Gamma-radiation registration efficiency of herringbone assembly of microchannel plates

Journal Article · Sun Nov 01 04:00:00 EST 1987 · Instrum. Exp. Tech. (Engl. Transl.); (United States)

OSTI ID:5179269

Shilov, A L; Ershov, L S; Ivanov, V N; Il'chenko, A V; Morgovskii, L Ya; Tyutikov, A M

A study is made of the registration efficiency of a herringbone assembly of two microchannel plates (MCP) for gamma radiation from /sup 55/Fe (5.6 keV), /sup 241/Am (59.6 keV) and /sup 137/Cs (662 keV) as a function of plate thickness. The sources of calibrated by a scintillation detector with a NaI(Tl) crystal and a proportional counter. The measurements are made in the pulse-count mode, and the registration threshold is approx. 10/sup 6/ electrons per pulse. It is shown that the optimum voltage, with regard to efficiency, on the first MCP for thin (<1 mm) MCPs is equal to the voltage of maximum amplification, while for thick (1-3 mm) MCPs, it is somewhat lower. The efficiency is measured as a function of the thickness of the first MCP, which varies within 0.7-3 mm. The maximum registration efficiencies are 2.5% for radiation with an energy of 5.9 keV, 25% for 59.6 keV, and 4% for 662 keV.

• OSTI ID: 5179269
• Journal Information: Instrum. Exp. Tech. (Engl. Transl.); (United States), Journal Name: Instrum. Exp. Tech. (Engl. Transl.); (United States) Vol. 30:3; ISSN INETA
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors &amp; Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
CESIUM 137
CESIUM ISOTOPES
DETECTION
DIMENSIONS
EFFICIENCY
ELECTRON CAPTURE RADIOISOTOPES
ELECTRON MULTIPLIERS
ELECTRON TUBES
ENERGY ABSORPTION
EVEN-ODD NUCLEI
GAMMA DETECTION
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IRON 55
IRON ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
MICROCHANNEL ELECTRON MULTIPLIERS
NUCLEI
ODD-EVEN NUCLEI
PERFORMANCE TESTING
PLATES
RADIATION DETECTION
RADIATION DETECTORS
RADIOISOTOPES
SIGNAL-TO-NOISE RATIO
TESTING
THICKNESS
YEARS LIVING RADIOISOTOPES