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Proceedings Paper

X-ray emission from solid plasmas generated by femtosecond high-intensity laser pulses
Author(s): Sudeep Banerjee; Riju C. Issac; P. P. Rajeev; L. C. Tribedi; G. Ravindra Kumar
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Paper Abstract

We report observations of intense x-ray emission from solid targets excited by Ti:sapphire laser pulse of 1-fs duration and intensities up to 1016 W cm-2. We measured characteristic and continuum emission. X-ray emission and plasmas temperature were studied for s, p, and circular polarization states of the input laser beam. We find that circularly polarized light generates the least electron temperature compared to s and p polarizations. To complement these observations, single beam reflection from laser produced plasmas as measured. P-polarized light is reflected least, followed by circular and s-polarized light in that order. We believe that the circularly polarized light coupled into channels other than the heating of electrons even though it is absorbed more than the s-polarized case. We have also carried out x-ray emission studies with longer input pulses and find that the spectrum is mostly line emission with hardly any continuum.

Paper Details

Date Published: 11 January 2000
PDF: 7 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375158
Show Author Affiliations
Sudeep Banerjee, Tata Institute of Fundamental Research (India)
Riju C. Issac, Tata Institute of Fundamental Research (India)
P. P. Rajeev, Tata Institute of Fundamental Research (India)
L. C. Tribedi, Tata Institute of Fundamental Research (India)
G. Ravindra Kumar, Tata Institute of Fundamental Research (India)

Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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