Nuclear excitation of /sup 111/Cd by positron annihilation

Journal Article · Thu May 01 04:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.21.1753· OSTI ID:5447026

Watanabe, Y; Mukoyama, T; Shimizu, S

Nuclear excitation of /sup 111/Cd by positron annihilation has been investigated. The experimental evidence for this process was searched by observing the 245-keV ..gamma.. rays from /sup 111/Cd/sup m/ after irradiation of natural cadmium foils by positrons from the ..beta../sup +/ decay of /sup 64/Cu. For the excited level of 1330 keV in /sup 111/Cd, the experimental cross section of the annihilation-excitation process has been estimated to be less than 8.6 x 10/sup -25/ cm/sup 2/. This upper limit is larger than the simple theoretical estimate. Further improvements of theoretical and experimental studies are discussed.

• Research Organization: Institute for Chemical Research, Kyoto University, Kyoto, Japan
• OSTI ID: 5447026
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 21:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651723 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
651725* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION
BASIC INTERACTIONS
BINDING ENERGY
CADMIUM 111
CADMIUM 111 TARGET
CADMIUM ISOTOPES
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ENERGY
ENERGY LEVELS
EVEN-ODD NUCLEI
GAMMA SPECTRA
INTERACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETIC ENERGY
LEPTON REACTIONS
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
POSITRON REACTIONS
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS