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Showing papers by "Roman Tatchyn published in 1980"

Journal Article•DOI•
Diffraction efficiencies of holographic transmission gratings in the region 80–1300 eV

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J. P. Delvaille1, H.W. Schnopper1, E. Källne2, I. Lindau3, Roman Tatchyn3, R.A. Gutchek3, R. Z. Bachrach4, J.H. Dijkstra •
Smithsonian Astrophysical Observatory1, University of Virginia2, Stanford University3, PARC4
15 May 1980-Nuclear Instruments and Methods
TL;DR: In this paper, the authors describe a grating model that predicts the overall efficiency and the detailed behavior of the grating around the regions of anomalous dispersion, which can be used to predict the efficiencies for an arbitrary grating material and thickness.

18 citations

Journal Article•DOI•
Analysis of a New Method for Determining Optical Constants in the Soft X-ray Region

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Roman Tatchyn, I. Lindau, E. Källne
01 Nov 1980-Journal of Modern Optics
TL;DR: In this paper, a new method for measuring optical constants using transmission gratings is presented and analyzed, based on utilizing the properties of ultra-thin transmission diffraction gratings, which is independent of the absolute intensity of the radiation source.
Abstract: In this paper, a new method for measuring optical constants using transmission gratings is presented and analysed. The method, based on utilizing the properties of ultra-thin transmission diffraction gratings, is independent of the absolute intensity of the radiation source, the most critical part of the experiment being the accurate measurement and control of the diffraction grating parameters. By way of example, this paper relates the use of the new method to gold in the soft X-ray regime. By extension, it is shown that the same technique may be used on other materials, as long as they may be shaped into similar grating structures, and as long as they fulfil certain other criteria, outlined in the main body of this paper.

11 citations

Journal Article•DOI•
Analysis of a method for measuring optical constants using transmission gratings: Application to gold in the 100–1000 eV energy range

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Roman Tatchyn1, I. Lindau1, E. Källne2•
Stanford University1, University of Virginia2
15 May 1980-Nuclear Instruments and Methods
TL;DR: In this article, an analytical study of the intensity distribution through a transmission grating was performed and it was shown that by choosing two gratings with large aspect ratios the influence of irregularities in the grating structures is small and the transmitted intensity distributions can be used to extract the optical constants.

3 citations

Journal Article•DOI•
The phase-space optimization and surface derivation of grazing incidence synchrotron radiation mirrors

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Roman Tatchyn1, I. Lindau1•
Stanford University1
15 Sep 1980-Nuclear Instruments and Methods
TL;DR: In this paper, a criterion for minimum phase-space distortion of synchrotron light for both vertical and horizontal focusing/collimating grazing incidence mirrors is proposed, and the equations for the surfaces of the resulting minimum-distortion mirrors associated with a single-beam storage ring are derived.

1 citations