Abstract
Using the corpus of data on the ({gamma},p), ({gamma},n), ({gamma},2n) and ({gamma},n{sub 0}) cross sections of nine light nuclei ({sup 13}C, {sup 14}C, {sup 15}N, {sup 17}O, {sup 18}O, {sup 25}Mg, {sup 26}Mg, {sup 29}Si and {sup 30}Si) obtained largely by the authors and their colleagues over the last decade, the T> and T< isospin components of the giant dipole resonance (GDR) have been separated. The relative strengths of these components have been extracted, together with the energy differences between the centroids of the components. The ratio of the T> energy weighted integrated cross section to the total cross section is somewhat better represented by the simple geometric factor 1/(T{sub 0}+1), where T{sub 0} is the isospin of the ground state of the excited nucleus, than by the more complete expression derived by Hayward et al. which takes into account dynamical effects. If the energy difference between the centroids is represented by U (T{sub 0}+1)/A, the average value of U for the three p shell nuclei is found to be 57 MeV, while that for the six s,d shell nuclei is 93 MeV. 56 refs., 13 tabs., 12 figs.
McNeill, K G;
[1]
Thompson, M N;
Bates, A D;
[2]
Jury, J W;
[3]
Berman, B L
[4]
- Toronto Univ., ON (Canada). Dept. of Physics
- Melbourne Univ., Parkville, VIC (Australia). School of Physics
- Trent Univ., Peterborough, ON (Canada). Dept. of Physics
- George Washington Univ., Washington, DC (United States). Center for Nuclear Studies
Citation Formats
McNeill, K G, Thompson, M N, Bates, A D, Jury, J W, and Berman, B L.
Isospin effects in the photodisintegration of light nuclei.
Australia: N. p.,
1992.
Web.
McNeill, K G, Thompson, M N, Bates, A D, Jury, J W, & Berman, B L.
Isospin effects in the photodisintegration of light nuclei.
Australia.
McNeill, K G, Thompson, M N, Bates, A D, Jury, J W, and Berman, B L.
1992.
"Isospin effects in the photodisintegration of light nuclei."
Australia.
@misc{etde_10144830,
title = {Isospin effects in the photodisintegration of light nuclei}
author = {McNeill, K G, Thompson, M N, Bates, A D, Jury, J W, and Berman, B L}
abstractNote = {Using the corpus of data on the ({gamma},p), ({gamma},n), ({gamma},2n) and ({gamma},n{sub 0}) cross sections of nine light nuclei ({sup 13}C, {sup 14}C, {sup 15}N, {sup 17}O, {sup 18}O, {sup 25}Mg, {sup 26}Mg, {sup 29}Si and {sup 30}Si) obtained largely by the authors and their colleagues over the last decade, the T> and T< isospin components of the giant dipole resonance (GDR) have been separated. The relative strengths of these components have been extracted, together with the energy differences between the centroids of the components. The ratio of the T> energy weighted integrated cross section to the total cross section is somewhat better represented by the simple geometric factor 1/(T{sub 0}+1), where T{sub 0} is the isospin of the ground state of the excited nucleus, than by the more complete expression derived by Hayward et al. which takes into account dynamical effects. If the energy difference between the centroids is represented by U (T{sub 0}+1)/A, the average value of U for the three p shell nuclei is found to be 57 MeV, while that for the six s,d shell nuclei is 93 MeV. 56 refs., 13 tabs., 12 figs.}
place = {Australia}
year = {1992}
month = {Dec}
}
title = {Isospin effects in the photodisintegration of light nuclei}
author = {McNeill, K G, Thompson, M N, Bates, A D, Jury, J W, and Berman, B L}
abstractNote = {Using the corpus of data on the ({gamma},p), ({gamma},n), ({gamma},2n) and ({gamma},n{sub 0}) cross sections of nine light nuclei ({sup 13}C, {sup 14}C, {sup 15}N, {sup 17}O, {sup 18}O, {sup 25}Mg, {sup 26}Mg, {sup 29}Si and {sup 30}Si) obtained largely by the authors and their colleagues over the last decade, the T> and T< isospin components of the giant dipole resonance (GDR) have been separated. The relative strengths of these components have been extracted, together with the energy differences between the centroids of the components. The ratio of the T> energy weighted integrated cross section to the total cross section is somewhat better represented by the simple geometric factor 1/(T{sub 0}+1), where T{sub 0} is the isospin of the ground state of the excited nucleus, than by the more complete expression derived by Hayward et al. which takes into account dynamical effects. If the energy difference between the centroids is represented by U (T{sub 0}+1)/A, the average value of U for the three p shell nuclei is found to be 57 MeV, while that for the six s,d shell nuclei is 93 MeV. 56 refs., 13 tabs., 12 figs.}
place = {Australia}
year = {1992}
month = {Dec}
}