X-ray fluoresced high-Z (up to Z=82) K x rays produced by LiNbO3 and LiTaO3 pyroelectric crystal electron accelerators
X-ray fluoresced high-Z (up to Z=82) K x rays produced by LiNbO3 and LiTaO3 pyroelectric crystal electron accelerators
复制标题
由 LiNbO3 和 LiTaO3 热释电晶体电子加速器产生的 X 射线荧光高 Z（最高 Z=82）K x 射线
DOI：
10.1063/1.1782260
复制
发表时间：
2003
影响因子：
4
通讯作者：
S. Shafroth
中科院分区：
文献类型：
--
作者：
J. Brownridge;S. Shafroth
高能韧致辐射和Kx射线被用来通过x射线荧光产生高达87keV(铅)的几乎无本底的Kx射线谱。荧光辐射是由电子加速器产生的，电子加速器由加热和冷却的柱状LiTaO_3和LiNbO_3晶体组成，在mTorr压力下。气体放大过程是通过优化环境气体压力以最大化电子能量来产生高能电子，当入射到W/Bi靶上时，产生由高能韧致辐射以及W和BiKx射线组成的辐射场。这些光子被用来荧光Ta和PbKx射线。
High-energy bremsstrahlung and K x rays were used to produce nearly background-free K x-ray spectra of up to 87keV (Pb) via x-ray fluorescence. The fluorescing radiation was produced by electron accelerators, consisting of heated and cooled cylindrical LiTaO3 and LiNbO3 crystals at mTorr pressures. The process of gas amplification whereby the ambient gas pressure is optimized to maximize the electron energy was used to produce energetic electrons which when incident on a W∕Bi target, gave rise to a radiation field consisting of high-energy bremsstrahlung as well as W and Bi K x rays. These photons were used to fluoresce Ta and Pb K x rays.