Plasma heating by energetic particles
Plasma heating by energetic particles
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DOI：
10.1088/0029-5515/11/5/006
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发表时间：
1971-10
期刊：
影响因子：
3.3
通讯作者：
D. Sigmar;G. Joyce
中科院分区：
文献类型：
--
作者：
D. Sigmar;G. Joyce
计算了稀薄高能试验粒子与多粒子高温等离子体的相互作用。Balescu-Lenard动力学方程用于通过介电常数包括集体效应。对近距离碰撞进行了量子修正。该理论首先应用于慢化的聚变出生的α粒子在镜约束等离子体和理论和数值计算结果进行了比较，以前的治疗和corrections. In托卡马克等离子体的大部分α粒子的能量进入电子和热化时间是有点大于等离子体的寿命，但加热仍然可以是实质性的。通过注入高能中性粒子加热类托卡马克等离子体在注入能量≤ 70 keV时是有效的，当注入粒子密度达到等离子体密度的1%时，可能使离子温度加倍。对于解析估计，一个简单的二元碰撞模型注入加热。
The interaction of a tenuous energetic test-particle species with a multispecies high temperature plasma is calculated. The Balescu-Lenard kinetic equation is used in order to include collective effects through the dielectric constant. Quantum corrections are made for close collisions. The theory is first applied to the slowing down of fusion born alpha particles in a mirror-confined plasma and theory and numerical results are compared to previous treatments and corrections are found. In Tokamak-like plasmas most of the alpha-particle energy goes into the electrons and the thermalization time is somewhat larger than the plasma lifetime but heating can nevertheless be substantial. Heating of a Tokamak-like plasma by injection of energetic neutrals is shown to be effective at injection energies ≤ 70 keV, possibly doubling the ion temperature when the injected particle density reaches 1% of the plasma density. For analytic estimates, a simple binary collision model for injection heating is given.