Sacrificial tamper slows down sample explosion in FLASH diffraction experiments.
Phys Rev Lett
; 104(6): 064801, 2010 Feb 12.
Article
em En
| MEDLINE
| ID: mdl-20366823
ABSTRACT
Intense and ultrashort x-ray pulses from free-electron lasers open up the possibility for near-atomic resolution imaging without the need for crystallization. Such experiments require high photon fluences and pulses shorter than the time to destroy the sample. We describe results with a new femtosecond pump-probe diffraction technique employing coherent 0.1 keV x rays from the FLASH soft x-ray free-electron laser. We show that the lifetime of a nanostructured sample can be extended to several picoseconds by a tamper layer to dampen and quench the sample explosion, making <1 nm resolution imaging feasible.
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Base de dados:
MEDLINE
Assunto principal:
Difração de Raios X
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article