Probing the Transverse Coherence of an Undulator X-Ray Beam Using Brownian Particles

被引：38

作者：

Alaimo, M. D. ^{[1
,2
]}

Potenza, M. A. C. ^{[1
]}

Manfredda, M. ^{[1
]}

Geloni, G. ^{[3
]}

Sztucki, M. ^{[2
]}

Narayanan, T. ^{[2
]}

Giglio, M. ^{[1
]}

机构：

[1] Univ Milan, Dipartimento Fis, I-20133 Milan, Cnism, Italy

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Deutsch Elektronen Synchrotron & European XFEL Gm, D-22607 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 19期

关键词：

SYNCHROTRON-RADIATION; NEAR-FIELD; INTERFEROMETRY; INTERFERENCE; FLUCTUATIONS; LIGHT;

D O I：

10.1103/PhysRevLett.103.194805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a novel method to map the two-dimensional transverse coherence of an x-ray beam using the dynamical near-field speckles formed by scattering from colloidal particles. Owing to the statistical nature of the method, the coherence properties of synchrotron radiation from an undulator source is obtained with high accuracy. The two-dimensional complex coherence function is determined at the sample position and the imaging optical scheme further allowed us to evaluate the coherence factor at the undulator output despite the aberrations introduced by the focusing optics.

引用

页数：4

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