High-spin {mu}s isomer in {sup 98}Zr

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

DOI:https://doi.org/10.1103/PHYSREVC.74.064308· OSTI ID:20864196

Simpson, G S ^[1]; Pinston, J A; Genevey, J ^[2]; Balabanski, D ^[3]; Georgiev, G ^[4]; Jolie, J; Warr, N ^[5]; Judson, D S ^[6]; Orlandi, R ^[1]; Scherillo, A ^[1]; Tsekhanovich, I ^[1]; Urban, W ^[7]

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1. Institut Laue-Langevin, B.P. 156, F-38042 Grenoble Cedex 9 (France)
2. Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-Centre National de la Recherche Scientifique/Universite Joseph Fourier, F-38026 Grenoble Cedex (France)
3. Dipartimento di Matematica e Fisica, Universita di Camerino, via Madonna delle Carceri, I-62032 Camerino (Italy)
4. Centre de Spectometrie Nucleaire et de Spectrometrie de Masse, F-91405 Orsay (France)
5. Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicherstr. 77, D-50937 Cologne (Germany)
6. School of Engineering, University of Brighton, Brighton BN2 4GJ (United Kingdom)
7. Faculty of Physics, Warsaw University, ul.Hoza 69, PL-00-681 Warsaw (Poland)

A high-spin isomer in {sup 98}Zr, of half-life 1.9 (2) {mu}s, has been observed using the Lohengrin mass spectrometer of the high-flux reactor of the Institut Laue-Langevin, Grenoble. The isomer was produced by the thermal-neutron induced fission of {sup 239}Pu. Measurements at the spectrometer focal point of {gamma}-t and {gamma}-{gamma}-t, relative to the arrival of a fission fragment, allowed the isomer to be identified and the level scheme constructed. The isomeric state at 6603.3 keV of excitation energy is tentatively assigned a spin and parity of (17{sup -}) and is proposed to have a {pi}(g{sub 9/2}{sup 2}){nu}(g{sub 7/2}{sup 1}h{sub 11/2}{sup 1}) configuration.

• OSTI ID: 20864196
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 74; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EXCITATION
FISSION
FISSION FRAGMENTS
HALF-LIFE
HIGH SPIN STATES
ISOMERIC NUCLEI
KEV RANGE
MASS SPECTROSCOPY
PARITY
PLUTONIUM 239
SPIN
THERMAL NEUTRONS
ZIRCONIUM 98