Jun 21 – 26, 2015
Dipartimento di Fisica ed Astronomia, Università di Catania
Europe/Rome timezone
All the plenary sessions will be transmitted in streaming on the web. From Monday, June 22nd, a link will be available <a href='http://www.streamago.tv/channel/54955/default/iframe/' target='blank'> here </a>

Exploring the high spin states of $^{88}Zr$

Not scheduled
30m
Aula Magna (Dipartimento di Fisica ed Astronomia, Università di Catania)

Aula Magna

Dipartimento di Fisica ed Astronomia, Università di Catania

Via Santa Sofia, 64 95123, Catania, Italy
Poster Nuclear Structure

Speaker

Mr Sudipta Saha (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India)

Click here to download the template: <a href="https://agenda.infn.it/materialDisplay.py?materialId=3&confId=5235"> Word </a>, <a href="https://agenda.infn.it/materialDisplay.py?materialId=2&confId=5235">Latex</a>

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\noindent{\underline{The 12th International Conference on Nucleus-Nucleus Collisions, June 21-26, 2015, Catania, Italy}}

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{\large \bf Exploring the high spin states of $^{88}$Zr}
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\underline{S. Saha}$^1$, R. Palit$^{1}$, J. Sethi$^{1}$, S. Biswas$^{1}$, P. Singh$^{1}$, D. Choudhury$^{1}$, P. C. Srivastava$^{2}$
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{\em $^1$ Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India} \
{\em $^2$ Department of Physics, Indian Institute of Technology, Roorkee - 247667, India}\
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Understanding of the complex structure and dynamics of a nuclear system
requires investigation of motion of the constituent nucleons and their mutual
interactions. The high spin states of a nucleus near shell closure provide unique
test bench for exclusively studying the excitations of the valence shell nucleons
in the nuclear mean field and the residual interactions. In addition, a number of
interesting phenomena are observed in doubly closed shell nuclei, like, the evolution of
collectivity and presence of high spin isomers, to mention a few \cite{heyde11}.
Nuclei around $^{90}$Zr having $Z = 40$ sub-shell closure and $N = 50$ major shell
closure are perfect candidates to probe these emergent phenomena \cite{ssaha12}.
Recently, the high spin states of $^{88}$Zr were populated with $^{13}$C($^{80}$Se,$5n$)
reaction using $^{13}$C beam at 60 MeV from TIFR-BARC pelletron facility \cite{ssaha14}.
The $\gamma$-rays emitted from the residual nuclei were detected using 18 Compton suppressed
clover HPGe array, know as INGA \cite{pa12}. The energy, spin and parity of several
states of $^{88}$Zr have been assigned. The results have been compared with large scale shell
model calculations for full unrestricted $f_5pg_9$ model space using two recently
developed interactions JUN45 \cite{honma09} and jj44b \cite{brown}. Although, there
are overall good agreement between the calculated and the experimental results, at
high spin their differences have been observed to be increased. To explore further higher
spin states a more symmetric reaction was performed using $^{30}$Si beam and $^{65}$Cu target
at 137 MeV. A number of high energy transitions have been observed
indicating contribution from particle excitation across the 50 shell gap.
In this conference, the spectroscopic study of $^{88}$Zr produced using the two
different reactions will be presented and the results will be interpreted using large
scale shell model calculations.

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\begin{thebibliography}{20}

\bibitem{heyde11} K. Heyde and J. L. Wood, Rev. Mod. Phys. {\bf 83} (2011) 1467.
\bibitem{ssaha12} S. Saha {\it et al.}, Phys. Rev. C {\bf 86} (2012) 034315.
\bibitem{ssaha14} S. Saha {\it et al.}, Phys. Rev. C {\bf 89} (2014) 044315.
\bibitem{pa12} R. Palit {\it et al.}, Nucl. Instrum. Methods A {\bf 680} (2012) 90.
\bibitem{honma09} M. Honma, T. Otsuka, T. Mizusaki and M Hojorth-Jensen, Phys. Rev. C {\bf 80} (2009) 064323.
\bibitem{brown} B. A. Brown and A. F. Lisetski (unpublished).

\end{thebibliography}

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Primary author

Mr Sudipta Saha (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India)

Co-authors

Dr Deepika Choudhury (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India) Mrs Jasmine Sethi (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India) Dr P. C. Srivastava (Department of Physics, Indian Institute of Technology, Roorkee - 247667, India) Dr Purnima Singh (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India) Prof. Rudrajyoti Palit (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India) Mrs Sayani Biswas (Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai - 400005, India)

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