Identification of {sup 162}Gd and a new type of identical bands

Journal Article · Tue Dec 01 04:00:00 EST 1998 · AIP Conference Proceedings

OSTI ID:700438

Jones, E F; Gore, P M; Hamilton, J H; Ramayya, A V; Dodder, R S; Beyer, C J; Hwang, J K; Zhang, X Q; Zhu, S H; de Lima, A P; Ter-Akopian, G M; Ter-Akopian, G M; Aryaeinejad, R ^[1]; Oganessian, Yu Ts; Daniel, A V ^[2]; Asztalos, S J; Lee, I Y ^[3]

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1. Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415-2114 (United States)
2. Joint Institute for Nuclear Research, Dubna 141980 (Russia)
3. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

From {gamma}-{gamma}-{gamma} coincidence measurements in spontaneous fission of {sup 252}Cf, level energies were established to spins 14{sup +} to 20{sup +} in many neutron-rich nuclei. New isotope {sup 162}Gd was identified. Yrast bands of {sup 152,154,156}Nd, {sup 156,158,160}Sm, and {sup 160,162}Gd exhibit near-identical transition energies and moments of inertia (MOI) shifted by the same constant amounts for every spin state from 2{sup +} to 12{sup +} or 14{sup +} for nuclei differing by 2n, 4n, 2p, 4p, {alpha}, {alpha}+2p, and {alpha}+2n. These shifted identical bands (SIB) are a new phenomenon. Analysis of all known even-even proton- to neutron-rich nuclei from Ba(Z=56) to Os(Z=76) reveal no SIB for proton-rich nuclei and few cases of SIB for the most neutron-rich pairs around N=98{endash}102 separated by 2n and 2p. {copyright} {ital 1998 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098; AC07-76ID01570; FG02-88ER40407; W-7405-ENG-48
• OSTI ID: 700438
• Report Number(s): CONF-980672--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 455; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALIFORNIUM
CALIFORNIUM 252
COINCIDENCE METHODS
GADOLINIUM
GADOLINIUM ISOTOPES
GAMMA SPECTRA
MOMENT OF INERTIA
NEODYMIUM ISOTOPES
SAMARIUM ISOTOPES
SPONTANEOUS FISSION
YRAST STATES