The paper deals with the simulation of neutral particle spectra obtained in JET with an array of four passive neutral particle analysers during discharges with applied stationary or modulated radiofrequency power in the ion cyclotron range of frequencies for a deuterium plasma with hydrogen minority. The distribution function of the hydrogen ions has been computed using a one-dimensional Fokker-Planck equation describing wave-particle interaction by a quasi-linear diffusion term in velocity space. Both stationary and oscillating solutions of the Fokker-Planck equation have been worked out and the computed hydrogen fluxes have been found to be in very good agreement with the measured ones. In this context, the problems arising in the deduction of the power deposition profiles in modulated discharges are discussed. The profiles of power delivered to the electrons and the bulk ions have been obtained. It is shown that no adjustable parameters need to be introduced and that the main source of error lies in the uncertainty in the knowledge of the ion density.
本论文涉及对JET装置中一组四个被动中性粒子分析仪在施加稳态或调制射频功率（离子回旋频率范围）于氘等离子体中的氢 minority 时获得的中性粒子谱进行模拟。氢离子的分布函数已通过一维Fokker-Planck方程计算，该方程描述了速度空间中由准线性扩散项引起的波-粒子相互作用。Fokker-Planck方程的稳态解和振荡解均已求出，计算得到的氢通量与测量值吻合良好。在此背景下，讨论了从调制放电中推断功率沉积分布时遇到的问题。电子和本体离子的功率沉积分布已获得。结果表明，无需引入可调参数，误差的主要来源在于离子密度知识的不确定性。