7/2 − → 5/2 + ) transition probabilities, as well as the transitional electromagnetic matrix elements for low-lying intruder states. © 2019 Jagellonian University. All Rights Reserved.
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    No evidence of reduced collectivity in Coulomb-excited Sn isotopes
    (American Physical Society, 2017) R. Kumar; M. Saxena; P. Doornenbal; A. Jhingan; A. Banerjee; R.K. Bhowmik; S. Dutt; R. Garg; C. Joshi; V. Mishra; P.J. Napiorkowski; S. Prajapati; P.-A. Söderström; N. Kumar; H.-J. Wollersheim
    In a series of Coulomb excitation experiments the first excited 2+ states in semimagic Sn112,116,118,120,122,124 isotopes were excited using a Ni58 beam at safe Coulomb energy. The B(E2; 0+→2+) values were determined with high precision (∼3%) relative to Ni58 projectile excitation. These results disagree with previously reported B(E2↑) values [A. Jungclaus, Phys. Lett. B 695, 110 (2011).PYLBAJ0370-269310.1016/j.physletb.2010.11.012] extracted from Doppler-shift attenuation lifetime measurements, whereas the reported mass dependence of B(E2↑) values is very similar to a recent Coulomb excitation study [J. M. Allmond, Phys. Rev. C 92, 041303(R) (2015)PRVCAN0556-281310.1103/PhysRevC.92.041303]. The stable Sn isotopes, key nuclei in nuclear structure, show no evidence of reduced collectivity and we, thus, reconfirm the nonsymmetric behavior of reduced transition probabilities with respect to the midshell A=116. © 2017 American Physical Society.
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    Revised lifetime of the 11/2- state in 45Sc via coulomb excitation
    (Jagellonian University, 2020) M. Matejska-Minda; P.J. Napiorkowski; R. Kumar; M. Saxena; S. Dutt; A. Agarwal; I. Ahmed; S. Bhattacharya; A. Jhingan; J. Kaur; M. Kicińska-Habior; M. Kumar; S. Kumar; D. Kumar; V. Nanal; R. Palit; N.K. Rai; M. Shuaib; A. Sood; A. Stolarz; T. Trivedi; A.K. Tyagi; R.K. Bhowmik; H.J. Wollersheim
    A Coulomb-excitation measurement to study low-energy electromagnetic properties of 45Sc has been performed at the IUAC facility in New Delhi, India using a 70 MeV 32S projectile from the 15UD tandem accelerator. The preliminary value of the reduced transition probability B(E2; 11/2- → 7/2-) and the resulting lifetime for the 11/2- state at 1237 keV were determined using the GOSIA code. © 2020 Jagellonian University. All rights reserved.
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    STRUCTURE OF LOW-SPIN STATES IN45Sc STUDIED VIA COULOMB EXCITATION
    (Jagiellonian University, 2024) M. Matejska-Minda; P.J. Napiorkowski; K. Sieja; P. Bednarczyk; T. Abraham; A. Agarwal; I. Ahmed; S. Bhattacharya; R.K. Bhowmik; D.T. Doherty; S. Dutt; K. Hadyńska-Klęk; J. Iwanicki; A. Jhingan; J. Kaur; M. Kicińska-Habior; M. Kisieliński; M. Komorowska; M. Kowalczyk; M. Kumar; R. Kumar; S. Kumar; D. Kumar; A. Maj; T. Marchlewski; P. Matuszczak; V. Nanal; A. Nannini; M. Palacz; R. Palit; L. Próchniak; N.K. Rai; M. Rocchini; M. Saxena; W. Satuła; M. Shuaib; M. Siciliano; A. Sood; J. Srebrny; A. Stolarz; J. Styczeń; T. Trivedi; A.K. Tyagi; B. Wasilewska; H.J. Wollersheim; K. Wrzosek-Lipska; M. Zielińska
    The electromagnetic structure of45Sc at low excitation energy was investigated via low-energy Coulomb excitation at the Heavy Ion Laboratory (HIL) of the University of Warsaw and at the Inter-University Accelerator Centre (IUAC) in New Delhi. A set of reduced E2, E3, and M1 matrix elements was extracted from the collected data using the GOSIA code. The reduced transition probability B(E2; 11/2− → 7/2−) has been determined, allowing us to deduce the lifetime of the 11/2− state at 1237 keV. In addition, the upper limit on the reduced transition probability B(E3; 7/2− → 5/2+) has been determined for the first time. New large-scale shell-model and beyond-mean-field calculations were performed to interpret the structure of this nucleus. © 2024 Jagiellonian University. All rights reserved.
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