The nuclear spins and moments of several radioactive gallium isotopes

Thesis/Dissertation · Fri Mar 18 00:00:00 EST 1960

DOI:https://doi.org/10.2172/4164894· OSTI ID:4164894

Ehlers, Vernon James ^[1]

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1. Univ. of California, Berkeley, CA (United States)

An atomic-beam magnetic-resonance technique with radioactive detection was used to investigate several radioactive gallium isotopes. The nuclear spin of 21-min Ga⁷⁰ was determined to be 1, and the hyperfine structure separations of 68-min Ga⁶⁸ and 78-hr Ga⁶⁷ were measured. The Ga⁶⁷ was measured in both the ²P_3/2 and the ²P_1/2 electronic states and the differential hyperfine structure anomaly ⁶⁷δ ⁶⁹ determined. The Ga⁶⁸ was measured in the ²P/sub 3/2 state and exhibited a very small magnetic moment, causing an inversion of the energy levels. For an assumed positive magnetic moment the decreasing energy level sequence is F = 5/2, 1/2, /3/2. The nuclear moments were obtained by the use of thc Fermi-Segre formula and previously measured moments and interaction constants of Ga⁶⁹.

• Research Organization: Univ. of California, Berkeley, CA (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-14-016248
• OSTI ID: 4164894
• Report Number(s): UCRL-9123
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOMIC MODELS
ATOMS
BEAMS
CONFIGURATION
ELECTRONS
ENERGY LEVELS
FERMI INTERACTION
FERMI-SEGRE FORMULA
GALLIUM 67
GALLIUM 68
GALLIUM 69
GALLIUM 70
HALF-LIFE
HYPERFINE STRUCTURE
MAGNETIC MOMENTS
MAGNETIC RESONANCE
MEASURED VALUES
NUCLEAR MODELS
NUCLEAR STRUCTURE
NUCLEAR THEORY
NUCLEI
RADIOACTIVITY
SHELL MODELS
SPIN