Reconstruction of Bremsstrahlung $\gamma$-rays Spectrum in Heavy Ion Reactions with Richardson-Lucy Algorithm
Abstract
The high momentum tail (HMT) in the momentum distribution of nucleons above the Fermi surface has been regarded as an evidence of short-range correlations (SRCs) in atomic nuclei. It has been showcased recently that the Bremsstrahlung radiation in heavy ion reactions can be used to extract HMT information. The Richardson-Lucy (RL) algorithm is introduced to the reconstruction of the original Bremsstrahlung -ray energy spectrum from experimental measurements. By solving the inverse problem of the detector response to the -rays, the original energy spectrum of the Bremsstrahlung in 25 MeV/u Kr + Sn has been reconstructed and compared to the isospin- and momentum-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) simulations. The analysis based on hypothesis test suggests the existence of the HMT of nucleons in nuclei, in accordance with the previous conclusions. With its effectiveness being demonstrated, it is feasible to apply the RL algorithm in future experiments of measuring the Bremsstrahlung -rays in heavy ion reactions.
Keywords
Cite
@article{arxiv.2405.06711,
title = {Reconstruction of Bremsstrahlung $\gamma$-rays Spectrum in Heavy Ion Reactions with Richardson-Lucy Algorithm},
author = {JunHuai Xu and Yuhao Qin and Zhi Qin and Dawei Si and Boyuan Zhang and Yijie Wang and Qinglin Niu and Chang Xu and Zhigang Xiao},
journal= {arXiv preprint arXiv:2405.06711},
year = {2024}
}