Measurement of coherence length and incoherent source size of hard x-ray undulator beamline at Pohang Light Source-II
SCIE
SCOPUS
- Title
- Measurement of coherence length and incoherent source size of hard x-ray undulator beamline at Pohang Light Source-II
- Authors
- Park, SY; Hong, CK; Lim, J
- Date Issued
- 2014-04
- Publisher
- AMER INST PHYSICS
- Abstract
- We measured the spatial coherence length and incoherent source size of a hard x-ray undulator beamline at Pohang Light Source-II, the stored electron energy of which has been increased from 2.5 GeV to 3 GeV. The coherence length was determined by single-slit measurement of the visibility of the Fresnel diffraction pattern. The correlated incoherent source size was cross-checked for three different optics: the single slit, beryllium parabolic compound refractive lenses, and the Fresnel zone plate. We concluded that the undulator beamline has an effective incoherent source size (FWHM) of 540 mu m (horizontal) x 50 mu m (vertical). (C) 2014 AIP Publishing LLC.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12832
- DOI
- 10.1063/1.4871099
- ISSN
- 0034-6748
- Article Type
- Article
- Citation
- REVIEW OF SCIENTIFIC INSTRUMENTS, vol. 85, no. 4, 2014-04
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