ANGULAR CORRELATION PERTURBED BY AN ANISOTROPIC HYPERFINE INTERACTION

Journal Article · Fri Mar 01 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.129.2117· OSTI ID:4762732

Leisi, H J; Deck, R T

A theoretical investigation is made of the effect on a gamma-gamma angular correlation of the extranuclear perturbations which arise from the coupling between the magnetic dipole and electric quadrupole moments of the nucleus and the electromagnetic field of the electron shell in a paramagnetic crystal of axial symmetry. The hyperfine interaction is assumed to be time independent. Results are obtained for both single-crystal and polycrystalline sources. For a single-crystal source, the effect on the correlation of an external magnetic field parallel to the crystalline axis is investigated. The behavior of the correlation over the whole range of partially to fully decoupled nuclear and electronic spins is calculated. It is shown that under certain conditions an angular correlation resonance experiment'' is possible, i.e., an experiment in which the coincidence counting rate, for fixed positions of the detectors, exhibits sharp interference peaks as a function of the magnetic field. For a powder source, the attenuation factors are computed as a function of the hyperfine constants for arbitrary nuclear spin values. New possibilities for investigation of nuclear moments of excited states are discussed. (auth)

• Research Organization: Franklin Inst., Swarthmore, Penna.
• NSA Number: NSA-17-013159
• OSTI ID: 4762732
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 129; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
ANISOTROPY
COINCIDENCE METHODS
COUPLING
CRYSTALS
DIPOLES
ELECTRIC MOMENTS
ELECTROMAGNETIC FIELDS
ELECTRONS
ENERGY LEVELS
EXCITATION
GAMMA RADIATION
HYPERFINE STRUCTURE
INTERACTIONS
LATTICES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MONOCRYSTALS
NUCLEAR MODELS
PHYSICS
POWDERS
QUADRUPOLES
RADIATION SOURCES
RESONANCE
SPECTRA
SPIN
SYMMETRY