Jun 13 – 17, 2022
Berkeley, CA
US/Pacific timezone

Investigation of low-lying nuclear structure in stable Zn-isotopes

Not scheduled
1m
Berkeley, CA

Berkeley, CA

Lawrence Berkeley National Laboratory
Oral Poster Presentations Poster Session

Speaker

Mr I Ahmed (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067)

Description

A series of multi-step coulomb excitation experiments were carried out at GDA laboratory of IUAC New Delhi in order to investigate the low-lying electromagnetic nuclear structure of $^{64,68,70}$Zn nuclei, wherein the available information is rather diluted. The reduced transition strength B(E2; $4_{1}^+ \rightarrow 2_{1}^+$) and B(E2; $2_{1}^+ \rightarrow 0_{1}^+$) in few Zn-isotopes shows a larger discrepancy among the results obtained from different experimental techniques using RDDS and DSAM methods of finding lifetime of a state and hence the transition probabilities. Similarly the spectroscopic quadrupole moment of 2$_{1}^+$ in $^{68}$Zn is negative in an electron scattering experiment while it is positive from another multi-step Coulomb excitation experiment, which is apparently contradictory. Some previous studies have shown that the low-lying nuclear structure of Zn-isotopes is not as straightforward as is portrayed in the level-structure diagram. Coulomb excitation has the advantage of studying the low-lying structure model-independently and devoid of uncertainties that afflict many other spectroscopic probes.


References:
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Primary author

Mr I Ahmed (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067)

Co-authors

Dr M Saxena (Institute of Nuclear and Particle Physics, Department of Physics & Astronomy, Ohio University, Athens, Ohio 45701 USA) Dr R Kumar (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Dr A Jhingan (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Mr M Kumar (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Dr S Dutt (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Ms A Rathi (Department of Physics, Panjab University, Chandigarh- 160014, INDIA.) Mr Yashraj - (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Mr S Kumar (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Mr Chandra Kumar (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Dr P K Giri (Department of Physics, Chandigarh University, Mohali, Punjab-140413, India) Mrs D Arora (Nuclear Physics Group, Inter-University Accelerator Centre, New Delhi - 110067, INDIA) Ms P S Rawat (Department of Physics, University of Delhi, New Delhi-110007, INDIA) Dr S Appannababu (Department of Nuclear Physics, Andhra University, Visakhapatnam-530 003, India) Prof. P Doornenbal (RIKEN Nishina Center, Wako, Saitama 351-0198, Japan) Prof. H J Wollersheim (Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany)

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