A study of picosecond laser–solid interactions up to 1019 W cm−2

Autor:	Colin N. Danson, A. E. Dangor, Peter Norreys, Paul Lee, Michael E. Glinsky, B. A. Hammel, Michael Tatarakis, A. R. Bell, F. N. Beg, AP Fews
Rok vydání:	1997
Předmět:	Physics Range (particle radiation) law Bremsstrahlung Electron temperature Plasma diagnostics Electron Atomic physics Condensed Matter Physics Absorption (electromagnetic radiation) Laser Collimated light law.invention
Zdroj:	Physics of Plasmas. 4:447-457
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.872103
Popis:	The interaction of a 1053 nm picosecond laser pulse with a solid target has been studied for focused intensities of up to 1019 W cm-2. The maximum ion energy cutoff Emax (which is related to the hot electron temperature) is in the range 1.0-12.0 MeV and is shown to scale as Emax≈I1/3. The hot electron temperatures were in the range 70-400 keV for intensities up to 5 × 1018 W cm-2 with an indication of a high absorption of laser energy. Measurements of x-ray/y-ray bremsstrahlung emission suggest the existence of at least two electron temperatures. Collimation of the plasma flow has been observed by optical probing techniques. ©7997 American Institute of Physics.
Databáze:	OpenAIRE
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