Neutron penumbral imaging at Gekko XII (abstract)

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141645· OSTI ID:6205557

Miyanaga, N; Chen, Y; Unemoto, M; Yamanaka, M; Yamanaka, T; Nakai, S ^[1]; Iida, T ^[2]; Iguchi, T; Nakazawa, M ^[3]

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1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565 (Japan)
2. Department of Nuclear Engineering, Faculty of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565 (Japan)
3. Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113 (Japan)

14 MeV DT neutrons emitted from a laser-imploded target have been imaged by using a penumbral aperture camera. This system consists of a 6-cm-thick tungsten toroidal aperture, an array of plastic scintillators, an optical fiber coupled two-stage image intensifier, and a cooled CCD camera. A burn region has been observed with a spatial resolution of {approximately}35 {mu}m at a neutron yield of 5{times}10{sup 11}. The spatial resolution was determined by a pixel resolution, the accuracy of the aperture fabrication, the alignment accuracy of the aperture, the signal-to-noise ratio of an encoded image, and the statistical fluctuation in detecting neutrons.

• OSTI ID: 6205557
• Journal Information: Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:10; ISSN RSINA; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
APERTURES
CHARGE-COUPLED DEVICES
GEKKO FACILITY
IMAGE TUBES
LASER TARGETS
LASER-PRODUCED PLASMA
MEASURING INSTRUMENTS
NEUTRON DETECTORS
OPENINGS
PLASMA
PLASMA DIAGNOSTICS
RADIATION DETECTORS
RESOLUTION
SEMICONDUCTOR DEVICES
SIGNAL-TO-NOISE RATIO
TARGETS