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Belov, A.G.; Gangrskij, Yu.P.; Mel'nikova, L.M.; Ponomarev, V.Yu.; Tsoneva, N.; Stoyanov, Ch.; Tonchev, A.; Balabanov, N.
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russian Federation); Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation)2000
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russian Federation); Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation)2000
AbstractAbstract
[en] The isomeric ratios (IR) for the isomers with Iπ=11/2- in the isotones with N=81 (135Xe, 137Ba, 139Ce, 141Nd and 143Sm) were measured in the reactions (n, γ), (γ, n) and β-decay. The activation method was used for the reaction yields determination. The noticeable difference of IR was observed in the isotones with different Z but in the same reactions. The calculations within the quasiparticle phonon model were performed. The good agreement of the experimental and calculated IR was obtained for all isotones. The IR dependence on Z was explained by the different reaction energy.This difference is realized in different excitation probability of the activation level, populating the isomeric state. (author)
Original Title
Vozbuzhdenie izomernykh sostoyanij 1h11/2 v yadernykh reaktsiyakh s γ-kvantami, nejtronami i pri β-raspade
Primary Subject
Source
2000; 18 p; 33 refs., 2 tabs., 2 figs. Submitted to the journal, Yadernaya Fizika
Record Type
Report
Literature Type
Numerical Data
Report Number
Country of publication
BARIUM 137, BETA-PLUS DECAY, CAPTURE, CESIUM 139, DATA ANALYSIS, E1-TRANSITIONS, E2-TRANSITIONS, ENERGY SPECTRA, EXCITED STATES, EXPERIMENTAL DATA, GAMMA CASCADES, GIANT RESONANCE, GROUND STATES, HALF-LIFE, INTERNAL CONVERSION, ISOMER RATIO, KEV RANGE 100-1000, LEVEL WIDTHS, NEODYMIUM 141, NEUTRON REACTIONS, PHOTONS, PHOTONUCLEAR REACTIONS, QUASIPARTICLE-PHONON MODEL, SAMARIUM 143, STATISTICAL MODELS, THERMAL NEUTRONS, XENON 135
ALKALINE EARTH ISOTOPES, BARIUM ISOTOPES, BARYON REACTIONS, BARYONS, BETA DECAY, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, BOSONS, CESIUM ISOTOPES, CONVERSION, DATA, DECAY, ELECTRON CAPTURE RADIOISOTOPES, ELEMENTARY PARTICLES, ENERGY LEVELS, ENERGY RANGE, ENERGY-LEVEL TRANSITIONS, EVEN-ODD NUCLEI, FERMIONS, HADRON REACTIONS, HADRONS, HOURS LIVING RADIOISOTOPES, INFORMATION, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, KEV RANGE, MASSLESS PARTICLES, MATHEMATICAL MODELS, MINUTES LIVING RADIOISOTOPES, MULTIPOLE TRANSITIONS, NEODYMIUM ISOTOPES, NEUTRONS, NUCLEAR CASCADES, NUCLEAR DECAY, NUCLEAR MODELS, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, NUCLEONS, NUMERICAL DATA, ODD-EVEN NUCLEI, RADIOISOTOPES, RARE EARTH NUCLEI, RESONANCE, SAMARIUM ISOTOPES, SPECTRA, STABLE ISOTOPES, XENON ISOTOPES
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