Time resolved, sub-keV x-ray measurements using filtered x-ray diodes
Filtered x-ray diode detectors were used to measure absolute x-ray spectra below 1.5 keV at the Lawrence Livermore Laboratory Argus and Shiva laser facilities. We use K or L-edge filters in five and ten channel arrays to obtain energy resolution between 200 eV and 1.5 keV with channel FWHM's typically 200 eV. A channel with relatively uniform energy response is employed to independently measure the total x-ray energy up to 1.5 keV. Filter transmissions and detector sensitivities are measured absolutely to within +- 10% and +- 20% respectively at Lawrence Livermore Laboratory. With a FWHM time response that is less than 180 ps, the windowless diode detector developed for our experiments does not contribute significantly to system time response. Most of the fast oscilloscopes that we use for recording signals have a FWHM of 300 or 700 ps. We present, as examples, some ten channel x-ray spectral results obtained for disk irradiations at the Argus 1.06 micron laser facility.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5481965
- Report Number(s):
- UCRL-81478; CONF-781053-15
- Country of Publication:
- United States
- Language:
- English
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