论文标题
从$ \ vec {{^3} he}（\vecγ，p）d $反应在29 meV的入射光子能量上反应的不对称性和Gerasimov-Drell-Hearn Integrand的首次测量
First Measurement of the Asymmetry and the Gerasimov-Drell-Hearn Integrand from $\vec{{^3}He}(\vecγ,p)d$ reaction at the Incident Photon Energy of 29 MeV
论文作者
论文摘要
$ \ vec {^3he}（\vecγ，p）d $进程的第一个测量是在三角大学核实验室（TUNL）的高强度$γ$ ray源（HI $γ$ S）的设施中使用循环极化的单极化的，单元$γ$γ$ -2 $ - 型$ -Dolaripied $^$^$^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $。提取了旋转依赖性的不对称性以及两体光分解对$^3 $ he gerasimov-drell-hernn Integrand的贡献，并与29.0 MEV的入射光子能量下的最先进的三核子系统计算进行了比较。数据一般与基于Siegert定理或明确包含Meson-Exchange Currents的各种理论预测一般一致。
The first measurement of the $\vec{^3He}(\vecγ,p)d$ process was performed at the High Intensity $γ$-ray Source (HI$γ$S) facility at Triangle Universities Nuclear Laboratory (TUNL) using a circularly polarized, monoenergetic $γ$-ray beam and a longitudinally polarized $^3$He target. The spin-dependent asymmetry and the contribution from the two-body photodisintegration to the $^3$He Gerasimov-Drell-Hearn integrand are extracted and compared with state-of-the-art three-nucleon system calculations at the incident photon energy of 29.0 MeV. The data are in general agreement with the various theoretical predictions based on the Siegert theorem or on explicit inclusion of meson-exchange currents.
