Proton Radioactivity from Highly Deformed Nuclei

Journal Article · Sun Mar 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.1849· OSTI ID:579968

Davids, C N; Seweryniak, D; Sonzogni, A A; Henderson, D J; Uusitalo, J ^[1]; Woods, P J; Davinson, T; Irvine, R J ^[2]; Seweryniak, D; Walters, W B ^[3]; Batchelder, J C ^[4]; Bingham, C R ^[5]; Poli, G L ^[6]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. University of Edinburgh, Edinburgh, EH9 3JZ (United Kingdom)
3. Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States)
4. UNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States)
5. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
6. Istituto Fisica Generale Applicata, University of Milano, I-20133 Milano (Italy)

Proton radioactivity from {sup 141}Ho and {sup 131}Eu has been identified. The {sup 141}Ho proton transition has an energy E{sub p}=1169(8) keV, a half-life t{sub 1/2}=4.2(4) ms, and is assigned to the decay of the 7/2{sup {minus}}[523] Nilsson state. The {sup 131}Eu transition has an energy E{sub p}=950(8) keV and a half-life of 26(6) ms, consistent with decay from either the 3/2{sup +}[411] or 5/2{sup +}[413] Nilsson orbital. The proton decay rates deviate significantly from calculations assuming spherical configurations, and thus indicate the onset of large deformations in the region of the proton drip line below Z=69 . {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 579968
• Journal Information: Physical Review Letters, Vol. 80, Issue 9; Other Information: PBD: Mar 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DEFORMED NUCLEI
RADIOACTIVITY
PROTONS
HOLMIUM
EUROPIUM
HALF-LIFE
PROTON DECAY RADIOISOTOPES
ANGULAR MOMENTUM