Plasma conditions for SRS benchmark.
SRS reflectivity vs pump intensity for the SRS benchmark profile of Fig. 1. The black circles and red squares are for PF3D and DEPLETE, respectively.
DEPLETE gain (black solid), NEWLIP gain (red dashed), and with no TS for (, black dots), for SRS benchmark. TS and volume bremsstrahlung noise enhance over for the smallest , while pump depletion suppresses for the larger two.
SBS benchmark profile.
SBS reflectivity for SBS benchmark profile. The squares are DEPLETE results, and the dashed line is an extension of the low- results.
SBS DEPLETE gain (black solid), NEWLIP gain (blue dashed), and without TS for (, black dotted), for SBS benchmark profile.
(a) SBS reflectivity for OMEGA experiments with CH gas fill and (described in text). Black circles are measured values, the blue solid curve is DEPLETE calculations with the nominal coupling , and the blue dashed curve is DEPLETE calculations with . (b) DEPLETE and PF3D SBS reflectivities for a similar configuration but . Black crosses are PF3D simulations, and the blue curves are the DEPLETE results as in (a).
Materials and laser beam cones for the NIF example.
Nominal intensity at best focus for NIF ignition design (“NIF example”), found by dividing the laser power per quad by the focal spot size. The peak intensity corresponds to /quad.
DEPLETE SRS and SBS ray-averaged reflectivities for the NIF example. Solid lines are the nominal case (reabsorption and unscaled), dashed lines are the nominal but no reabsorption of scattered light , and dotted lines are with reabsorption.
SRS streaked spectrum for NIF example, nominal case (, ).
SBS streaked spectrum for NIF example, nominal case (, ). The white-yellow streak from occurs in the Be ablator, while the weaker feature from 12 to occurs in the gas fill.
DEPLETE SRS spectrum at time for NIF example, smoothed over . The black solid and red dashed lines are computed with and without reabsorption of scattered light, respectively.
(a) Laser transmission for NIF example at (peak power): black solid curve is the nominal DEPLETE solution with pump depletion, red dashed curve is with just inverse-bremsstrahlung absorption, and black dotted curve is the DEPLETE solution with . (b) SBS (blue) and SRS (red) scattered intensities for the nominal DEPLETE solution. Calculation of intensity at a given is described in text.
SRS spectral density vs and , in decibels, at (peak power), for NIF example.
SBS spectral density vs and , in decibels, at (peak power), for NIF example.
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