发表机构
Duke University; Triangle Universities Nuclear Laboratory; North Carolina Central University; The George Washington University（杜克大学; 三角大学核实验室; 北卡罗来纳中央大学; 乔治华盛顿大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
首次在HI$\gamma$S上测量$^3$He的康普顿散射，以探测中子电磁极化率，实验数据与手征有效场论在97.1 MeV吻合，但在61.5 MeV存在偏差，需进一步理论改进。
AI 中文摘要
在世界上首次对$^3$He靶进行了康普顿散射测量，以探测中子电磁极化率。利用三角大学核实验室高强度$\gamma$射线源产生的圆偏振、准单能光子束，在加权平均能量为61.5和97.1 MeV时，测量了实验室角度$40^\circ$、$55^\circ$、$90^\circ$、$115^\circ$、$150^\circ$处的微分截面。与手征有效场论的比较显示，在97.1 MeV时符合良好，但在61.5 MeV时预测过高，这促使进一步的理论发展。
英文摘要
The world's first Compton scattering measurements on a $^3$He target were performed to probe neutron electromagnetic polarizabilities. Differential cross sections were measured at laboratory angles of $40^\circ$, $55^\circ$, $90^\circ$, $115^\circ$, $150^\circ$, using circularly polarized, quasi-monoenergetic photon beams at weighted mean energy values of 61.5 and 97.1 MeV from the High Intensity $γ$-ray Source at the Triangle Universities Nuclear Laboratory. Comparisons with chiral effective field theory show good agreement at 97.1 MeV but over-prediction at 61.5 MeV, motivating further theoretical development.
Comments8 pages, 5 figures. Accepted for publication in Physical Review Letters
