腔靶内爆区超热电子实验研究

EXPERIMENTAL STUDY OF SUPERTHERMAL ELECTRONSIN THE IMPLOSION REGION OF A CAVITY TARGET

利用１０道滤波荧光谱仪（ＦＦＳ）研究了强激光和薄壁腔靶相互作用时超热电子产生的特征，结合ＧａＡｓ硬Ｘ射线角分布探头、受激喇曼散射光探头、针孔相机的测量结果，分析得出：在内爆腔靶中，超热电子产生在源区，大部分超热电子被静电场和转换体约束在源区，只有小部分能量较高的超热电子进入到内爆区；内爆靶区超热电子总能量占超热电子总能量的约２０％，占入射激光能量的１％—２％。

おharacteristics of superthermal electrons were studied experimentally with a tenchannel filter fluorescent spectrometer. This result was compared with those from other detectors, such as GaAs detector, SRS detector and Xray pinhole camera. It is shown that superthermal electrons are produced in the source region of the cavity target, with most of them confined in this region, and only a small part (about 20%) of them with very high energy will go into the implosion region.