期刊
PHYSICAL REVIEW E
卷 80, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.80.046409
关键词
damping; optical pumping; plasma density; plasma instability; plasma Langmuir waves; plasma light propagation; stimulated Raman scattering; thermal noise
资金
- NNSA [DE-FG52-04NA00139]
New powerful soft x-ray sources may be able to access intensities needed for backward Raman amplification (BRA) of x-ray pulses in plasmas. However, high plasma densities, needed to provide enough coupling between the pump and seed x-ray pulses, cause strong damping of the Langmuir wave that mediates energy transfer from the pump to the seed pulse. Such damping could reduce the coupling, thus making efficient BRA impossible. This work shows that efficient BRA can survive despite the Langmuir wave damping significantly exceeding the linear BRA growth rate. Moreover, the strong Langmuir wave damping can automatically suppress deleterious instabilities of BRA to the thermal noise. The class of quasitransient BRA regimes identified here shows that it may be feasible to observe x-ray BRA within available x-ray facilities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据