Current response characteristics of microchannel plates x-ray detector using synchrotron radiation (0. 6--2 keV and 5--20 keV)

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140236· OSTI ID:5706757

Kondoh, T; Yamaguchi, N; Cho, T; Hirata, M; Miyoshi, S; Aoki, S; Maezawa, H; Nomura, M

The characteristics of microchannel plates (MCPs) for detection of x rays have been investigated using synchrotron radiation in the energy ranges from 0.6 to 2.0 keV and from 5 to 20 keV. Microchannel plates are operated under the condition of an unsaturated pulse-height distribution mode. The current response curve of MCPs is measured continuously with x-ray energy variation for the first time. The experimental result of some discontinuous jumps in the response is obtained at the energies corresponding to the absorption edge of the MCP materials. In the low-energy range (h..nu..<2 keV), the dependence of the current response to the incident angle of x rays to the channel axis theta is measured to be proportional to cot theta, which is interpreted by the x-ray absorption near the surface of MCP channel wall. While, in the high-energy range (h..nu..>5 keV), a weak dependence on theta is observed, and is attributed mainly to the penetration of x rays through multiple channels.

• Research Organization: Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
• OSTI ID: 5706757
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 59:2; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
BREMSSTRAHLUNG
CALIBRATION
DESIGN
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIER DETECTORS
ELECTRON MULTIPLIERS
ELECTRON TUBES
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MICROCHANNEL ELECTRON MULTIPLIERS
PERFORMANCE
PLASMA DIAGNOSTICS
RADIATION DETECTORS
RADIATIONS
SYNCHROTRON RADIATION
X RADIATION