Calibration of an imaging crystal spectrometer for low x-ray energies.
An x-ray imaging crystal spectrometer was designed for the Hanbit magnetic mirror device to observe spectra of heliumlike neon at 13.4474 A. The spectrometer consists of a spherically bent mica crystal and an x-ray sensitive vacuum charge coupled device camera. This spectrometer can provide spatially resolved spectra, making it possible to obtain profiles of the ion charge state distribution from line ratios and profiles of the plasma rotation velocity from Doppler shift measurements. The paper describes measurements of spectral resolution of this instrument for low x-ray energies.
Lee
S G
SG
National Fusion Research Institute, Yusung, Taejeon 305-333, Korea. sglee@nfri.re.kr
Bak
J G
JG
Bitter
M
M