Observation of ion wave decay products of Langmuir waves generated by stimulated Raman scattering in ignition scale plasmas

Thomson scattering has been used to measure the time resolved spectrum of ion wave decay products from two instabilities which can limit the growth of stimulated Raman scattering (SRS). This experiment detected ion wave decay products far above the thermal level and demonstrates that SRS produced Langmuir waves undergo the Langmuir decay instability in ignition relevant plasmas. Product waves of the electromagnetic decay instability were not detected.

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