论文信息 - Neutron scattering cross sections up to 2. 4 MeV for the ground and first two excited states of /sup 232/Th

Neutron scattering cross sections up to 2. 4 MeV for the ground and first two excited states of /sup 232/Th

Differential cross sections have been measured at the University of Lowell for the ground and first two excited states of /sup 232/Th via the neutron time-of-flight technique. The following results are presented for neutron scattering cross sections: (a) excitation functions of /sup 232/Th in the incident energy range from 185 to 2400 keV for the 0/sup +/ ground state and the 2/sup +/, 49-keV state, and in the 480- to 2400-keV range for the 4/sup +/, 162-keV state; (b) angular distributions for the 0/sup +/ and 2/sup +/ states at 185 kev and for the 0/sup +/, 2/sup +/, and 4/sup +/ states at 550 keV. Level cross sections were obtained using these and previously measured angular distributions.

[1] Taro Tamura,et al. ANALYSES OF THE SCATTERING OF NUCLEAR PARTICLES BY COLLECTIVE NUCLEI IN TERMS OF THE COUPLED-CHANNEL CALCULATION , 1965 .

[2] J. W. Tepel,et al. Direct reactions and Hauser--Feshbach theory , 1975 .

[3] R. C. Lloyd,et al. CRITICALITY OF PLUTONIUM NITRATE SOLUTION CONTAINING SOLUBLE GADOLINIUM. , 1972 .

[4] B. K. Barnes,et al. Neutron Scattering Cross Sections of Uranium-238 , 1979 .

[5] Herman Feshbach,et al. The Inelastic Scattering of Neutrons , 1952 .

[6] Y. Patin,et al. Neutron Scattering Cross Sections for 232 Th, 233 U, 235 U, 238 U, 239 Pu, and 242 PU Between 0.6 and 3.4 MeV , 1982 .

[7] M. Walt,et al. SCATTERING OF 1-MEV NEUTRONS BY INTERMEDIATE AND HEAVY ELEMENTS , 1954 .

[8] E. Sheldon,et al. Analyses of fast neutron inelastic scattering cross sections to higher (vibrational) states of Th 232 and U 238 . II. Intrinsic unified formalism , 1982 .

[9] E. Sheldon,et al. Computation of total and differential cross section for compound nuclear reactions of the type (a, a), (a, a'), (a, b), (a, γ), (a, γ-γ), (a, bγ) and (a, bγ-γ) , 1973 .

[10] Alan B. Smith. Elastic and Inelastic Scattering of Fast Neutrons fromTh232 , 1962 .

[11] W. B. Gilboy,et al. Neutron interactions with U238 and Th232 in the energy region 1.6 MeV to 7 MeV , 1965 .