Doorway-state formation and structure in /beta/-delayed proton decay

Journal Article · Mon Jun 12 04:00:00 EDT 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.62.2805· OSTI ID:5724771

Nitschke, J M; Wilmarth, P A; Firestone, R B; Moller, P; Toth, K S; Gilat, J

The structure in the /beta/-delayed proton spectra of the precursors /sup 1//sub 66//sup 47/Dy/sup /ital g//, /sup 1//sub 68//sup 49/Er/sup /ital g//, and /sup 1//sub 70//sup 51/Yb/sup /ital g// is analyzed within the framework of a doorway-state model. Indications from /gamma/-ray decay studies, /beta/ strength-function measurements, and calculations of state densities and Gamow-Teller strength distributions, lead us to suggest that some of the observed proton transitions arise from the preequilibrium decay of doorway states populated in /beta//sup +/ decay or electron capture.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (US)
• DOE Contract Number: AC03-76SF00098; AC05-84OR21400
• OSTI ID: 5724771
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:24; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651820* -- Nuclear Properties & Reactions
A=150-189
Experimental
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BETA DECAY
BETA-PLUS DECAY
CAPTURE
DATA
DATA ANALYSIS
DECAY
DEFORMATION
DELAYED PROTONS
DYSPROSIUM 147
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE
ELEMENTARY PARTICLES
ENERGY LEVELS
ERBIUM 149
ERBIUM ISOTOPES
EVEN-ODD NUCLEI
EXCITED STATES
FERMIONS
GAMOW-TELLER RULES
HADRONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR DECAY
NUCLEAR DEFORMATION
NUCLEI
NUCLEONS
NUMERICAL DATA
PROTON SPECTRA
PROTONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
SPECTRA
YTTERBIUM 151
YTTERBIUM ISOTOPES