COINCIDENCE MEASUREMENTS IN NUCLEAR DECAY SCHEME STUDIES
Thesis/Dissertation
·
OSTI ID:4137419
The decay schemes of the isomers of Tc/sup 95/ and Tc/sup 97/ were studied by using high-resolution conversionelectron spectrographs, gamma-ray scintillation detectors, and coincidence techniques. The half life of the 74.6- kev excited state in Np/sup 239/ was measured by the delayed coincidence technique as 1.2 plus or minus 0.1 m mu scc. The directional correlations of two gamma-ray cascades following the beta decay of U/sup 237/ to Np/sup 237/ were studied and the results were found to be consistent with previous assignments of the total angular momenta of the excited states. An upper limit on the half life of the 332-kev excited state in Np/sup 237/ was determined to be 1.0 M mu sec. Electron-electron coincidence measurements were performed on the beta decay of Pa/ sup 233/. The transmission of one-half of the original electron-electron coincidence spectrometer was increased by a factor of six without sacrificing resolution. This increased transmission was achieved by converting the original thin-lens magnetic field to a thick-lens triangular magnetic field. (auth)
- Research Organization:
- California. Univ., Berkeley. Lawrence Radiation Lab.
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-14-016247
- OSTI ID:
- 4137419
- Report Number(s):
- UCRL-9105
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANGULAR DISTRIBUTION-- ANGULAR MOMENTUM-- BETA DECAY-- COINCIDENCE METHODS-- ENERGY LEVELS-- EXCITATION-- GAMMA RADIATION-- HALF-LIFE-- MEASURED VALUES-- MOMENTUM-- NEPTUNIUM 237-- PHOTONS-- URANIUM 237
BETA DECAY-- BETA DETECTION-- BETA PARTICLES-- BETA SPECTROMETERS-- COINCIDENCE METHODS-- INSTRUMENTS-- MAGNETIC FIELDS-- MEASURED VALUES-- PROTACTINIUM 233-- RESOLUTION
BETA DETECTION-- BETA SPECTROMETERS-- COINCIDENCE METHODS-- DECAY-- ELECTRONS-- GAMMA DETECTION-- GAMMA SPECTROMETERS-- INTERNAL CONVERSION-- ISOMERS-- MEASURED VALUES-- NUCLEI-- RESOLUTION-- SCINTILLATION COUNTERS-- TECHNETIUM 95-- TECHNETIUM 97
COINCIDENCE METHODS-- DECAY
PHYSICS
BETA DECAY-- BETA DETECTION-- BETA PARTICLES-- BETA SPECTROMETERS-- COINCIDENCE METHODS-- INSTRUMENTS-- MAGNETIC FIELDS-- MEASURED VALUES-- PROTACTINIUM 233-- RESOLUTION
BETA DETECTION-- BETA SPECTROMETERS-- COINCIDENCE METHODS-- DECAY-- ELECTRONS-- GAMMA DETECTION-- GAMMA SPECTROMETERS-- INTERNAL CONVERSION-- ISOMERS-- MEASURED VALUES-- NUCLEI-- RESOLUTION-- SCINTILLATION COUNTERS-- TECHNETIUM 95-- TECHNETIUM 97
COINCIDENCE METHODS-- DECAY
PHYSICS