南华大学学报（自然科学版）
南華大學學報（自然科學版）
남화대학학보（자연과학판）
JOURNAL OF NANHUA UNIVERSITY(SCIENCE AND TECHNOLOGY)
2014年
1期
5-8
,共4页
Alfvén波%粒子模拟%共振加热
Alfvén波%粒子模擬%共振加熱
Alfvén파%입자모의%공진가열
Alfvén wave%particle simulation%resonance heating
采用粒子模拟( PIC)方法，研究沿背景磁场传播的Alfvén波与均匀磁化等离子体共振相互作用的过程。模拟结果表明：共振加热过程中，在平行和垂直于背景磁场的方向上，质子温度均得到增加，且垂直方向上的温度增加更为明显，等离子体温度呈现各向异性；同时，不同的波频率影响波粒子加热效果，并且一定范围内，共振加热期间，共振波频率越大，加热效果越好。而经过随机加热后，粒子动力学温度的最大值与波频率无关，仅仅与波的相速度相关。
採用粒子模擬( PIC)方法，研究沿揹景磁場傳播的Alfvén波與均勻磁化等離子體共振相互作用的過程。模擬結果錶明：共振加熱過程中，在平行和垂直于揹景磁場的方嚮上，質子溫度均得到增加，且垂直方嚮上的溫度增加更為明顯，等離子體溫度呈現各嚮異性；同時，不同的波頻率影響波粒子加熱效果，併且一定範圍內，共振加熱期間，共振波頻率越大，加熱效果越好。而經過隨機加熱後，粒子動力學溫度的最大值與波頻率無關，僅僅與波的相速度相關。
채용입자모의( PIC)방법，연구연배경자장전파적Alfvén파여균균자화등리자체공진상호작용적과정。모의결과표명：공진가열과정중，재평행화수직우배경자장적방향상，질자온도균득도증가，차수직방향상적온도증가경위명현，등리자체온도정현각향이성；동시，불동적파빈솔영향파입자가열효과，병차일정범위내，공진가열기간，공진파빈솔월대，가열효과월호。이경과수궤가열후，입자동역학온도적최대치여파빈솔무관，부부여파적상속도상관。
Using the test particle simulation method,the interactions between the uniform magnetized plasmas and Alfvén waves propagating along background magnetic field are studied. The results show that, in the heating process, the proton temperature in parallel and perpendicular directions of the background magnetic field are elevated. The increase of temperature in vertical direction is more obvious than that in the parallel direction,and the temperature of plasmas exhibits anisotropy. Meanwhile, the frequencies of waves have an effect on the heating. The effect of resonance heating is better than that of non-resonance heating. Moreover,in resonance heating period within a certain range,the frequency is lar-ger,the heating effect is better. After stochastic heating,the maximum kinetic temperature of ions is only dependent on phase velocity of the Alfvén waves and has no relevance with the frequency of Alfvén waves.
