相对论电子束在角向磁场中产生硬X射线的实验研究

Experimental study on hard Xray generation of REB in azimuthal magnetic field

摘要: 在闪光二号加速器上用相对论电子束在低压气体和角向磁场中传输打靶的方法，进行了硬X射线产生的实验研究。在47cm传输距离上，电子束与钽靶作用，获得了面积积分剂量率为2.1×1010Gy·cm2/s的硬X射线辐射（能谱范围为20～120keV），在总的辐照面积上(4π方向)面积积分剂量达1 843Gy·cm2，X射线转换率达到108Gy·cm2/kJ。

Abstract: Experimental study on hard Xray generation was carried out on Ｆlash 2 accelerator, with the method of REB transported in a low pressure gas via azimuthal magnetic field and interacted with Ta target. At 47cm transporting distance, the measured areal integral of hard Xray dose rate was 2.1×１０１０Gy·cm2/s,total areal integral of hard X-ray dose was 1 843Gy·cm2, and Xray convert rate was 108Gy·cm2/kJ．