Paul Scherrer Institut, CH-5232 Villigen, Switzerland.
J Synchrotron Radiat. 2010 Sep;17(5):653-68. doi: 10.1107/S0909049510026051. Epub 2010 Jul 22.
The MYTHEN single-photon-counting silicon microstrip detector has been developed at the Swiss Light Source for time-resolved powder diffraction experiments. An upgraded version of the detector has been installed at the SLS powder diffraction station allowing the acquisition of diffraction patterns over 120 degrees in 2theta in fractions of seconds. Thanks to the outstanding performance of the detector and to the calibration procedures developed, the quality of the data obtained is now comparable with that of traditional high-resolution point detectors in terms of FWHM resolution and peak profile shape, with the additional advantage of fast and simultaneous acquisition of the full diffraction pattern. MYTHEN is therefore optimal for time-resolved or dose-critical measurements. The characteristics of the MYTHEN detector together with the calibration procedures implemented for the optimization of the data are described in detail. The refinements of two known standard powders are discussed together with a remarkable application of MYTHEN to organic compounds in relation to the problem of radiation damage.
瑞士光源开发了用于时间分辨粉末衍射实验的 MYTHEN 单光子计数硅微条探测器。探测器的升级版本已安装在 SLS 粉末衍射站,允许在 2θ 上采集超过 120 度的衍射图案,时间为几分之一秒。由于探测器的出色性能和开发的校准程序,与传统的高分辨率点探测器相比,现在获得的数据质量在 FWHM 分辨率和峰形方面具有可比性,并且具有快速同时采集完整衍射图案的额外优势。因此,MYTHEN 非常适合时间分辨或剂量关键测量。详细描述了 MYTHEN 探测器的特性以及为优化数据而实施的校准程序。讨论了两个已知标准粉末的改进,以及 MYTHEN 在与辐射损伤问题相关的有机化合物方面的一个显著应用。