Lifetime measurements and nuclear deformation in the $A\ensuremath{\approx}100$ region

Lifetime measurements and nuclear deformation in the $A \approx 100$ region

A. G. Smith, J. L. Durell, W. R. Phillips, W. Urban, P. Sarriguren, and I. Ahmad

Phys. Rev. C 86, 014321 – Published 19 July 2012

Abstract

The EUROGAM-2 array has been used to study $γ$ rays emitted following the spontaneous fission of a $^{248}$ Cm source. Analysis of Doppler-broadened lineshapes corresponding to transitions from excited rotational states in neutron-rich Sr, Zr, Mo, Ru, and Pd fission fragments has enabled measurements of state lifetimes in these nuclei at nuclear spins of $I \sim 10$ . Extracted transition quadrupole moments are compared with various recent theoretical approaches, as well as with measurements at lower spin, and an interpretation of the data is made within the context of prolate-oblate shape competition in this region.

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Received 25 May 2012

DOI:https://doi.org/10.1103/PhysRevC.86.014321

Authors & Affiliations

A. G. Smith, J. L. Durell, W. R. Phillips, and W. Urban^*

School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom

P. Sarriguren

Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid, Spain

I. Ahmad

Argonne National Laboratory, Argonne, Illinois 60439, USA

^*Present addresses: Institut Laue-Langevin, B.P. 156, F-38042 Grenoble Cedex 9, France and Faculty of Physics, University of Warsaw, ul.Hoża 69, PL-00-681 Warszawa, Poland.

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Vol. 86, Iss. 1 — July 2012

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Physical Review C

covering nuclear physics

Lifetime measurements and nuclear deformation in the $A \approx 100$ region

A. G. Smith, J. L. Durell, W. R. Phillips, W. Urban, P. Sarriguren, and I. Ahmad

Phys. Rev. C 86, 014321 – Published 19 July 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review C

covering nuclear physics

Lifetime measurements and nuclear deformation in the A≈100 region

A. G. Smith, J. L. Durell, W. R. Phillips, W. Urban, P. Sarriguren, and I. Ahmad

Phys. Rev. C 86, 014321 – Published 19 July 2012

Abstract

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Lifetime measurements and nuclear deformation in the $A \approx 100$ region