Author:
Chen Xiao-Hu ,Wang Xiao-Fang ,Zhang Wei-Wei ,Wang Wen-Hui ,
Abstract
To image a large-size object with a high spatial resolution in a kiloelectronvolt (keV) X-ray range, a method is proposed to analyze and simulate the imaging of an extended X-ray source by a Fresnel phase zone plate (FPZP), based on the translational invariance of the point spread function in a 1 mm square area on the objective plane. Using this method, the imaging of an extended source of a different size is simulated under a typical experimental condition of image-to-source magnification of 10 for an FPZP of an outmost zone width of 0.35 μm. The results show that the image contrast decreases with the increase of the source size, and the zeroth-order and the minus first-order diffractions of the FPZP contribute mainly to the image background enhancement and the contrast decrease. The spatial resolution to the objective plane is also found to be reduced. For a 1-mm-square-shape source with a sinusoidal-distribution intensity modulation of contrast 1, the image modulation contrast is below 0.4, and the spatial resolution is 0.75 μm.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Reference15 articles.
1. Lindl J D, Amendt P, Berger R L, Glendinning S G, Glenzer S H, Haan S W, Kauffman R L, Landen O L, Sute L J 2004 Phys. Plasmas 11 339
2. Fujioka S, Shiraga H, Nishikino M, Shigemori K, Sunahara A, Nakai M, Azechi H, Nishihara K, Yamanaka K 2003 Phys. Plasmas 10 4784
3. Xiang Z L, Yu C X 1982 High Temperature Plasma Diagnostics (vol.2) (Shanghai: Shanghai Science and Technology Press) pp206-207 (in Chinese) [项志遴, 俞昌旋 1982 高温等离子体诊断技术(下册) (上海:上海科学技术出版社) 第206–207页]
4. Marshall F J, Bennett G R 1999 Rev. Sci. Instrum. 70 617
5. Wang X F, Wang J Y 2011 Acta Phys. Sin. 60 025212 (in Chinese) [王晓方, 王晶宇 2011 物理学报 60 025212]
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