An x-ray image intensifier system for precision wavelength dispersive x-ray spectroscopy
- University of California, Lawrence Livermore National Laboratory, Livermore, CA (USA)
- University of California, Space Sciences Laboratory, Berkeley, CA (USA)
We have constructed a high-resolution x-ray image intensifier (XRII) for use in atomic physics. The XRII consists of an alkali halide scintillator crystal coupled by a fiber optic to a proximity focused microchannel plate stack with a bialkali photocathode and wedge and strip readout. The useful area of the detector is 12 cm{sup 2}. We have measured full width half maximum spatial resolutions at 22 keV of 300 {mu}m and at 122 keV of 600 {mu}m with 0.5-mm-thick and 1.6-mm-thick CsI(Na) crystals, respectively. With NaI(Tl) crystals, x-ray arrival times can be determined with sub-100 ns resolution. In this paper we present the detailed performance of the XRII as well as a brief discussion of the theory of photoelectron limited fast timing.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6541472
- Journal Information:
- Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:8; ISSN RSINA; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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