2024/06/20 by Dawei Si, Sheng Xiao, Si, Dawei +47 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear physics research studies
paper · pdf · doi:10.48550/arxiv.2406.18605
openalex publication_date 2024/06/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The emission of neutrons from heavy ion reactions is an important observable for studying the asymmetric nuclear equation of state and the reaction dynamics. A 20-unit neutron array has been developed and mounted on the compact spectrometer for heavy ion experiments (CSHINE) to measure the neutron spectra, neutron-neutron and neutron-proton correlation functions. Each unit consists of a \rm 15× 15× 15~cm3 plastic scintillator coupled to a ϕ=52 ~\rm mm photomultiplier. The Geant4 simulation with optical process is performed to investigate the time resolution and the neutron detection efficiency. The inherent time resolution of 212 ps is obtained by cosmic ray coincidence test. The n-γ discrimination and time-of-flight performance are given by \rm 252Cf radioactive source test and beam test. The neutron energy spectra have been obtained in the angle range 30^∘ ≤ θ\rm lab ≤ 51^∘ in the beam experiment of 124Sn+124Sn at 25 MeV/u with CSHINE.