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Stigmatic Spectroscopic Instruments for the Wavelength Range 30-300 Å With High Angular and Spectral Resolution Using Multi-layer Mirrors

Published online by Cambridge University Press:  12 April 2016

E.N. Ragozin
E.N. Ragozin*
Affiliation:
P.N. Lebedev Physics Institute, Moscow, USSR

Extract

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A concept of stigmatic spectroscopic instruments for the range λ ~30-300 Å is presented, A parallel beam is dispersed by means of a plane diffraction grating at grazing incidence, whereas focusing of the XUV radiation is performed by a concave multilayer mirror at normal incidence. A spectroheliograph of the new type may have dispersion an order of magnitude higher than traditional Wadsworth-type instruments. The theoretical resolving power of a spectrograph of the new type is limited by apertures of the multilayer mirrors or by the total number of grooves of the grating and many reach (λ/δλ)theor ~ mN ~ 3.105 using presently available optical elements.

Type
9. Future X-ray Observatories, Detectors and Instrumentation
Information
International Astronomical Union Colloquium , Volume 115: High Resolution X-ray Spectroscopy of Cosmic Plasmas , 1990 , pp. 380 - 383
Copyright
Copyright © Cambridge University Press 1990

References

Gaponov, S.V. et al. 1987, JTP Letters (Sov.Phys.),13, 214.Google Scholar
Mack, J.E., Stehn, J.R., Edlen, B., 1932,J.Opt.Soc.Amer.22,245.Google Scholar
Sampson, J.A.R. 1967, Techniques of Vacuum Ultraviolet Spectroscopy (N.Y.:John Wiley & Sons).Google Scholar
Vinogradov, A.V., Kozhevnicov, I.V.,1986, Moscow,P.N. Lebedev Physics Institute, Preprint N° 103.Google Scholar