Effect of neutron skin thickness on projectile fragmentation

Dai, ZT; Fang, DQ; Ma, Yugang; Cao, X. G.; Zhang, GQ; Shen, W. Q.

doi:10.1103/physrevc.91.034618

Cited by 15 publications

(7 citation statements)

References 56 publications

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“…The proton and neutron density distributions for the initial projectile and target nuclei are taken from the droplet model. By adjusting the diffuseness parameter of neutron density in the droplet model for projectile, we can get different skin size in density distributions [20,22,27,63],…”

Section: A Brief Review Of Iqmd Modelmentioning

confidence: 99%

“…Ref. [27] also investigated the sensitivities of isoscaling behavior and mean N/Z [N (Z) is neutron (proton) number] for projectilelike fragments (PLFs) to neutron skin size and find that both them have a linear dependence on neutron skin thickness. However, compared with nucleons, light fragments and projectile-like fragments produced in the reaction, hard photons have a considerable advantage not being disturbed by the final-state interactions.…”

Section: Introductionmentioning

confidence: 99%

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Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile $^{50}$Ca

Wang,

Ma,

Fang

et al. 2022

Preprint

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Direct hard photon emissions from incoherent proton-neutron bremsstrahlung in the collisions of neutron-rich projectile 50 Ca with 12 C and 40 Ca targets are simulated in the framework of IQMD model, respectively. By adjusting the diffuseness parameter of neutron density in the droplet model to obtain different neutron skin thickness for 50 Ca, the effects of neutron skin thickness on direct hard photon emission are investigated via several probes. The results show that more direct hard photons are produced with the increasing of the neutron skin thickness. Meanwhile, we find that yield ratio Rcp(σγ) and the rapidity dependence of multiplicity and multiplicity ratio Rcp(Nγ) for direct hard photons are apparently sensitive to neutron skin thickness. Furthermore, the direct hard photon differential and relative flows between central and peripheral collision are presented. We find that the differential flow is slightly more sensitive to neutron skin thickness than the relative flow. It is suggested that direct hard photon emission may be used as an experimental observable to extract the information of neutron skin thickness.

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Section: A Brief Review Of Iqmd Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile $^{50}$Ca

Wang,

Ma,

Fang

et al. 2022

Preprint

Self Cite

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“…The proton distributions of nuclei can precisely be determined by the elastic scattering of electrons. For the neutron distribution different tools like dipole polarizability studies [15,16], pion photoproduction [17], hadronic scattering and reactions [18] and parity-violating electron scattering [19] are available. In Ref.…”

Section: Sampling the Neutron Skinmentioning

confidence: 99%

Many Facets of Strangeness Nuclear Physics with Stored Antiprotons

Pochodzalla¹,

Bleser²,

Lorente³

et al. 2017

Proceedings of the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015)

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Stored antiprotons beams in the GeV range represent a unparalleled factory for hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of strange hadronic systems with unprecedented precision. The behavior of hyperons and -for the first time -of antihyperons in nuclear systems can be studied under well controlled conditions. The exclusive production of ΛΛ and Σ − Λ pairs in antiproton-nucleus interactions probe the neutron and proton distribution in the nuclear periphery and will help to sample the neutron skin. For the first time, high resolution γ-spectroscopy of doubly strange nuclei will be performed, thus complementing measurements of ground state decays of double hypernuclei with mesons beams at J-PARC or possible decays of particle unstable hypernuclei in heavy ion reactions. High resolution spectroscopy of multistrange Ξ-atoms are feasible and even the production of Ω − -atoms will be within reach. The latter might open the door to the |s|=3 world in strangeness nuclear physics, by the study of the hadronic Ω − -nucleus interaction and the very first measurement of a spectroscopic quadrupole moment of a baryon which will be a benchmark test for our understanding of hadron structure.

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“…The projectile fragmentation reaction, which is the main experimental approach for studying rare isotopes, is suitable for determining the neutron skin thickness owing to the obvious experimental phenomena induced by the neutron skin structure [9,10]. For example, isospin effects in the isotopic cross section [11], neutron-abrasion cross section (σ nabr ) [12], neutron removal cross section [13], mirror nuclei ratio or isobaric ratio [14], and isoscaling parameter (α) [15]. Parityviolating electron scattering (PVS) is the only method used to determine neutron skin thickness that is model-independent.…”

Section: Introductionmentioning

confidence: 99%

Determination of neutron-skin thickness using configurational information entropy

Ma,

Liu,

Wei

et al. 2022

Preprint

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Configurational information entropy (CIE) theory was employed to determine the neutron skin thickness of neutron-rich calcium isotopes. The nuclear density distributions and fragment cross-sections in 350 MeV/u 40−60 Ca + 9 Be projectile fragmentation reactions were calculated using a modified statistical abrasion-ablation model. CIE quantities were determined from the nuclear density, isotopic, mass, and charge distributions. The linear correlations between the CIE determined using the isotopic, mass, and charge distributions and the neutron skin thickness of the projectile nucleus show that CIE provides new methods to extract the neutron skin thickness of neutron-rich nuclei.

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Effect of neutron skin thickness on projectile fragmentation

Cited by 15 publications

References 56 publications

Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile $^{50}$Ca

Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile $^{50}$Ca

Many Facets of Strangeness Nuclear Physics with Stored Antiprotons

Determination of neutron-skin thickness using configurational information entropy

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