Additional Results from the Beta-delayed Proton Decays of {sup27}P and {sup 31}Cl

Journal Article · Wed May 01 04:00:00 EDT 1996 · Physical Review C

OSTI ID:902126

Ognibene, T J; Powell, J; Moltz, Dennis M; Rowe, M W; Cerny, J

Beta-delayed proton decays of the nuclides P-27 and Cl-31were measured using the helium-jet recoil collection technique andlow-energy particle identification detector telescopes. In P-27, two newproton groups at 466+/-3 keV and 612+/-2 keV, with intensities of 9+/-2percent and 97+/-3 percent relative to the main (100 percent) group at731+/-2 keV, were discovered. Additionally, during the P-27 experiments,a new proton transition was identified following the beta decay of P-28.This group, at a proton energy of 1452+/-4 keV, had a 2+/-1 percentintensity relative to the 100 percent group at 679+/-1 keV. A total P-27beta-delayed proton branch of 0.07 percent was estimated. Theexperimental Gamow-Teller beta-decay strengths of the observedtransitions from P-27 were compared to results from shell modelcalculations. A search for new proton transitions in Cl-31, the nextmember of this A = 4n + 3, T-z = -3/2 series, was unsuccessful. However.several proton peaks that had been previously assigned to Cl-31 decaywere shown to be from the decay of Si-25.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 902126
• Report Number(s): LBNL--38847
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 54
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
DECAY
DELAYED PROTONS
ISOTOPES
PARTICLE IDENTIFICATION
PROTONS
SHELL MODELS
TELESCOPES