Short-pulse-laser-heated plasma experiments
The interaction between time-tailored, high-intensity laser radiation and spherical light-element targets is investigated. Simultaneous measuremerts of the laser plasma electron temperature, charged-particle distribution, absorbed energy, neutron yields, and backscattered light intensity and spectra were made. For 100 ps, wide laser pulses focused to intensities ranging between 3 x 10/sup 15/ and 2 x 10/sup 16/ W/cm/sup 2/ on 150 to 200- mu m diameter LiD and C/sub 36/ D/sub 74/ targets, plasmas with electron temperatures up to 1.2 keV and target- generated yields of up to 4 x 10/sup 4/ neutrons are produced. The absorption can be accounted for by inverse bremsstrahlung and no significant contributions due to parametric instabilities are observed. No more than 10/sup -1/ of the incident laser energy is back-reflected into spectral components at omega /sub L/ , (3/2) omega /sub L/, and 2 omega /sub L/. (auth)
- Research Organization:
- Univ. of Rochester, NY
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-29-017409
- OSTI ID:
- 4352606
- Journal Information:
- Nucl. Fusion, v. 13, no. 6, pp. 829-838, Journal Name: Nucl. Fusion, v. 13, no. 6, pp. 829-838; ISSN NUCFA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
*HYDROCARBONS-- LASER- PRODUCED PLASMA
*LASER-PRODUCED PLASMA-- NEUTRON SPECTRA
*LITHIUM DEUTERIDES-- LASER-PRODUCED PLASMA
*PLASMA HEATING-- LASER-RADIATION HEATING
BREMSSTRAHLUNG
ELECTRON TEMPERATURE
LASER RADIATION
N70100 --Physics--Controlled Thermonuclear Research--Confinement & Heating
N70600* --Physics--Controlled Thermonuclear Research-- Production
PLASMA DENSITY
SPHERICAL CONFIGURATION