ISSN:
1432-0649
Keywords:
52.25.Nr
;
52.40.Nk
;
52.50.Jm
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The influence of a prepulse on soft X-ray emission in the range of 50–200 Å from an aluminium plasma produced by 130 fs Ti: Sapphire laser pulses with an intensity of 1014 W/cm2 at normal incidence is studied. An ultrashort prepulse with an intensity of 1013 W/cm2 significantly enhances soft X-ray emission when there is a long time separation ( 〉 100 ps) between the prepulse and an intense main pulse. It is also observed for the first time that a prepulse with a short pulse time separation can slightly reduce soft X-ray emission, contrary to the previous work done using 248 nm laser pulses. This can be explained qualitatively in terms of the dependence of absorption on the length scale.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01095257
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