Microchannel plate response to hard x-rays. [8-100 keV x-rays]
Conference
·
OSTI ID:7211923
The current response and the pulse response of a microchannel plate, MCP, to x-rays incident at an angle of 45/sup 0/ in the energy range of 8 to 100 keV were measured. The x-ray detection efficiency, pulse height distributions, and sensitive depth of the MCP were determined from these data. Detection efficiency extrapolates to zero below 8 keV, and ranges between values of 1% and 2.6% above this energy, much higher than anticipated from previous measurements for oblique incidence below 6 keV. When compared to previous measurements at higher energies, it is concluded that MCP's have a relatively constant detection efficiency in the energy range 10 to 600 keV, which is a rather unique property as compared to other x-ray detectors. It was found that the shape of current response curves differs somewhat from the shape of efficiency curves, that pulse height distributions are proportional to pulse height to the -1.1 to -1.6 power, and that 90% of the current originates in the first 25 to 30% of the MCP thickness.
- Research Organization:
- Sandia Labs., Livermore, Calif. (USA); Sandia Labs., Albuquerque, N.Mex. (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 7211923
- Report Number(s):
- SAND-77-8621; CONF-770434-4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANGULAR CORRELATION
CORRELATIONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIER DETECTORS
ELECTRON MULTIPLIERS
ELECTRON TUBES
ENERGY RANGE
FUNCTIONS
IMAGE CONVERTERS
IMAGE TUBES
IONIZING RADIATIONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MEASURING INSTRUMENTS
MICROCHANNEL ELECTRON MULTIPLIERS
PULSES
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
RESPONSE FUNCTIONS
SENSITIVITY
X RADIATION
X-RAY DETECTION
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANGULAR CORRELATION
CORRELATIONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIER DETECTORS
ELECTRON MULTIPLIERS
ELECTRON TUBES
ENERGY RANGE
FUNCTIONS
IMAGE CONVERTERS
IMAGE TUBES
IONIZING RADIATIONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MEASURING INSTRUMENTS
MICROCHANNEL ELECTRON MULTIPLIERS
PULSES
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
RESPONSE FUNCTIONS
SENSITIVITY
X RADIATION
X-RAY DETECTION