Nonuniformities in laser-ablated plasma
Conference
·
OSTI ID:6758558
With long pulse-duration (4 nsec), moderate intensity (approx. = 10/sup 13/ W/cm/sup 2/) Nd-laser illumination of planar targets, evidence is found in images of x-ray, 3/2 ..omega../sub 0/ and 2 ..omega../sub 0/ emission for filamentation of the incident beam. Calculations indicate that this may be due to thermal self-focusing of hot spots in the laser. X-ray images show spots and spicules, jets of material flow which appear to follow the fluid flow from the target. These may be attributed to the presence of microscopic impurities on our laser-irradiated foil targets.
- Research Organization:
- Naval Research Lab., Washington, DC (USA); Mission Research Corp., Alexandria, VA (USA)
- DOE Contract Number:
- AI08-79DP40092
- OSTI ID:
- 6758558
- Report Number(s):
- NRL-MR-4983; CONF-810576-5; ON: DE83005538
- Country of Publication:
- United States
- Language:
- English
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