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Title: Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei

Abstract

The Skyrme energy-density functional approach has been extended to study massive heavy-ion fusion reactions. Based on the potential barrier obtained and the parametrized barrier distribution the fusion (capture) excitation functions of a lot of heavy-ion fusion reactions are studied systematically. The average deviations of fusion cross sections at energies near and above the barriers from experimental data are less than 0.05 for 92% of 76 fusion reactions with Z{sub 1}Z{sub 2}<1200. For the massive fusion reactions, for example, the {sup 238}U-induced reactions and {sup 48}Ca+{sup 208}Pb, the capture excitation functions have been reproduced remarkably well. The influence of structure effects in the reaction partners on the capture cross sections is studied with our parametrized barrier distribution. By comparing the reactions induced by double-magic nucleus {sup 48}Ca and by {sup 32}S and {sup 35}Cl, the ''threshold-like'' behavior in the capture excitation function for {sup 48}Ca-induced reactions is explored and an optimal balance between the capture cross section and the excitation energy of the compound nucleus is studied. Finally, the fusion reactions with {sup 36}S, {sup 37}Cl, {sup 48}Ca, and {sup 50}Ti bombarding {sup 248}Cm, {sup 247,249}Bk, {sup 250,252,254}Cf, and {sup 252,254}Es, as well as the reactions leading to the same compoundmore » nucleus with Z=120 and N=182, are studied further. The calculation results for these reactions are useful for searching for the optimal fusion configuration and suitable incident energy in the synthesis of superheavy nuclei.« less

Authors:
;  [1]; ;  [2];  [2]
  1. Institute for Theoretical Physics at Justus-Liebig-University, D-35392 Giessen (Germany)
  2. China Institute of Atomic Energy, Beijing 102413 (China)
Publication Date:
OSTI Identifier:
20863862
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 74; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.74.044604; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BERKELIUM 249; CALCIUM 48; CALIFORNIUM 254; CAPTURE; CHLORINE 35; CHLORINE 37; COMPOUND NUCLEI; CURIUM 248; DISTRIBUTION; EINSTEINIUM 254; ENERGY DENSITY; EXCITATION; EXCITATION FUNCTIONS; HEAVY ION FUSION REACTIONS; LEAD 208; MAGIC NUCLEI; SKYRME POTENTIAL; TITANIUM 50; URANIUM 238

Citation Formats

Ning, Wang, Scheid, Werner, Xizhen, Wu, Min, Liu, Zhuxia, Li, Institute of Theoretical Physics, Chinese Academic of Science, Beijing 100080, and Nuclear Theory Center of National Laboratory of Heavy Ion Accelerator, Lanzhou 730000. Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.044604.
Ning, Wang, Scheid, Werner, Xizhen, Wu, Min, Liu, Zhuxia, Li, Institute of Theoretical Physics, Chinese Academic of Science, Beijing 100080, & Nuclear Theory Center of National Laboratory of Heavy Ion Accelerator, Lanzhou 730000. Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei. United States. https://doi.org/10.1103/PHYSREVC.74.044604
Ning, Wang, Scheid, Werner, Xizhen, Wu, Min, Liu, Zhuxia, Li, Institute of Theoretical Physics, Chinese Academic of Science, Beijing 100080, and Nuclear Theory Center of National Laboratory of Heavy Ion Accelerator, Lanzhou 730000. 2006. "Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei". United States. https://doi.org/10.1103/PHYSREVC.74.044604.
@article{osti_20863862,
title = {Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei},
author = {Ning, Wang and Scheid, Werner and Xizhen, Wu and Min, Liu and Zhuxia, Li and Institute of Theoretical Physics, Chinese Academic of Science, Beijing 100080 and Nuclear Theory Center of National Laboratory of Heavy Ion Accelerator, Lanzhou 730000},
abstractNote = {The Skyrme energy-density functional approach has been extended to study massive heavy-ion fusion reactions. Based on the potential barrier obtained and the parametrized barrier distribution the fusion (capture) excitation functions of a lot of heavy-ion fusion reactions are studied systematically. The average deviations of fusion cross sections at energies near and above the barriers from experimental data are less than 0.05 for 92% of 76 fusion reactions with Z{sub 1}Z{sub 2}<1200. For the massive fusion reactions, for example, the {sup 238}U-induced reactions and {sup 48}Ca+{sup 208}Pb, the capture excitation functions have been reproduced remarkably well. The influence of structure effects in the reaction partners on the capture cross sections is studied with our parametrized barrier distribution. By comparing the reactions induced by double-magic nucleus {sup 48}Ca and by {sup 32}S and {sup 35}Cl, the ''threshold-like'' behavior in the capture excitation function for {sup 48}Ca-induced reactions is explored and an optimal balance between the capture cross section and the excitation energy of the compound nucleus is studied. Finally, the fusion reactions with {sup 36}S, {sup 37}Cl, {sup 48}Ca, and {sup 50}Ti bombarding {sup 248}Cm, {sup 247,249}Bk, {sup 250,252,254}Cf, and {sup 252,254}Es, as well as the reactions leading to the same compound nucleus with Z=120 and N=182, are studied further. The calculation results for these reactions are useful for searching for the optimal fusion configuration and suitable incident energy in the synthesis of superheavy nuclei.},
doi = {10.1103/PHYSREVC.74.044604},
url = {https://www.osti.gov/biblio/20863862}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 4,
volume = 74,
place = {United States},
year = {Sun Oct 15 00:00:00 EDT 2006},
month = {Sun Oct 15 00:00:00 EDT 2006}
}