Slow Neutron Resonances of Antimony

概要

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The total neutron cross section of natural antimony has been measured by the transmission method using the time-of-flight spectrometer of the JAERI linear accelerator with the maximum time resolution of 10 nsec/m. The resonance energies of about 100 levels below 1400 eV have been determined. The neutron widths of 47 levels below about 400 eV and the total widths of 11 levels out of those 47 levels have been obtained by the area analysis and the thick-thin method. The isotope assignments of resonances by others are utilized in the analyses. The average level spacings and the strength functions for the energy region below 350 eV are obtained to be <D>=7.5±0.5 eV and S=(0.26±0.06)×10^<-4> for natural Sb, <D>=11±1 eV and S_0=(0.23±0.07)×10^<-4> for ^<121>Sb, and <D>=25±3 eV and S_0=(0.28±0.1)×10^<-4> for ^<123>Sb, respectively.
社団法人日本物理学会の論文
1972-11-05