Fine Structure in the Decay of the Highly Deformed Proton Emitter E{number_sign}^131u

Journal Article · Sun Aug 01 00:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.1116· OSTI ID:365896

Sonzogni, A A; Davids, C N; Seweryniak, D; Carpenter, M P; Schwartz, J; Uusitalo, J ^[1]; Woods, P J ^[2]; Seweryniak, D; Ressler, J J; Walters, W B ^[3]; Schwartz, J ^[4]

---

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. Department of Physics, Yale University, New Haven, Connecticut 06511 (United States)

Fine structure in the ground-state proton radioactive decay of highly deformed {sup 131}Eu has been identified. In addition to the previously observed ground-state line, measured here with a proton energy of 932(7) keV, a second proton peak with energy 811(7) keV was observed. We interpret this line as proton decay from the {sup 131}Eu ground state to the first excited 2{sup +} state of the daughter nucleus {sup 130}Sm . Comparing the measured branching ratio with calculations enables the ground-state configuration of {sup 131}Eu to be unambiguously assigned to the 3/2{sup +} [411] Nilsson configuration. {copyright} {ital 1999} {ital The American Physical Society }

• DOE Contract Number: FG02-94ER40834; W-31-109-ENG-38
• OSTI ID: 365896
• Journal Information: Physical Review Letters, Vol. 83, Issue 6; Other Information: PBD: Aug 1999
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
EUROPIUM
FINE STRUCTURE
PROTON DECAY RADIOISOTOPES
GROUND STATES
SAMARIUM
BRANCHING RATIO
DEFORMED NUCLEI