Analysis for extraction and bunching of ion beam from spherical reflex triode
Technical Report
·
OSTI ID:5726042
An analysis was developed for the intense ion beam which is extracted from a spherical reflex triode. The basic equations used are the Poisson equation for the electric potential and the conservation equations of energies for the ion and electron velocities. According to the asymptotic solution, the extracted ion-beam-current density is proportional to the 3/2 power of the voltage imposed on the triode. This dependence of the current density on the voltage is improved to the power of 1.6 by the numerical analysis. A special time-dependence of the ion-beam power at the target surface is required for an optimal implosion of the target. Using the bunching theory for the ion beam, a numerical derivation of an optimal time-dependence of the voltage imposed on the triode is presented. Asymptotic forms are also obtained analytically for the voltage.
- Research Organization:
- Nagoya Univ. (Japan). Inst. of Plasma Physics
- OSTI ID:
- 5726042
- Report Number(s):
- N-79-20868
- Country of Publication:
- United States
- Language:
- English
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