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Title: Effect of contrast enhancement prior to iteration procedure on image correction for soft x-ray projection microscopy

Soft X-ray microscopy is well recognized as a powerful tool of high-resolution imaging for hydrated biological specimens. Projection type of it has characteristics of easy zooming function, simple optical layout and so on. However the image is blurred by the diffraction of X-rays, leading the spatial resolution to be worse. In this study, the blurred images have been corrected by an iteration procedure, i.e., Fresnel and inverse Fresnel transformations repeated. This method was confirmed by earlier studies to be effective. Nevertheless it was not enough to some images showing too low contrast, especially at high magnification. In the present study, we tried a contrast enhancement method to make the diffraction fringes clearer prior to the iteration procedure. The method was effective to improve the images which were not successful by iteration procedure only.
Authors:
; ;  [1] ;  [2] ; ; ;  [3]
  1. Graduate School of Advanced Integration Science, Chiba Univ., Chiba-shi, Chiba, 263-8522 (Japan)
  2. Tokyo Metropolitan Industrial Technol. Res. Inst, Koto-ku, Tokyo, 135-0064 (Japan)
  3. School of Engineering, Tokai Univ., Hiratsuka-shi, Kanagawa, 259-1292 (Japan)
Publication Date:
OSTI Identifier:
22494399
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1696; Journal Issue: 1; Conference: XRM 2014: 12. international conference on X-ray microscopy, Melbourne (Australia), 26-31 Oct 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BIOMEDICAL RADIOGRAPHY; DIFFRACTION; FRESNEL COEFFICIENT; IMAGES; MICROSCOPY; SOFT X RADIATION; SPATIAL RESOLUTION