02-01-2020 дата публикации
Номер: US20200003706A1
Принадлежит:
Device and method for measuring in-situ time-resolved X-ray absorption spectrum. The device comprises an X-ray source, a first slit, an acousto-optic tunable X-ray filter, a radio frequency transmitter, a second slit, a front ionization chamber, a front ionization chamber signal amplifier, a sample to be tested, a rear ionization chamber, a rear ionization chamber signal amplifier, a data collector, and a computer. The X-ray source, the acousto-optic tunable X-ray filter, and the radio frequency transmitter are used to generate a monochromatic X-ray beam; the front ionization chamber is used to measure the intensity of the X-ray beam before passing through the sample; the rear ionization chamber is used to measure the intensity of the X-ray beam after passing through the sample; the front ionization chamber signal amplifier, the rear ionization chamber signal amplifier, the data collector, and the computer are used for data acquisition and data processing. 1. A device for measuring in-situ time-resolved X-ray absorption spectrum , comprising:{'b': '1', 'an X-ray source (),'}{'b': '2', 'a first slit (),'}{'b': '9', 'an acousto-optic tunable X-ray filter (),'}{'b': '10', 'a radio frequency transmitter () having an input and sending out an excitation signal,'}{'b': '4', 'a second slit (),'}{'b': '5', 'a front ionization chamber () having an output signal,'}{'b': '11', 'a front ionization chamber signal amplifier (),'}{'b': '6', 'a sample to be tested (),'}{'b': '7', 'a rear ionization chamber () having an output signal,'}{'b': '13', 'a rear ionization chamber signal amplifier (),'}{'b': '12', 'a data collector () having an output, and'}{'b': '14', 'a computer () having an input and an output,'}{'b': 2', '9', '1, 'wherein the first slit () and the acousto-optic tunable X-ray filter () are arranged sequentially along the light beam emitting direction of the X-ray source ();'}{'b': 4', '5', '6', '7', '9, 'the second slit (), the front ionization chamber (), the sample to ...
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