MUON CAPTURE IN HELIUM-3. Thesis
Thesis/Dissertation
·
OSTI ID:4126470
Negative muons were stopped in a He/sup 3/ gas scintillation counter, and the rate of the interaction mu /sup -/ + He/sup 3/ -- H/sup 3/ + n was measured, where the produced H/sup 3/ nucleus is in the ground state. The interaction was identified by the characteristic 1.9 Mev pulse produced in the He/ sup 3/ scintillant by the monoenergic recoil tritium nucleus. Decay electrons from the competing muon decay process were counted in a xenon gas scintillation counter that surrounded the cubical He/sup 3/ target on 5 sides. The efficiency of electron detection was measured directly. The counters were constructed almost entirely of materials with high atomic number, and muon interactions in the materials were distinguished by their characteristic short muon-disappearance mean lives. Contamination of the data by muons stopping in residual low-Z material was evaluated by replacing the He/sup 3/ in the target counter with xenon, so that the only counts exhibiting a long mean-life were due to that contamination. The capture rate was found from the ratio of the number of captures to the number of decays times the known decay rate. The result for the capture rate to the ground state is (gnd/c) = (1.48 plus or minus 0.29/0.27) x 10/sup 3/ sec/sup -1/. This result is in agreement with theoretical calculations based on the universality of the V-A Fermi interaction and the validity of the Feynman-Gell-Mann conserved vector current hypothesis. (Dissertation Abstr., 24: No. 4, Oct. 1963)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-004624
- OSTI ID:
- 4126470
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
BETA DECAY
CAPTURE
CONTAMINATION
COUNTERS
CVC THEORY
DECAY
EFFICIENCY
ELECTRIC CHARGES
ELECTRONS
ENERGY LEVELS
FEYNMAN-GELL-MANN THEORY
FIELD THEORY
GASES
HELIUM 3
HYDROGEN 3
INTERACTIONS
LIFETIME
MEASURED VALUES
MUONS
NEUTRINOS
PHYSICS
PULSES
RADIATION DETECTORS
RECOILS
SCINTILLATION COUNTERS
TARGETS
TRITIUM
V-A INTERACTIONS
VECTORS
WEAK INTERACTIONS
XENON
CAPTURE
CONTAMINATION
COUNTERS
CVC THEORY
DECAY
EFFICIENCY
ELECTRIC CHARGES
ELECTRONS
ENERGY LEVELS
FEYNMAN-GELL-MANN THEORY
FIELD THEORY
GASES
HELIUM 3
HYDROGEN 3
INTERACTIONS
LIFETIME
MEASURED VALUES
MUONS
NEUTRINOS
PHYSICS
PULSES
RADIATION DETECTORS
RECOILS
SCINTILLATION COUNTERS
TARGETS
TRITIUM
V-A INTERACTIONS
VECTORS
WEAK INTERACTIONS
XENON