Microjet formation and hard x-ray production from a liquid metal target irradiated by intense femtosecond laser pulses
Idioma
en
Article de revue
Este ítem está publicado en
Physics of Plasma. 2014, vol. 21, n° 9, p. 093103
AIP Publishing
Resumen en inglés
By using a liquid metal as a target one may significantly enhance the yield of hard x-rays with a sequence of two intense femtosecond laser pulses. The influence of the time delay between the two pulses is studied ...Leer más >
By using a liquid metal as a target one may significantly enhance the yield of hard x-rays with a sequence of two intense femtosecond laser pulses. The influence of the time delay between the two pulses is studied experimentally and interpreted with numerical simulations. It was suggested that the first arbitrary weak pulse produces microjets from the target surface, while the second intense pulse provides an efficient electron heating and acceleration along the jet surface. These energetic electrons are the source of x-ray emission while striking the target surface. The microjet formation is explained based on the results given by both optical diagnostics and hydrodynamic modeling by a collision of shocks originated from two distinct zones of laser energy deposition.< Leer menos
Orígen
Importado de HalCentros de investigación