Photoelectron track image of capillary gas proportional counter
Photoelectron track image of capillary gas proportional counter
复制标题
毛细管气体正比计数器光电子径迹图像
DOI：
10.1016/s0168-9002(03)01056-8
复制
发表时间：
2003
影响因子：
1.4
通讯作者：
N. Ujiie
中科院分区：
文献类型：
--
作者：
H. Sakurai;S. Gunji;F. Tokanai;T. Maeda;N. Saitoh;N. Ujiie
采用光学成像毛细管气体正比计数器（CGPC）获得X射线光电子径迹图像，研制了分块像素气体探测器。通过反射镜光学系统，用与CGPC结合的图像增强CCD相机读出像素信号。在1atm的Ar+8%CH_4 + 2%TMA的潘宁混合气体中，利用光学成像CGPC成功地探测到了22keV X射线的清晰光电子径迹图像。对于图像，光电子轨迹的检测效率约为95%。22keV X射线光电子的评价范围为5.2mm，与已发表的范围一致。具有高分辨率能力的光学成像CGPC可用于成像类型的X射线偏振计和医学科学领域。
The segmented pixel gas detector has been developed with an optical imaging capillary gas proportional counter (CGPC) to obtain an image of an X-ray photoelectron track. The pixel signal is read out with an image-intensified CCD camera combined with the CGPC through the optical system of mirrors. Using the optical imaging CGPC with a penning gas mixture of Ar+8% CH4+2% TMA at 1atm, we have successfully detected clear images of photoelectron tracks for 22keV X-rays. The detection efficiency of the photoelectron track was approximately 95% for the images. The evaluated range of 5.2mm for 22keV X-ray photoelectron was consistent to the published ranges. The optical imaging CGPC with the high-resolution capability is available for an imaging type of X-ray polarimeter and for the field of medical science.