Microchannel plates as detectors and amplifiers of x-ray images
Two decades of development driven largely by military night vision applications has led to the availability of a wide selection of microchannel plates for use by the scientific community. Microchannel plates (MCPs) are electron multipliers which retain a high degree of spatial resolution making it possible to amplify electron images by factors of 1,000 or more. Plates having 40 mm diameter and intrinsic spatial resolution of 8 {mu}m are readily available. By coating the front surface of a microchannel plate with an x-ray sensitive photocathode material, x-ray images can be detected and amplified. While the detective quantum efficiency is relatively low, the low noise of the MCP (including the ability to construct images by single photon detection) and its high dynamic range make it suitable for some x-ray microscopy applications. The principles of MCP operation and typical performance are discussed. Examples of related applications and commercial capabilities are also presented.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10169801
- Report Number(s):
- UCRL-JC-110906; CONF-920792-64; ON: DE93017119; TRN: 93:016683
- Resource Relation:
- Conference: 37. annual Society of Photo-Optical Instrumentation Engineers (SPIE) international symposium on optical and optoelectronic applied science and engineering,San Diego, CA (United States),19-24 Jul 1992; Other Information: PBD: Aug 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
X-RAY DETECTION
ELECTRON MULTIPLIER DETECTORS
PERFORMANCE
TECHNOLOGY TRANSFER
SPATIAL RESOLUTION
MICROCHANNEL ELECTRON MULTIPLIERS
AMPLIFICATION
COATINGS
PHOTOCATHODES
MATERIALS
IMAGES
QUANTUM EFFICIENCY
MICROSCOPY
OPERATION
USES
440101
GENERAL DETECTORS OR MONITORS AND RADIOMETRIC INSTRUMENTS