Abstract
WHEN a high-power laser beam is focused on to a material target, a small inertially confined plasma is generated near the target surface. Theoretical work by Basov and Krokhin1,2, verified by Dawson3, suggests that very hot plasmas (∼107 °K) can ultimately be produced in this way. A spectroscopic investigation of plasmas generated by a small Q-switched ruby laser has already been reported4. Further experiments have now been carried out using a larger Q-switched neodymium glass laser, and an estimate of the electron temperature attained in a carbon plasma is reported in this communication. Other results will be described in detail elsewhere.
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References
Basov, N. G., and Krokhin, O. N., Proc. Third Intern. Conf. Quantum llectronics, 1374 (Columbia, New York, 1964).
Basov, N. G., and Krokhin, O. N., Soviet Physics, J.E.T.P., 19, 123 (1964).
Dawson, J. M., Phys. Fluids, 7, 981 (1964).
Archbold, E., Harper, D. W., and Hughes, T. P., Brit. J. App. Phys., 15, 1321 (1964).
Kaufman, S., and Williams, R. V., Nature, 182, 557 (1958).
Williams, R. V., and Kaufman, S., Proc. Phys. Soc., 75, 329 (1960).
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ARCHBOLD, E., HUGHES, T. Electron Temperature in a Laser-heated Plasma. Nature 204, 670 (1964). https://doi.org/10.1038/204670a0
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DOI: https://doi.org/10.1038/204670a0
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