neutral beam injection
英[ˈnju:trəl bi:m inˈdʒekʃən]美[ˈnutrəl bim ɪnˈdʒɛkʃən]
To initiate a sustained fusion reaction, it is usually necessary to use many methods to heat the plasma, including RF heating, electron cyclotron resonance heating (ECRH), ion cyclotron resonance heating (ICRH), and neutral beam injection.