Temperature and density effects on the two-nucleon momentum correlation function from excited single nuclei

Abstract

Two-nucleon momentum correlation functions are investigated for different single thermal sources at given initial temperature $(T)$ and density $(\rho )$. To this end, the space-time evolutions of various single excited nuclei at $T$ $=1-20$ $MeV$ and $\rho$ = 0.2 - 1.2 ${\rho }_0$ are simulated by using the thermal isospin-dependent quantum molecular dynamics $(ThIQMD)$ model. Momentum correlation functions of identical proton-pairs ($C_{pp}(q)$) or neutron-pairs ($C_{nn}(q)$) at small relative momenta are calculated by $Lednick\acute{y}$ and $Lyuboshitz$ analytical method. The results illustrate that $C_{pp}(q)$ and $C_{nn}(q)$ are sensitive to the source size ($A$) at lower $T$ or higher $\rho$, but almost not at higher $T$ or lower $\rho$. And the sensitivities become stronger for smaller source. Moreover, the $T$, $\rho$ and $A$ dependencies of the Gaussian source radii are also extracted by fitting the two-proton momentum correlation functions, and the results are consistent with the above conclusions.

arXiv comment9 pages, 9 figures

References in corpus (43)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Particle Interferometry for Relativistic Heavy-Ion Collisions
• Nuclear multifragmentation and phase transition for hot nuclei
• Limiting temperatures and the Equation of State of Nuclear Matter
• Application of Information Theory in Nuclear Liquid Gas Phase Transition
• Measurement of interaction between antiprotons
• Shannon Information Entropy in Heavy-ion Collisions
• Critical Behavior in Light Nuclear Systems: Experimental Aspects
• Finite-size effect on two-particle production in continuous and discrete spectrum
• The many facets of the (non relativistic) Nuclear Equation of State
• Effect of symmetry energy on two-nucleon correlation functions in heavy-ion collisions induced by neutron-rich nuclei
• Nuclear dynamics and particle production near threshold energies in heavy-ion collisions
• Liquid-Gas phase transition in nuclei
• Imaging Sources with Fast and Slow Emission Components
• Surveying the Nucleon-Nucleon Momentum Correlation Function in the Framework of Quantum Molecular Dynamics Model
• Nuclear liquid-gas phase transition with machine learning
• Correlations and Characterization of Emitting Sources
• Correlation femtoscopy
• Determining the temperature in heavy-ion collisions with multiplicity distribution
• The shear viscosity to entropy density ratio in finite nuclei
• Emission time scale of light particles in the system Xe+Sn at 50 AMeV. A probe for dynamical emission ?
• Two-proton small-angle correlations in central heavy-ion collisions: a beam-energy and system-size dependent study
• Proton-proton correlations in distinguishing the two-proton emission mechanism of ${}^{23}$Al and ${}^{22}$Mg
• Nucleon-nucleon momentum correlation function as a probe of the density distribution of valence neutron in neutron-rich nucleus
• Exploring binding energy and separation energy dependences of HBT strength
• Shear viscosity of hot nuclear matter by the mean free path method
• Experimental Determination of $\eta$/$s$ for Finite Nuclear Matter
• Shear-Viscosity to Entropy-Density Ratio from Giant Dipole Resonances in Hot Nuclei
• Isospin effects on two-particle correlation functions in E/A = 61 MeV 36Ar + 112,124Sn reactions
• Clustering structure effect on Hanbury-Brown-Twiss correlation in ${}^{12}$C + ${}^{197}$Au collisions at 200 GeV}
• Scaling of anisotropy flows in intermediate energy heavy ion collisions
• Two-proton momentum correlation from photondisintegration of $\alpha$-clustering light nuclei in the quasi-deuteron region
• Constraining isovector nuclear interactions with giant dipole resonance and neutron skin in ${}^{208}$Pb from a Bayesian approach
• Thermal and transport properties in central heavy-ion reactions around a few hundred MeV/nucleon
• Finite-size scaling phenomenon of nuclear liquid--gas phase transition probes
• Effect of in-medium nucleon-nucleon cross section on proton-proton momentum correlation in intermediate energy heavy-ion collision
• Short range correlations in the extended quantum molecular dynamics model
• Femtoscopic correlations in multiparticle production and beta-decay
• From finite nuclei to neutron stars : the essential role of high-order density dependence in effective forces
• Examination of an isospin-dependent single-nucleon momentum distribution for the isospin-asymmetric nuclear matter in heavy-ion collisions
• Effects of $P_{\mathrm{tot}}$ gates and velocity gates on light-particle momentum correlation in intermediate-energy heavy-ion collisions
• Proton-proton momentum correlation function as a probe of the high momentum tail of the nucleon momentum distribution

Cited by in corpus (2)

• Impact of fragment formation on shear viscosity in the nuclear liquid-gas phase transition region
• Branching ratio and information entropy for the p+${}^{12}$C reaction in the extended-quantum-molecular-dynamics model