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Ordinary waves in relativistic plasmas

Lj Nikolic, S Pesic1998年Plasma Physics and Controlled FusionIF 2.2出版社

The propagation and absorption of ordinary waves in fully relativistic plasma are investigated. Several interesting effects introduced by the relativistic mass increase associated with an increase in the electron temperature are examined. In particular, it is found that the cutoff density of ordinary waves increases significantly as the electron temperature increases. The effects of anomalous wave dispersion, which appear near the fundamental electron cyclotron frequency and its second and third harmonic, are greatest for low temperatures and subsist up to intermediate temperatures ( keV). An efficient damping of ordinary waves is obtained in a wide temperature range. The harmonic structure of the absorption profiles and the effects of anomalous dispersion disappear almost simultaneously at high electron temperatures. The results obtained may have important implications for the wave absorption and in particular, for emission in relativistic plasmas.

日本語訳

完全相対論的プラズマにおける常波の伝播と吸収を調査した。電子温度の増加に伴う相対論的質量増加によって導入されるいくつかの興味深い効果を検討する。特に、常波の遮断密度が電子温度の増加とともに有意に上昇することが見出された。基本電子サイクロトロン周波数およびその第二・第三高調波付近に現れる異常分散の効果は、低温で最も顕著であり、中間温度(keV)まで持続する。広い温度範囲において、常波の効率的な吸収が達成される。吸収プロファイルの高調波構造と異常分散の効果は、高温においてほぼ同時に消失する。これらの結果は、相対論的プラズマにおける波の吸収、特に放射過程に関して重要な示唆を与えるものである。

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Relativistic plasma
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