Transient crystalline superlattice generated by a photoacoustic transducer | Zendy

Aaron Loether | Zendy; Yuan Gao | Zendy; Z. Chen | Zendy; M. F. DeCamp | Zendy; Eric M. Đufresne | Zendy; Donald A. Walko | Zendy; Haidan Wen | Zendy

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Transient crystalline superlattice generated by a photoacoustic transducer

Author(s) -

Aaron Loether,

Yuan Gao,

Z. Chen,

M. F. DeCamp,

Eric M. Đufresne,

Donald A. Walko,

Haidan Wen

Publication year - 2014

Publication title -

structural dynamics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.415

H-Index - 29

ISSN - 2329-7778

DOI - 10.1063/1.4867494

Subject(s) - picosecond , superlattice , ultrashort pulse , transient (computer programming) , materials science , scattering , transducer , optics , substrate (aquarium) , optoelectronics , photoacoustic imaging in biomedicine , amplitude , physics , acoustics , computer science , laser , oceanography , geology , operating system

Designing an efficient and simple method for modulating the intensity of x-ray radiation on a picosecond time-scale has the potential to produceultrafast pulses of hardx-rays. In this work, we generate a tunable transient superlattice, in an otherwiseperfect crystal, by photoexciting a metal film on a crystalline substrate. The resulting transientstrain has amplitudes approaching 1%, wavevectors greater than 0.002 Å−1, and lifetimes approaching 1 ns. This method has thepotential to generate isolated picosecond x-ray bursts with scattering efficiencies in excess of10%

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