Interplay of short-range correlations and nuclear symmetry energy in hard-photon production from heavy-ion reactions at Fermi energies

doi:10.1103/PhysRevC.96.064614

	Interplay of short-range correlations and nuclear symmetry energy in hard-photon production from heavy-ion reactions at Fermi energies
	Yong, Gao-Chan1 ; Li, Bao-An 2
刊名	PHYSICAL REVIEW C
	2017-12-21
卷号	96 页码:8
ISSN号	2469-9985
DOI	10.1103/PhysRevC.96.064614
英文摘要	Within an isospin-and momentum-dependent transport model for nuclear reactions at intermediate energies, we investigate the interplay of the nucleon-nucleon short-range correlations (SRCs) and nuclear symmetry energy E-sym(rho) on hard-photon spectra in collisions of several Ca isotopes on Sn-112 and Sn-124 targets at a beam energy of 45 MeV/nucleon. It is found that over the whole spectra of hard photons studied, effects of the SRCs overwhelm those owing to the E-sym(rho). The energetic photons come mostly from the high-momentum tails (HMTs) of single-nucleon momentum distributions in the target and projectile. Within the neutron-proton dominance model of SRCs based on the consideration that the tensor force acts mostly in the isosinglet and spin-triplet nucleon-nucleon interaction channel, there are equal numbers of neutrons and protons, thus a zero isospin asymmetry in the HMTs. Therefore, experimental measurements of the energetic photons from heavy-ion collisions at Fermi energies have the great potential to help us better understand the nature of SRCs without any appreciable influence by the uncertain E-sym(rho). These measurements will be complementary to but also have some advantages over the ongoing and planned experiments using hadronic messengers from reactions induced by high-energy electrons or protons. Because the underlying physics of SRCs and E-sym(rho) are closely correlated, a better understanding of the SRCs will, in turn, help constrain the nuclear symmetry energy more precisely in a broad density range.
资助项目	National Natural Science Foundation of China[11375239] ; National Natural Science Foundation of China[11775275] ; National Natural Science Foundation of China[11435014] ; National Natural Science Foundation of China[11320101004] ; U.S. Department of Energy[DE-SC0013702] ; CUSTIPEN (China-U.S. Theory Institute for Physics with Exotic Nuclei) under U.S. Department of Energy[DE-SC0009971]
WOS关键词	NEUTRON-PROTON BREMSSTRAHLUNG ; MOMENTUM DISTRIBUTION ; ISOSPIN PHYSICS ; GROUND-STATE ; RICH NUCLEI ; GAMMA-RAYS ; COLLISIONS ; MATTER ; EMISSION ; PROBE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000418573800003
资助机构	National Natural Science Foundation of China ; U.S. Department of Energy ; CUSTIPEN (China-U.S. Theory Institute for Physics with Exotic Nuclei) under U.S. Department of Energy
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46136]
专题	近代物理研究所_理论物理研究室
通讯作者	Yong, Gao-Chan
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Texas A&M Univ Commerce, Dept Phys & Astron, Commerce, TX 75429 USA
推荐引用方式 GB/T 7714	Yong, Gao-Chan,Li, Bao-An. Interplay of short-range correlations and nuclear symmetry energy in hard-photon production from heavy-ion reactions at Fermi energies[J]. PHYSICAL REVIEW C,2017,96:8.
APA	Yong, Gao-Chan,&Li, Bao-An.(2017).Interplay of short-range correlations and nuclear symmetry energy in hard-photon production from heavy-ion reactions at Fermi energies.PHYSICAL REVIEW C,96,8.
MLA	Yong, Gao-Chan,et al."Interplay of short-range correlations and nuclear symmetry energy in hard-photon production from heavy-ion reactions at Fermi energies".PHYSICAL REVIEW C 96(2017):8.