Charge distribution of excited isomeric nuclei and atomic spectra. (The Nuclear Isomeric Shift)

Technical Report · Tue Jul 01 04:00:00 EDT 1958

OSTI ID:4297429

Weiner, Richard

Some general theoretical aspects of charge distribution in odd nuclei are studied. Single-particle transitions, and validity of the Rosenthal-Breit perturbation theory are assumed. Under these assumptions it is shown that except for sign, the effect is a pure single particle effect, given by the optical nucleons. The sign of the shift is generally intimately related to the whole nuclear configuration. In the case of two characteristic transitions, it is shown that the order of magnitude of the effect does not depend on the shape of nuclear potential. The general formulas of the shift for odd-even and even-odd nuclei are given. By considering two particular forms of nuclear potential (harmonic oscillator and infinite square well), it is shown that there exists a very simple relation between the shift and the characteristics of the two nuclear states involved. At the odd-even nuclei the theoretical value of the effect is surely within the reach of atomic spectroscopy, but the specific interest of the phenomenon lies here in the possible study of a pure bound neutron-electron interaction. The importance of an experimental proof of the effect which become a new tool in the research of nuclear structure and a strong test of the validity of the hypotheses is emphasized.

• Research Organization: Joint Institute for Nuclear Research (JINR), Dubna (Russian Federation)
• NSA Number: NSA-13-000352
• OSTI ID: 4297429
• Report Number(s): NP-6962
• Country of Publication: Russian Federation
• Language: English

Related Subjects

ATOMS
CONFIGURATION
DISTRIBUTION
ELECTRIC CHARGES
ELECTRONS
ENERGY LEVELS
GOLD 197
INTERACTIONS
LEAD 207
MERCURY 197
NEUTRONS
NUCLEAR MODELS
NUCLEAR POTENTIAL
NUCLEI
NUCLEONS
NUMERICALS
OPTICAL MODEL
PERTURBATION THEORY
PHYSICS AND MATHEMATICS
SPECTRAL SHIFT
SPECTROSCOPY
TIN 115