论文标题
用于激光 - 血浆应用的高密度极化3HE气流靶
A high-density polarized 3He gas-jet target for laser-plasma applications
论文作者
论文摘要
用于核体物理实验的激光驱动的3HE2+光束源和对极化核融合的研究需要高密度极化的3HE气体射流靶标。这样的目标需要一个磁系统，为核自旋提供永久均匀的保持场以及一组线圈，以调节极化的方向。从最大压力的运输容器开始，将氦气压缩在短时间内被压缩，并可以通过非磁性开口阀和喷嘴将其注入激光互动室，从而形成大约10^19 cm-3的射流，宽度约为10^19 cm-3，宽度约为1 mm。目标包括一个3D调整系统，用于相对于激光焦点的精确定位。辅助气体系统提供远程目标操作和用AR气体冲洗气体，这有助于减少极化损失。提出了目标的设计，其操作程序和第一个实验结果。
A laser-driven spin-polarized 3He2+ beam source for nuclear-physics experiments and for the investigation of polarized nuclear fusion demands a high-density polarized 3He gas-jet target. Such a target requires a magnetic system providing a permanent homogeneous holding field for the nuclear spins plus a set of coils for adjusting the orientation of the polarization. Starting from a transport vessel at a maximum pressure of 3 bar, the helium gas is compressed for a short time and can be injected into a laser-interaction chamber through a non-magnetic opening valve and nozzle, thus forming jets with densities of about a few 10^19 cm-3 and widths of about 1 mm. The target comprises a 3D adjustment system for precise positioning of the jet relative to the laser focus. An auxiliary gas system provides remote target operation and flushing of the gas lines with Ar gas, which helps to reduce polarization losses. The design of the target, its operation procedures and first experimental results are presented.
