{alpha}-decay properties of {sup 190}Po and the identification of {sup 191}Po

Journal Article · Thu May 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.R2142· OSTI ID:496902

Batchelder, J C ^[1]; Batchelder, J C; Zganjar, E F ^[2]; Toth, K S; Bingham, C R ^[3]; Bingham, C R; Wauters, J ^[4]; Brown, L T; Davids, C N; Seweryniak, D ^[5]; Brown, L T; Conticchio, L F; Seweryniak, D ^[6]; Conticchio, L F ^[7]; Wood, J L ^[8]

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1. UNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States)
2. Louisiana State University, Baton Rouge, Louisiana 70803 (United States)
3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
4. University of Tennessee, Knoxville, Tennessee 37996 (United States)
5. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
6. Vanderbilt University, Nashville, Tennessee 37235 (United States)
7. University of Maryland, College Park, Maryland 20742 (United States)
8. Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

The {alpha}-decay properties of {sup 190}Po were investigated through the use of a fragment mass analyzer in conjunction with a double-sided Si strip detector. The isotope was produced via the {sup 96}Mo({sup 96}Mo,2n) reaction, and its {alpha}-decay energy and T{sub 1/2} were measured as 7529(10) keV and 2.4{sub {minus}0.3}{sup +0.4} ms, respectively. The resulting reduced width is nearly identical to that of the {sup 192,194}Po isotopes. This is believed to result from significant mixing between the ground state {pi}(2p) and the low-lying 0{sup +}{pi}(4p-2h) intruder state in the Po parent. The result provides further evidence for shape coexistence in the light Po isotopes. In addition, {sup 191}Po was unambiguously identified, and the {sup 186}Pb {alpha}-decay branch was determined experimentally for the first time. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Oak Ridge Institute of Science and Education
• DOE Contract Number: AC05-76OR00033; AC05-96OR22464; FG02-96ER40978; FG02-96ER40983; FG05-87ER40330; FG05-88ER40418; W-31109-ENG-38
• OSTI ID: 496902
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA DECAY
GROUND STATES
MASS
MIXING
MOLYBDENUM 96
MOLYBDENUM 96 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR REACTION ANALYZERS
PARTICLE IDENTIFICATION
POLONIUM ISOTOPES