Time-resolving extreme ultraviolet spectrograph for fusion diagnostics

Journal Article · Tue Dec 01 00:00:00 EST 1981 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1136537· OSTI ID:5860108

Bell, R E; Finkenthal, M; Moos, H W

A time-resolving spectrograph for the simultaneous measurement of emissions at extreme ultraviolet wavelengths (300--2200 A) is described. The spectrograph is a 400-mm normal incidence f/30 system with seven gratings. Together two of the gratings cover the entire wavelength range at low resolution. The other five gratings have higher dispersion and cover adjacent intervals of the spectrum. The spectral resolution varies between 0.7--4 A. The detector consists of a windowless microchannel plate/phosphor screen image intensifier, coupled by fiber optics to a 1024-element self-scanning integrated photodiode array. The output from the array is digitized and stored by a small desktop computer which has sufficient memory to record up to 80 spectra during a single plasma discharge.

• Research Organization: Department of Physics, The Johns Hopkins University, Baltimore, Maryland 21218
• DOE Contract Number: DE-AS02-76ET53006
• OSTI ID: 5860108
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 52:12
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DIAGNOSTICS
ULTRAVIOLET SPECTROMETERS
THERMONUCLEAR REACTIONS
COMPUTERS
DIGITIZERS
EXPERIMENTAL DATA
FAR ULTRAVIOLET RADIATION
IMAGE INTENSIFIERS
MICROCHANNEL ELECTRON MULTIPLIERS
OPTICAL DISPERSION
PHOSPHORS
PHOTODIODES
PLATES
TIME RESOLUTION
WAVEGUIDES
WAVELENGTHS
DATA
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIERS
ELECTRON TUBES
INFORMATION
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
NUMERICAL DATA
RADIATIONS
RESOLUTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SPECTROMETERS
TIMING PROPERTIES
ULTRAVIOLET RADIATION
700102* - Fusion Energy- Plasma Research- Diagnostics