Abstract
A description of light heavy-ion fusion, taking into account both entrace-channel characteristics and compound-nucleus properties, is derived within a unified theory of nuclear reactions. The dependence of the imaginary fusion potential on the level density of the compound nucleus is revealed. The {sup 12}C+{sup 12}C, {sup 12}C+{sup 14}N, {sup 10}B+{sup 16}O and {sup 16}O+{sup 16}O fusion cross sections are calculated for E{sub cm}{<=}120 MeV and compared with experimental data. The excitation energy dependence of the level-density parameter of {sup 24}Mg, {sup 26}Al and {sup 32}S is inferred below 5 MeV/A. A realistic nuclear level-density model, describing the experimental level-density parameters of highly excited nuclei, is shown to be consistent with both the global features and details of the fusion cross section. {sup 12}C+{sup 12}C and {sup 16}O+{sup 16}O fusion cross section oscillations are predicted at large excitation energies, reflecting the structure of the level density of the highly excited light compound nuclei. Differences of the {sup 12}C+{sup 14}N and {sup 10}B+{sup 16}O fusion reaction mechanisms are discussed in terms of specific entrance-channel characteristics. (orig.)
Citation Formats
Zimmer, K W, and Rebel, H.
Towards a unified description of light ion fusion cross section excitation functions.
Germany: N. p.,
1994.
Web.
Zimmer, K W, & Rebel, H.
Towards a unified description of light ion fusion cross section excitation functions.
Germany.
Zimmer, K W, and Rebel, H.
1994.
"Towards a unified description of light ion fusion cross section excitation functions."
Germany.
@misc{etde_10128408,
title = {Towards a unified description of light ion fusion cross section excitation functions}
author = {Zimmer, K W, and Rebel, H}
abstractNote = {A description of light heavy-ion fusion, taking into account both entrace-channel characteristics and compound-nucleus properties, is derived within a unified theory of nuclear reactions. The dependence of the imaginary fusion potential on the level density of the compound nucleus is revealed. The {sup 12}C+{sup 12}C, {sup 12}C+{sup 14}N, {sup 10}B+{sup 16}O and {sup 16}O+{sup 16}O fusion cross sections are calculated for E{sub cm}{<=}120 MeV and compared with experimental data. The excitation energy dependence of the level-density parameter of {sup 24}Mg, {sup 26}Al and {sup 32}S is inferred below 5 MeV/A. A realistic nuclear level-density model, describing the experimental level-density parameters of highly excited nuclei, is shown to be consistent with both the global features and details of the fusion cross section. {sup 12}C+{sup 12}C and {sup 16}O+{sup 16}O fusion cross section oscillations are predicted at large excitation energies, reflecting the structure of the level density of the highly excited light compound nuclei. Differences of the {sup 12}C+{sup 14}N and {sup 10}B+{sup 16}O fusion reaction mechanisms are discussed in terms of specific entrance-channel characteristics. (orig.)}
place = {Germany}
year = {1994}
month = {Oct}
}
title = {Towards a unified description of light ion fusion cross section excitation functions}
author = {Zimmer, K W, and Rebel, H}
abstractNote = {A description of light heavy-ion fusion, taking into account both entrace-channel characteristics and compound-nucleus properties, is derived within a unified theory of nuclear reactions. The dependence of the imaginary fusion potential on the level density of the compound nucleus is revealed. The {sup 12}C+{sup 12}C, {sup 12}C+{sup 14}N, {sup 10}B+{sup 16}O and {sup 16}O+{sup 16}O fusion cross sections are calculated for E{sub cm}{<=}120 MeV and compared with experimental data. The excitation energy dependence of the level-density parameter of {sup 24}Mg, {sup 26}Al and {sup 32}S is inferred below 5 MeV/A. A realistic nuclear level-density model, describing the experimental level-density parameters of highly excited nuclei, is shown to be consistent with both the global features and details of the fusion cross section. {sup 12}C+{sup 12}C and {sup 16}O+{sup 16}O fusion cross section oscillations are predicted at large excitation energies, reflecting the structure of the level density of the highly excited light compound nuclei. Differences of the {sup 12}C+{sup 14}N and {sup 10}B+{sup 16}O fusion reaction mechanisms are discussed in terms of specific entrance-channel characteristics. (orig.)}
place = {Germany}
year = {1994}
month = {Oct}
}