Levels in /sup 43/K and /sup 44/K excited by the. beta. decay of /sup 43/Ar and /sup 44/Ar

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.1803· OSTI ID:6685102

Huck, A; Klotz, G; Knipper, A; Miehe, C; Walter, G; Richard-Serre, C

The nuclides /sup 43/Ar and /sup 44/Ar have been produced by spallation reactions on vanadium targets at E/sub p/ = 600 MeV. The subsequent ..beta.. decays to /sup 43/K and /sup 44/K have been studied via delayed ..gamma..-ray singles and ..gamma..-..gamma.. coincidence techniques. In /sup 43/K, excitation energies and ..gamma..-branching fractions have been determined for 19 levels. The logft values imply J/sup ..pi../ = 3/2/sup -/, 5/2/sup + -/ for the ground state of /sup 43/Ar. For /sup 44/Ar, evidence is found for four new ..beta.. branches and J/sup ..pi../ = 1/sup +/ is assigned to the levels at 2326 and 2574 keV on the basis of the ..beta..-decay selection rules. The proposed decay scheme accounts for ..gamma.. transitions between 10 levels, the first excited state being located at 182.6 keV. The structure of these nuclei is discussed in the weak coupling scheme.

• Research Organization: Centre de Recherches Nucleaires 67037 Stransbourg Cedex, France
• OSTI ID: 6685102
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ANGULAR MOMENTUM
ARGON 43
ARGON 44
ARGON ISOTOPES
BARYON REACTIONS
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DECAY
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FT VALUE
GAMMA SPECTRA
HADRON REACTIONS
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONIC DECAY
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MINUTES LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE DECAY
PARTICLE PROPERTIES
POTASSIUM 43
POTASSIUM 44
POTASSIUM ISOTOPES
PROTON REACTIONS
RADIOISOTOPES
SPALLATION
SPECTRA
SPIN
TARGETS
VANADIUM 50 TARGET
VANADIUM 51 TARGET
WEAK INTERACTIONS
WEAK PARTICLE DECAY
WEAK-COUPLING MODEL