Medipix2/Timepix detector for time resolved Transmission Electron Microscopy
Medipix2/Timepix detector for time resolved Transmission Electron Microscopy
复制标题
用于时间分辨透射电子显微镜的 Medipix2/Timepix 探测器
DOI：
10.1088/1748-0221/6/12/c12052
复制
发表时间：
2011
影响因子：
1.3
通讯作者：
D. McGrouther
中科院分区：
文献类型：
--
作者：
Robert Beacham;A. Raighne;D. Maneuski;V. O’Shea;S. McVitie;D. McGrouther
我们研究了使用 Timepix 探测器作为提高传统 200keV 透射电子显微镜 (TEM) 可实现时间分辨率的方法。对单一模式和积分模式图像曝光进行评估。单次曝光模式图像显示，可用电子束电流成为时间尺度 < 100 μs 的限制因素。对积分模式图像的分析表明，曝光时间可以缩短至 500 ns，但图像强度和噪声会增加。获得的性能数据表明当前 TEM CCD 成像探测器的性能得到显着改进。
We have investigated the use of a Timepix detector as a method for increasing the realisable temporal resolution of a conventional 200keV transmission electron microscope (TEM). Evaluation of both single and integral mode image exposures was performed. Single exposure mode images showed that the available electron beam current became the limiting factor for timescales < 100 μs. Analysis of integral mode images showed that exposures times down to 500 ns were possible but that increases in image intensity and noise occurred. The performance data obtained represents a significant performance improvement on current TEM CCD imaging detectors.