Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies

Fusion excitation functions at energies above the fusion barrier for 12−15C + 12C are examined. From these excitation functions the average fusion cross-section, <σF>, is calculated. For this isotopic chain, the measured dependence of <σF> on neutron excess is compared with static barrie...

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Main Authors:	R.T. deSouza, Varinderjit Singh, S. Hudan, Z. Lin, C.J. Horowitz
Format:	Article
Language:	English
Published:	Elsevier 2021-03-01
Series:	Physics Letters B
Subjects:	Near-barrier fusion Neutron-rich fusion RIB fusion Fusion enhancement
Online Access:	http://www.sciencedirect.com/science/article/pii/S0370269321000551

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spelling	doaj-1aaf5e16fbed4689aea15593b6ed1c7d2021-02-25T04:16:54ZengElsevierPhysics Letters B0370-26932021-03-01814136115Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energiesR.T. deSouza0Varinderjit Singh1S. Hudan2Z. Lin3C.J. Horowitz4Department of Chemistry and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, USA; Corresponding author.Department of Chemistry and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, USADepartment of Chemistry and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, USADepartment of Physics and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, USA; Department of Physics, Arizona State University, 450 E. Tyler Mall, Tempe, AZ 85287-1504, USADepartment of Physics and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, USAFusion excitation functions at energies above the fusion barrier for 12−15C + 12C are examined. From these excitation functions the average fusion cross-section, <σF>, is calculated. For this isotopic chain, the measured dependence of <σF> on neutron excess is compared with static barrier penetration models. The more rapid increase observed for the experimental cross-sections above the geometric increase predicted by the static models suggests that the stronger dependence on neutron-excess measured may be attributable to dynamics. Calculations with a time-dependent Hartree-Fock model also fail to describe the observed trend suggesting that for neutron-rich nuclei, neutron dynamics may play a larger role than is presently accounted for.http://www.sciencedirect.com/science/article/pii/S0370269321000551Near-barrier fusionNeutron-rich fusionRIB fusionFusion enhancement
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	R.T. deSouza Varinderjit Singh S. Hudan Z. Lin C.J. Horowitz
spellingShingle	R.T. deSouza Varinderjit Singh S. Hudan Z. Lin C.J. Horowitz Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies Physics Letters B Near-barrier fusion Neutron-rich fusion RIB fusion Fusion enhancement
author_facet	R.T. deSouza Varinderjit Singh S. Hudan Z. Lin C.J. Horowitz
author_sort	R.T. deSouza
title	Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies
title_short	Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies
title_full	Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies
title_fullStr	Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies
title_full_unstemmed	Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies
title_sort	effect of increasing neutron-excess on the fusion cross-section in 12−15c + 12c at above-barrier energies
publisher	Elsevier
series	Physics Letters B
issn	0370-2693
publishDate	2021-03-01
description	Fusion excitation functions at energies above the fusion barrier for 12−15C + 12C are examined. From these excitation functions the average fusion cross-section, <σF>, is calculated. For this isotopic chain, the measured dependence of <σF> on neutron excess is compared with static barrier penetration models. The more rapid increase observed for the experimental cross-sections above the geometric increase predicted by the static models suggests that the stronger dependence on neutron-excess measured may be attributable to dynamics. Calculations with a time-dependent Hartree-Fock model also fail to describe the observed trend suggesting that for neutron-rich nuclei, neutron dynamics may play a larger role than is presently accounted for.
topic	Near-barrier fusion Neutron-rich fusion RIB fusion Fusion enhancement
url	http://www.sciencedirect.com/science/article/pii/S0370269321000551
work_keys_str_mv	AT rtdesouza effectofincreasingneutronexcessonthefusioncrosssectionin1215c12catabovebarrierenergies AT varinderjitsingh effectofincreasingneutronexcessonthefusioncrosssectionin1215c12catabovebarrierenergies AT shudan effectofincreasingneutronexcessonthefusioncrosssectionin1215c12catabovebarrierenergies AT zlin effectofincreasingneutronexcessonthefusioncrosssectionin1215c12catabovebarrierenergies AT cjhorowitz effectofincreasingneutronexcessonthefusioncrosssectionin1215c12catabovebarrierenergies
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Effect of increasing neutron-excess on the fusion cross-section in 12−15C + 12C at above-barrier energies

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