Abstract
We carried out the measurements of high resolution {alpha} emission spectra of {sup 58}Ni and {sup nat}Ni between 4.5 and 6.5 MeV, and {sup 12}C(n,x{alpha}) cross section using a 4{pi} gridded ionization chamber. In Ni measurement, overall energy resolution was improved to around 200 keV by optimizing a sample thickness and a neutron source width. Measured alpha spectra showed separate peaks corresponding to the ground and low-lying excited states of the residual nucleus ({sup 55}Fe). These results were compared with another direct measurement and statistical model calculations. In {sup 12}C measurement, GIC was applied for (n,x{alpha}) reactions of light nuclei. This application is difficult to (n,x{alpha}) cross sections of light nuclei, because of the influences of large recoil energy and multi-body break-up. We developed new methods which eliminate the effects of recoil nuclei and multi-body break-up and applied them to {sup 12}C(n,x{alpha}) reaction at En=14.1 MeV. In our experiment, the {sup 12}C(n,{alpha}{sub 0}){sup 9}Be angular differential cross section and {sup 12}C(n,n`3{alpha}) cross section were obtained. (author)
Sanami, Toshiya;
Baba, Mamoru;
Matsuyama, Shigeo;
Kiyosumi, Takehide;
Nauchi, Yasushi;
Saito, Keiichiro;
Hirakawa, Naohiro;
[1]
Kawano, Toshihiko
- Tohoku Univ., Sendai (Japan). Faculty of Engineering
Citation Formats
Sanami, Toshiya, Baba, Mamoru, Matsuyama, Shigeo, Kiyosumi, Takehide, Nauchi, Yasushi, Saito, Keiichiro, Hirakawa, Naohiro, and Kawano, Toshihiko.
Measurement of differential (n,x{alpha}) cross section using 4{pi} gridded ionization chamber.
Japan: N. p.,
1997.
Web.
Sanami, Toshiya, Baba, Mamoru, Matsuyama, Shigeo, Kiyosumi, Takehide, Nauchi, Yasushi, Saito, Keiichiro, Hirakawa, Naohiro, & Kawano, Toshihiko.
Measurement of differential (n,x{alpha}) cross section using 4{pi} gridded ionization chamber.
Japan.
Sanami, Toshiya, Baba, Mamoru, Matsuyama, Shigeo, Kiyosumi, Takehide, Nauchi, Yasushi, Saito, Keiichiro, Hirakawa, Naohiro, and Kawano, Toshihiko.
1997.
"Measurement of differential (n,x{alpha}) cross section using 4{pi} gridded ionization chamber."
Japan.
@misc{etde_530415,
title = {Measurement of differential (n,x{alpha}) cross section using 4{pi} gridded ionization chamber}
author = {Sanami, Toshiya, Baba, Mamoru, Matsuyama, Shigeo, Kiyosumi, Takehide, Nauchi, Yasushi, Saito, Keiichiro, Hirakawa, Naohiro, and Kawano, Toshihiko}
abstractNote = {We carried out the measurements of high resolution {alpha} emission spectra of {sup 58}Ni and {sup nat}Ni between 4.5 and 6.5 MeV, and {sup 12}C(n,x{alpha}) cross section using a 4{pi} gridded ionization chamber. In Ni measurement, overall energy resolution was improved to around 200 keV by optimizing a sample thickness and a neutron source width. Measured alpha spectra showed separate peaks corresponding to the ground and low-lying excited states of the residual nucleus ({sup 55}Fe). These results were compared with another direct measurement and statistical model calculations. In {sup 12}C measurement, GIC was applied for (n,x{alpha}) reactions of light nuclei. This application is difficult to (n,x{alpha}) cross sections of light nuclei, because of the influences of large recoil energy and multi-body break-up. We developed new methods which eliminate the effects of recoil nuclei and multi-body break-up and applied them to {sup 12}C(n,x{alpha}) reaction at En=14.1 MeV. In our experiment, the {sup 12}C(n,{alpha}{sub 0}){sup 9}Be angular differential cross section and {sup 12}C(n,n`3{alpha}) cross section were obtained. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}
title = {Measurement of differential (n,x{alpha}) cross section using 4{pi} gridded ionization chamber}
author = {Sanami, Toshiya, Baba, Mamoru, Matsuyama, Shigeo, Kiyosumi, Takehide, Nauchi, Yasushi, Saito, Keiichiro, Hirakawa, Naohiro, and Kawano, Toshihiko}
abstractNote = {We carried out the measurements of high resolution {alpha} emission spectra of {sup 58}Ni and {sup nat}Ni between 4.5 and 6.5 MeV, and {sup 12}C(n,x{alpha}) cross section using a 4{pi} gridded ionization chamber. In Ni measurement, overall energy resolution was improved to around 200 keV by optimizing a sample thickness and a neutron source width. Measured alpha spectra showed separate peaks corresponding to the ground and low-lying excited states of the residual nucleus ({sup 55}Fe). These results were compared with another direct measurement and statistical model calculations. In {sup 12}C measurement, GIC was applied for (n,x{alpha}) reactions of light nuclei. This application is difficult to (n,x{alpha}) cross sections of light nuclei, because of the influences of large recoil energy and multi-body break-up. We developed new methods which eliminate the effects of recoil nuclei and multi-body break-up and applied them to {sup 12}C(n,x{alpha}) reaction at En=14.1 MeV. In our experiment, the {sup 12}C(n,{alpha}{sub 0}){sup 9}Be angular differential cross section and {sup 12}C(n,n`3{alpha}) cross section were obtained. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}