Investigation of the short-range correlation and its induced high-momentum tail by photon emission from intermediate energy heavy-ion reactions

TL;DR

This study explores how high-momentum tails in neutron-rich nuclei influence photon emission during intermediate energy heavy-ion collisions, revealing that photon production is sensitive to these high-momentum components and can serve as a probe.

Contribution

It demonstrates that bremsstrahlung photon emission is sensitive to high-momentum tails in nucleon distributions, providing a new method to probe nuclear short-range correlations.

Findings

Photon emission increases with high-momentum tail presence.

Double differential photon production ratio can probe HMT.

Photon emission is sensitive to neutron-rich nuclear structure.

Abstract

The effect of high-momentum tail (HMT) in nucleon momentum distribution of neutron-rich nuclei has been investigated by employing proton-neutron bremsstrahlung photons in the reactions of $^{124}$Sn +$ ^{124}$Sn, $^{112}$Sn + $^{112}$Sn and $^{197}$Au + $^{197}$Au at intermediate energies based on the IBUU transport model. With the time evolution of photon multiplicity and the double differential probability of photon production, we show the emission of bremsstrahlung photons is sensitive to the high-momentum component in nucleon momentum distribution of neutron-rich nuclei, and the HMT can lead to an obvious increase of hard photon production from proton-neutron bremsstrahlung collisions. Finally, the ratio of double differential photon production probability is examined as possible probe of the HMT in nucleon momentum distribution of neutron-rich nuclei.