The Imaginary Part of the Optical Potential

Journal Article · Fri May 01 04:00:00 EDT 1959 · Progress of Theoretical Physics (Kyoto)

DOI:https://doi.org/10.1143/PTP.21.681· OSTI ID:4233488

Sugie, Atsushi

The form of the imaginary pant of the optical potential is derived as an operator for the finite nucleus. This is done by reducing the Schrcedinger equation approximately. It is essentially a second order calculation but is supported by the intermediate coupling model and the assumption that the non- diagonal elements of the interaction matrix have random signs. The imaginary part thus obtained is a nonlocal but almost separable potential. The form allows the physical interpretation that the imaginary part corresponds to the prccess in which the incident nucleon jumps down to an uncoupled single particle state below the incident energy and excites the target nucleus making the total energy nearly conserved. It is suggested that the imaginary part may become abruptly stronger as ths shape resource is passed since in tris case there is a single particle state just below the incident energy and the corresponding excited states of the target are near the ground state. The relation to Blech's theory is also discussed. (auth)

• Research Organization: JAERI, Tokai-mura, Ibaragi-ken, Japan
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-002122
• OSTI ID: 4233488
• Journal Information: Progress of Theoretical Physics (Kyoto), Journal Name: Progress of Theoretical Physics (Kyoto) Journal Issue: 5 Vol. 21; ISSN 0033-068X
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BLOCH THEORY
ELECTRONS
ENERGY LEVELS
EXCITATION
INTERACTIONS
INTERMEDIATE COUPLING
J-J COUPLING
L-S COUPLING
LATTICES
MATHEMATICS
MATRICES
NON-LOCAL POTENTIAL
NUCLEAR MODELS
NUCLEI
NUCLEONS
OPERATORS
OPTICAL MODEL
PHYSICS
QUANTUM MECHANICS
RESONANCE
SCHROEDINGER EQUATION
SINGLE- PARTICLE MODEL
STATISTICS