ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A vertical dispersion variant of the double-crystal spectrometer (DCV), which has been successfully used to study radiative transport in plasmas with large velocity gradients, is described. The full theory of the instrument is presented with particular reference to distortion of the spectral lines observed. The main characteristics of the DCV were computed by ray tracing procedures and compared with experiment. Due to its extremely high dispersion, the DCV minimizes geometric apparatus smearing, the distortion of the spectra is negligible a high spectral resolution (typically several thousand or better) can be achieved at relatively small source-to-detector distances. The instrument provides two sets of spectra with one-dimensional spatial resolution at the level of 10 μm, and its sensitivity to relative positions and shifts of the spectral lines may be estimated as one part in 105. The very high precision in wavelength determination, both absolute and relative, combined with an acceptable luminosity make this spectrometer especially useful for ultrahigh-resolution spectroscopy of laser-produced plasmas. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1145488
Permalink
