Excitation energy of the {pi}s{sub 1/2} intruder state in {sup 189}Bi

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · Bulletin of the American Physical Society

OSTI ID:256481

Batchelder, J C; Zganjar, E F; Toth, K S ^[1]

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1. and others

In a series of {sup 48}Ti bombardments of {sup 144}Sm the decay energy of the {sup 189}Bi{sup m} {pi}s{sub 1/2}{alpha} transition that proceeds to the {pi}s {sub 1/2} ground state of {sup 185}Tl was measured to be 7.30(4) MeV. This result establishes the excitation energy of {sup 189}Bi{sup m} as {sup 190}(40) keV rather than the adopted 92(10)-keV value. Our data indicate a leveling off in excitation energy at N {approx} 106 for the s{sub 1/2} intruder state in odd-A Bi isotopes rather than a continued drop at that neutron number as inferred by Coenen et al. in their discussion of intruder state systematics in the Pb region.

• DOE Contract Number: FG05-84ER40159; AC05-84OR21400; FG05-87ER40361
• OSTI ID: 256481
• Report Number(s): CONF-9510116--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 10 Vol. 40; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA DECAY
BISMUTH 189
NUCLEAR STRUCTURE