Isospin mixing in magnesium-24

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6486118

Hoyle, C D

The ..beta..-..gamma.. circular polarization correlation asymmetry was measured for the pure Gamow-Teller decay of /sup 28/Al, for the pure Fermi decay of /sup 14/O and for the mixed decay of the /sup 24/Al 4+ ground state to the 8.437 MeV. 4+ state in /sup 24/Mg. The expected results were obtained for the pure Gamow-Teller and Fermi decays. From the results of the /sup 24/Al decay the isospin mixing of the 8.437 MeV, 4+ state and the 9.515 MeV, 4+ analog state in /sup 24/Mg was determined. The charge dependent matrix element mixing these two states was determined to be -95 +/- 36 keV. This is the largest charge dependent matrix element observed in ..beta.. decay to date. This large value has not been completely explained and suggests the existence of a ..delta..T = 1 nuclear force.

• Research Organization: Washington Univ., Seattle (USA)
• OSTI ID: 6486118
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALUMINIUM 24
ALUMINIUM 28
ALUMINIUM ISOTOPES
ASYMMETRY
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CONFIGURATION MIXING
DATA
DECAY
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERACTIONS
ISOBARIC ANALOGS
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 24
MAGNESIUM ISOTOPES
MATRIX ELEMENTS
MINUTES LIVING RADIOISOTOPES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OXYGEN 14
OXYGEN ISOTOPES
POLARIZATION
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES