OBSERVATION OF X-RAY SPECKLE BY COHERENT SCATTERING AT GRAZING-INCIDENCE

被引：51

作者：

CAI, ZH

LAI, B

YUN, WB

MCNULTY, I

HUANG, KG

RUSSELL, TP

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

[2] IBM CORP,DIV RES,ALMADEN RES CTR,SAN JOSE,CA 95120

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.73.82

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed x-ray speckle at grazing incidence from gold-coated films of symmetric diblock copolymers of polystyrene (PS) and polymethylmethacrylate (PMMA). The polymer films consisted of micron-sized islands on a uniform surface. Coherent 6-keV photons were selected by monochromatizing and collimating the x-ray beam from a bending magnet synchrotron source. The visibility of the speckle patterns was enhanced with increasing degrees of spatial coherence of the photons. Speckles due to coherent scattering from islands with length scales up to 100 mum were clearly identified.

引用

页码：82 / 85

页数：4