Nonlinear stimulated Brillouin scattering in inhomogeneous plasmas
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Bibliographic record
Abstract
The combined effects of ion-acoustic nonlinearity and plasma inhomogeneity on a stimulated Brillouin scattering (SBS) are considered in the model of coupled Korteweg–de Vries (KdV) and electromagnetic wave equations. In the regime of linear ion-acoustic waves the results are in good agreement with the existing linear theories of SBS and demonstrate the regimes of both convective and absolute instabilities. New features of SBS saturation due to ion-acoustic nonlinearity and pump depletion in inhomogeneous plasmas are found. They include the scaling for saturated reflectivity, the transition from convective to absolute growth, and the temporal pulsations of the reflectivity coefficient. The autoresonance process is analyzed and its relevance to SBS for realistic plasma parameters is discussed.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it