Isospin mixing in magnesium-24

Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1980

DOI:https://doi.org/10.2172/5632285· OSTI ID:5632285

Hoyle, Charles David ^[1]

---

1. Univ. of Washington, Seattle, WA (United States)

The ß-γ circular polarization correlation asymmetry was measured for the pure Gamow-Teller decay of ²⁸Al, for the pure Fermi decay of ¹⁴O and for the mixed decay of the ²⁴Al 4⁺ ground state to the 8.437 MeV, 4⁺ state in ²⁴Mg. The expected results were obtained for the pure Gamow-Teller and Fermi decays. From the results of the ²⁴Al 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 β decay to date. This large value has not been completely explained and suggests the existence of a ΔT = 1 nuclear force.

• Research Organization: Univ. of Washington, Seattle, WA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER)
• DOE Contract Number: AC06-76ER01388
• OSTI ID: 5632285
• Report Number(s): DOE/ER/01388--513; ON: DE82011084
• Country of Publication: United States
• Language: English

Related Subjects

651322 -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
651422 -- Nuclear Properties & Reactions
A=20-38
Experimental-- Radioactive Decay-- (-1987)
651423* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALUMINIUM 24
ALUMINIUM 28
ALUMINIUM ISOTOPES
ANGULAR CORRELATION
ASYMMETRY
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CORRELATIONS
DATA
DECAY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GAMOW-TELLER RULES
INFORMATION
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 24
MAGNESIUM ISOTOPES
MATRIX ELEMENTS
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OXYGEN 14
OXYGEN ISOTOPES
PARTICLE PROPERTIES
POLARIZATION
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SILICON 27
SILICON ISOTOPES
STABLE ISOTOPES