Atomic effects of beta decay in astrophysics and in elementary particle physics
The thesis consists mainly of two parts. The first part is a study of the bound-state {beta} decay of {sup 187}Re and its application in Astrophysics. There existed an uncertainty in the ratio {rho}{sub b} of bound-state to continuum {beta} decay of {sup 187}Re in both theory and experiment. A more definite theoretical result of {rho}{sub b} {approximately} 1% is obtained by using single-configuration and multi-configuration Hartree-Fock-Dirac approximations. The results obtained are close to those obtained by Williams, Fowler, and Koonin by a modified Thomas-Fermi model. The bound-state {beta} decay of {sup 187}Re at high temperatures is also studied. The second part of the thesis is a generalization of the Thomas-Fermi results of various energy contribution to the ground-state energy of a neutral atom. An analytical expression for the ratio of the electron-electron to electron-nuclear interaction is obtained by the corrected Thomas-Fermi result, the ratio obtained gives a better agreement with the Hartree-Fock numerical results.
- Research Organization:
- New York Univ., NY (USA)
- OSTI ID:
- 7164041
- Country of Publication:
- United States
- Language:
- English
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Bound-state decay of Rhenium-187
Some atomic effects in. beta. decay, with one application to astrophysics and one to elementary particle physics
Related Subjects
645200 -- High Energy Physics-- Particle Interactions & Properties-Theoretical
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYTICAL SOLUTION
ASTROPHYSICS
ATOMIC MODELS
ATOMIC PHYSICS
ATOMS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOUND STATE
DECAY
ELECTRON-ELECTRON INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ENERGY LEVELS
GROUND STATES
HARTREE-FOCK METHOD
HEAVY NUCLEI
HIGH TEMPERATURE
INTERACTIONS
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATHEMATICAL MODELS
NUCLEAR DECAY
NUCLEI
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PHYSICS
RADIOISOTOPES
RHENIUM 187
RHENIUM ISOTOPES
STABLE ISOTOPES
THOMAS-FERMI MODEL
USES
YEARS LIVING RADIOISOTOPES