Capture Cross Sections and Gamma-Ray Spectra from the Interaction of 0.5- to 3.0-MeV Neutrons with Nuclei in the Mass RangeA= 63 to 209

New ENDF/B-VII.0 evaluations of neutron cross sections for 32 fission products

“…Capture cross sections for 141 Pr are compared to recent libraries and measurements as shown in fall 4. Our results reproduce the experimental data [12][13][14][15][16][17][18] below and above the URR. Sm-isotopes (n,2n) Sm-isotopes (n,2n) Fig.…”

Measurement of gamma-rays from the keV-neutron capture by 139La

“…The derived capture γ-ray spectrum of 139 La at 550 keV is shown in figure 5, and compared with the result of Voignier et al [13] at 500 keV. Low lying states of the residual nucleus, 140 La, are shown in figure 5.…”

Evaluation of Neutron Capture Gamma-ray Spectra for 89Y, 93Nb, 127I, 133Cs, 141Pr, 197Au, natTl, and 209Bi

“…EGLO Present Fig. 16 Gamma spectra of 209 Bi(n,) compared to the result of the EGLO method and to the experimental data 9) …”

“…[7][8][9][10][11] The bumps shown at around 5.5 MeV were known as the pygmy resonance which has an origin from electric transitions. The theoretical descriptions for them have been given by the density vibration model 27) which is similar to the nuclear dipole vibration 28,29) or microscopic analysis.…”

“…The representative example is the anomalous bump shown in the experiments of the capture gamma-ray spectra. [7][8][9][10][11][12][13] According to a theoretical analysis and experiments, the bump could be considered to have the electric or magnetic properties of decaying gamma similar to the giant electric or magnetic resonances. So far, the bump has not been regarded as an essential nuclear property because it does not TECHNICAL MATERIAL affect significantly the capture cross sections, nor does it provide a sufficient enhancement of the high energy gammarays observed in the experiments.…”