Gamma-radiation registration efficiency of herringbone assembly of microchannel plates

Journal Article · Sun Nov 01 00:00:00 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), Vol. 30:3; Other Information: Translated from Prib. Tekh. Eksp.; 30: No. 3, 43-45(May-Jun 1987)
• Country of Publication: United States
• Language: English

Related Subjects

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