物理与工程2026，Vol.46Issue(5)：17-21,5.DOI:10.27024/j.wlygc.2026.06.29.is
追逐原子核反应最初的那束光
GAMMA-RAY SPECTRAL CLUES TO FLEETING PARTNERS INSIDE NUCLEI
摘要
Abstract
Nuclei are not bags of static balls.Most protons and neutrons move under the over-all nuclear environment,but a small fraction can form fleeting close-range partners and carry unusually large momenta.These short-range correlations cannot be photographed directly.Instead,they leave statistical clues in the high-energy gamma-ray spectrum emitted at the ear-liest stage of a heavy-ion collision:faster neutron-proton encounters are more likely to produce energetic gamma rays,hardening the spectral tail.A recent 124Sn+124Sn experiment at 25MeV per nucleon used this idea,together with transport-model comparisons,detector calibration,and background checks,to infer that about 20％of nucleons in 124Sn belong to short-range-correlation-related high-momentum components.The result provides a complementary gam-ma-ray route for studying short-distance motion inside nuclei.关键词
短程关联/高动量尾巴/轫致辐射伽马射线/重离子碰撞Key words
short-range correlation/high-momentum tail/bremsstrahlung gamma ray/heavy-ion collision引用本文复制引用
许俊怀,肖志刚..追逐原子核反应最初的那束光[J].物理与工程,2026,46(5):17-21,5.基金项目
国家自然科学基金项目(12335008). （12335008）
