Radiation effects of hydrogen beam injection into a boron-11 tokamak plasma

Abstract

Injection of a hydrogen neutral beam (H) is studied into the boron-11 (11B) fusion tokamak plasma. The conclusions show that the most desirable injection energy of the hydrogen beam, , into pure 11B target plasma is 5 MeV for performing the H11B reaction with the maximum fusion energy multiplication factor (). This factor for decreases with the increase in and increases with the electron temperature. A change in the thermal ion mixture had only a small effect on . decreases when the effect of radiation losses is considered through bremsstrahlung and synchrotron powers . The difference between the curves of and the fusion power is minimized in the ion temperature range 300–400 keV. A higher ion-to-electron temperature ratio is required to obtain higher . increases with an increase in plasma beta. Increasing the ratio of the fusion power to each radiation power can enhance the value.