Laser plasma interactions and thermonuclear fusion

Jha, Sudhanshu S. (1976) Laser plasma interactions and thermonuclear fusion Indian Journal of Physics, 50 . pp. 179-198. ISSN 0019-5480

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The physical processes involved in the absorption of laser energy and heating of a pellet plasma are reviewed. It is shown that induced parametric temporal instabilities, in which large amplitude collective plasma waves and sound waves are created by the laser beam of frequency w near the plasma frequency wp(r), play the dominant role in heating the pellet. With presently attainable laser-beam energies, in order to satisfy the Lawson breakeven condition, and to produce thermonuclear energy, it is necessary to precompress solid deuterium tritium pellets by a factor 103-104. The gain factor for the new laser-driven impiosion and self-heating scheme in which the generated a-particles are absorbed in the pellet itself has been calculated. Theoretically, it is shown that a fusion reactor based on this scheme is feasible, but practical difficulties still remain to be tackled.

Item Type:Article
Source:Copyright of this article belongs to Indian Association for the Cultivation of Science.
ID Code:97547
Deposited On:03 Mar 2013 06:59
Last Modified:03 Mar 2013 06:59

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