Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260BhReaction

Journal Article · Mon May 07 00:00:00 EDT 2007 · Physical Review Letters

OSTI ID:923353

Nelson, Sarah L; Gregorich, Kenneth E; Dragojevic, Irena; Garcia, Mitch A; Gates, Jacklyn M; Sudowe, Ralf; Nitsche, Heino

The lightest isotope of Bh known was produced in the new {sup 209}Bi({sup 52}Cr,n){sup 260}Bh reaction at the Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. Positive identification was made by observation of eight correlated alpha particle decay chains in the focal plane detector of the Berkeley Gas-Filled Separator. {sup 260}Bh decays with a 35{sub -9}{sup +19} ms half-life by alpha particle emission mainly by a group at 10.16 MeV. The measured cross section of 59{sub -20}{sup +29} pb is approximately a factor of four larger than compared to recent model predictions. The influences of the N = 152 and Z = 108 shells on alpha decay properties are discussed.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director. Office of Science. NuclearPhysics
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 923353
• Report Number(s): LBNL-62629; PRLTAO; R&D Project: NHEAVY; BnR: KB0401022; TRN: US0801814
• Journal Information: Physical Review Letters, Vol. 100; Related Information: Journal Publication Date: 2008; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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ALPHA DECAY
ALPHA PARTICLES
CROSS SECTIONS
DECAY
HALF-LIFE