Dedicated experiments were conducted in mixed H-D plasmas in JET to demonstrate the effiiciency of the 3-ion ICRF scheme for plasma heating, relying on injected fast NBI ions as resonant ion species. Strong core localization of the RF power deposition in the close vicinity of the ion-ion hybrid layer was achieved, resulting in an efficient plasma heating, generation of energetic D ions, strong enhancement of the neutron rate and observation of Alfvenic modes. A consistent physical picture that emerged from a range of fast-ion measurements at JET, including neutron and gamma-ray measurements, a high-energy neutral particle analyzer and MHD mode localization analysis, is presented. The possibility to moderate the fast-ion energies with the ratio PICRF/PNBI and the choice of the NBI injectors is demonstrated. An outlook of possible applications of the 3-ion schemes, including a recent example of its use in mixed D-3He plasmas in JET and promising schemes for D-T plasmas, are presented.

中文翻译：

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在 JET-ILW 的混合 HD 等离子体中使用 3 离子 ICRF+NBI 方案进行等离子体加热和产生高能 D 离子

在 JET 中的混合 HD 等离子体中进行了专门的实验，以证明 3 离子 ICRF 方案用于等离子体加热的效率，依赖于注入的快速 NBI 离子作为共振离子种类。在离子-离子混合层附近实现了射频功率沉积的强核心定位，从而实现了有效的等离子体加热、高能 D 离子的产生、中子速率的强烈增强和阿尔芬尼模式的观察。展示了在 JET 的一系列快离子测量中出现的一致物理图片，包括中子和伽马射线测量、高能中性粒子分析仪和 MHD 模式定位分析。证明了通过 PICRF/PNBI 比率和 NBI 注入器的选择来调节快离子能量的可能性。