Generation of hard x rays by femtosecond laser pulse interaction with solid targets in atmosphere.
Opt Lett
; 37(5): 884-6, 2012 Mar 01.
Article
en En
| MEDLINE
| ID: mdl-22378426
ABSTRACT
X ray radiation as high as 50 keV, including K(α) of Ba and Mo, have been observed from a solid target during the interaction of low energy ~0.65 mJ, 1 kHz 40 femtosecond laser pulses focused in air at atmospheric pressure. Energetic electrons generating such x rays are possibly produced when the field strength in laser pulse wake exceeds the runaway threshold in air. Two dimensional particle-in-cell simulations that include optical field ionization of air and elastic collisions support this mechanism.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Año:
2012
Tipo del documento:
Article
País de afiliación:
Japón