Study of the isomeric ratio in (n, 2n) and (. gamma. , n) reactions in /sup 92/Mo, /sup 90/Zr, /sup 86/Sr, and /sup 74/Se
The method is developed for calculation of the isomeric ratio for the case of low excitation energy of the residual nucleus, and the isomeric ratio is measured in the (n, 2n) and (..gamma.., n) reactions in the neutron-deficient nuclei /sup 92/Mo, /sup 90/Zr, /sup 86/Sr, and /sup 74/Se. The good agreement between the experimental and theoretical results on the (..gamma.., n) reaction has confirmed the reliability of the characteristics of the residual nuclei, the transmission coefficients of the emitted neutrons, etc., used in the calculations. From study of the (n, 2n) reaction we have obtained values of the parameters of the spin dependence of the level density of the nucleus in the excitation-energy region approx.14 MeV.
- Research Organization:
- Nuclear Research Institute, Socialist Republic of Vietnam
- OSTI ID:
- 5016387
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 35:2
- Country of Publication:
- United States
- Language:
- English
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Activation cross section and isomeric cross-section ratio for the /sup 93/Nb(n,. cap alpha. )/sup 90/Y/sup m//sup ,//sup g/ process
The (n, 2n) excitation functions are given for Zn{sup 64}, Br{sup 79}, Ag{sup 107}, Sb{sup 121}, and Pr{sup 141}. Evidence is presented for a 7+ isomeric state in Y{sup 90} at 0. 685 MeV. Zr{sup 90} (n, p)Y{sup 90m} and Nb{sup 93}(n, a)Y{sup 9om}
Related Subjects
MOLYBDENUM 92
ENERGY-LEVEL DENSITY
ISOMERIC TRANSITIONS
MOLYBDENUM 92 TARGET
NEUTRON REACTIONS
PHOTONUCLEAR REACTIONS
KNOCK-OUT REACTIONS
SELENIUM 74
SELENIUM 74 TARGET
STRONTIUM 86
STRONTIUM 86 TARGET
ZIRCONIUM 90
ZIRCONIUM 90 TARGET
EXPERIMENTAL DATA
NEUTRONS
TRANSMISSION
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BARYONS
DATA
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
FERMIONS
HADRON REACTIONS
HADRONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MOLYBDENUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
RADIOISOTOPES
SELENIUM ISOTOPES
STABLE ISOTOPES
STRONTIUM ISOTOPES
TARGETS
ZIRCONIUM ISOTOPES
651623* - Nuclear Properties & Reactions
A=59-89
Experimental- Energy Levels & Transitions- (-1987)
651723 - Nuclear Properties & Reactions
A=90-149
Experimental- Energy Levels & Transitions- (-1987)
651625 - Nuclear Properties & Reactions
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Experimental- Nuclear Reactions & Scattering- (-1987)
651725 - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)