Backward Raman compression of x-rays in metals and warm dense matters

Abstract

Experimentally observed decay rate of the long wavelength Langmuir wave in metals and dense plasmas is orders of magnitude larger than the prediction of the prevalent Landau damping theory. The discrepancy is explored, and the existence of a regime where the forward Raman scattering is stable and the backward Raman scattering is unstable is examined. The amplification of an x-ray pulse in this regime, via the backward Raman compression, is computationally demonstrated, and the optimal pulse duration and intensity is estimated.

4 pages, 3 figures, submitted to PRE

References in corpus (2)

• Suppression of Landau damping via electron band gap
• Plasmon band gap generated by intense ion acoustic waves

Cited by in corpus (6)

• Two stream instabilities in degenerate quantum plasmas
• Hard x-ray or gamma ray laser by a dense electron beam
• Pondermotive potential and Backward Raman Scattering in dense quantum plasmas
• X-ray Raman compression via two-stream instability in dense plasmas
• Forward Raman compression via photonic band gap in metals or warm dense matter
• Entropy Maximization and Instability of Uniformly Magnetized Plasma