Abstract
Stimulated Raman scattering (SRS) has been observed for various laser wavelengths and intensities, target materials, and target geometries in many recent experiments. At the same time, theoretical work has refined the calculation of thresholds and growth rates to be valid for low density and high temperature where kinetic effects are important and for totally underdense plasmas. Our measurements show that, although the predicted thresholds are within an order of magnitude of the observed thresholds, the scaling of the observed threshold with plasma parameters is not that of the theory. The spectra of Raman backscattered light are also in conflict with theoretical predictions but the inclusion of the wavelength dependence of thermal sources improves agreement. In particular the wavelength dependence of Langmuir wave fluctuations compares favorably with the data and is incorporated into the theory of SRS.
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References
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© 1986 Plenum Press, New York
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Berger, R.L., Busch, G.E., Gabl, E.F., Schroeder, R.J., Shepard, C.L., Tarvin, J.A. (1986). Stimulated Raman Scattering: Comparison of Theory and Experiment. In: Hora, H., Miley, G.H. (eds) Laser Interaction and Related Plasma Phenomena. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7335-7_28
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DOI: https://doi.org/10.1007/978-1-4615-7335-7_28
Publisher Name: Springer, Boston, MA
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