First observation of low-lying excited states in the very neutron-rich {sup 95}Kr

Journal Article · Wed Mar 15 04:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.037308· OSTI ID:20771407

Genevey, J; Guglielmini, R; Pinston, J A ^[1]; Orlandi, R ^[2]; Scherillo, A ^[2]; Simpson, G ^[1]; Tsekhanovich, I ^[2]; Warr, N; Jolie, J ^[3]

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1. Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS/ Universite Joseph Fourier, F-38026 Grenoble Cedex (France)
2. Institut Laue-Langevin, F-38042 Grenoble Cedex (France)
3. Institut fur Kernphysik, Universitaet zu Koeln Zuelpichestr. 77, D-50937 Cologne (Germany)

Microsecond isomers of neutron-rich nuclei in the mass A=95 chain were investigated at the ILL reactor in Grenoble. These nuclei were produced by thermal-neutron induced fission of {sup 241}Pu. The detection is based on time correlation between fission fragments selected by the Lohengrin mass spectrometer and the {gamma} rays from the isomers. In this article, the decay scheme of an isomer of half-life 1.4(2) {mu}s in {sup 95}Kr is reported. It is the first time that excited states of this nucleus have been measured. These data show that this neutron-rich N=59 isotone is spherical at low excitation energy.

• OSTI ID: 20771407
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
EXCITATION
EXCITED STATES
FISSION
FISSION FRAGMENTS
FISSION PRODUCTS
GAMMA RADIATION
HALF-LIFE
ISOMERIC NUCLEI
KRYPTON 95
LIFETIME
MASS NUMBER
NEUTRON-RICH ISOTOPES
NUCLEAR DECAY
PLUTONIUM 241
PLUTONIUM-GAMMA
THERMAL NEUTRONS