Doubly-decoupled band in odd-odd {sup 178}Ir

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243793

Jin, H Q; Bernstein, L A; Cizewski, J A ^[1]

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1. and others

Odd-odd nuclei are very complicated systems because many coupling schemes are possible between the various quasi-particle configurations. By studying these nuclei one can test different coupling schemes and their effects on the nuclear structure, e.g., the blocking effect. The previously unknown odd-odd nucleus {sup 178}Ir has been studied via the reactions {sup 156}Gd({sup 27}Al,5n) and {sup 152}Sm({sup 31}P,5n). The measurements were performed at the Holifield Heavy Ion Research Facility using the Spin Spectrometer and the Compact Ge array. The excitation functions and the multiplicity K distributions of {gamma} rays were used to identify transitions belonging to this nucleus. The preliminary study leads to assignment of several rotational bands in {sup 178}Ir, among them a doubly-decoupled band that resembles those in heavier Ir isotopes. The nature of this band and other band assignments, based on signature splitting and B(M1)/B(E2) ratios, will be discussed.

• OSTI ID: 243793
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALUMINIUM 27 REACTIONS
GADOLINIUM 156 TARGET
IRIDIUM 178
NEUTRONS
PHOSPHORUS 31 REACTIONS
ROTATIONAL STATES
SAMARIUM 152 TARGET