Reconstructing longitudinal strain pulses using time-resolved x-ray diffraction

被引：10

作者：

Gao, Y. ^{[1
]}

Chen, Z. ^{[1
]}

Bond, Z. ^{[1
]}

Loether, A. ^{[1
]}

Howard, L. E. ^{[1
]}

LeMar, S. ^{[1
]}

White, S. ^{[1
]}

Watts, A. ^{[1
]}

Walker, B. C. ^{[1
]}

DeCamp, M. F. ^{[1
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 01期

基金：

美国国家科学基金会;

关键词：

DYNAMICAL THEORY; GENERATION; PROPAGATION; CRYSTAL; PHONONS; SYNCHROTRON; PROTEIN; GOLD;

D O I：

10.1103/PhysRevB.88.014302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-resolved x-ray diffraction is a very powerful tool for visualizing transient one-dimensional crystalline strains, ranging from crystal growth to shock wave production. In this work, we use picosecond x-ray diffraction to visualize transient strain formation from nanometer-scaled laser-excited gold films into crystalline substrates. We show that there is a direct correspondence between the measured time-resolved x-ray diffraction pattern and the transient acoustic wave, providing a straightforward method to make a reconstruction of the transient strain. In addition, we discuss real-world experimental constraints that place limits on the validity of the reconstructed transient acoustic wave.

引用

页数：10

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