EVEN-PARITY BANDS OF 108, 110, 112Ru-Reference-Cited by-同舟云学术

EVEN-PARITY BANDS OF 108, 110, 112Ru

Published:2009-09 Issue:08 Volume:18 Page:1717-1739
ISSN:0218-3013
Container-title:International Journal of Modern Physics E
language:en
Short-container-title:Int. J. Mod. Phys. E

Author:

ZHU S. J.¹²³,LUO Y. X.²⁴,HAMILTON J. H.²,RAMAYYA A. V.²,CHE X. L.¹,JIANG Z.¹,HWANG J. K.²,WOOD J. L.⁵,STOYER M. A.⁶,DONANGELO R.⁷,COLE J. D.⁸,GOODIN C.²,RASMUSSEN J. O.⁴

Affiliation:

1. Physics Department, Tsinghua University, Beijing 100084, China

2. Physics Department, Vanderbilt University, Nashville, TN 37235, USA

3. Joint Institute for Heavy Ion Research, Oak Ridge National Lab, Oak Ridge, TN 37830, USA

4. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

5. School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA

6. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

7. Universidade Federal do Rio de Janeiro, CP 68528, RJ, Brazil

8. Idaho National Laboratory, Idaho Falls, ID 83415, USA

Abstract

High-spin, even-parity bands in neutron-rich 108, 110, 112 Ru nuclei were reinvestigated and considerably expanded by measuring many-fold prompt γ-ray coincidence events following the spontaneous fission of 252 Cf with Gammasphere. Our high statistics data allow us to detect weaker transitions and bands not previously published. Also, gamma branching ratios, which are important for theory, are carefully measured from all levels. In 110 Ru , we find a doubling of levels for both ground and quasi-gamma bands above the 8+ levels. There are likely two-phonon quasi-gamma bands in 110, 112 Ru , as well as a bandhead level in 108 Ru . The odd–even spin energy band staggering observed in the quasi-gamma bands in 108, 110, 112 Ru and the doubling of levels in 110 Ru present a challenge to theory.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218301309013798

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