Production of the (I = 19/2) high-spin isomer {sup 135}Cs in photonuclear reactions

Journal Article · Wed Sep 15 04:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810090012· OSTI ID:21426678

Gangrsky, Yu P; Zhemenik, V I ^[1]; Kolesnikov, N N; Lukashik, V G ^[2]; Markov, B N; Myshinskiy, G V; Maslov, O D; Bozhikov, G A ^[1]

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1. Joint Institute for Nuclear Research (Russian Federation)
2. Moscow State University (Russian Federation)

The yields of {sup 135}Cs nuclei in a high-spin (19/2) isomeric state and of nuclei neighboring it were measured for photonuclear reactions of the ({gamma}, f) and ({gamma}, {alpha}) types. The experiments in question were performed by using bremsstrahlung from a microtron at the maximum electron energy of 25 MeV. The product nuclei were identified by their half-lives and by the lines of gamma radiation emitted in their decay, and the reaction yields R were determined by the ratios of the intensities of these lines to the bremsstrahlung flux. The cross sections for isomer production were calculated, and the angular momenta of product nuclei immediately before the cascade of gamma transitions populating the ground or an isomeric nuclear state were evaluated on the basis of these results. An enhanced yield of the high-spin isomer of {sup 135}Cs in the fission reaction in relation to the respective ({gamma}, {alpha}) reaction and in relation to the results of the calculations is found.

• OSTI ID: 21426678
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 9 Vol. 73; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BREMSSTRAHLUNG
CESIUM 135
CESIUM ISOTOPES
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FISSION
GAMMA RADIATION
HALF-LIFE
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOMERS
ISOTOPES
LEPTONS
MEV RANGE
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
PHOTONUCLEAR REACTIONS
RADIATIONS
RADIOISOTOPES
SPIN
YEARS LIVING RADIOISOTOPES
YIELDS