The theory of final focusing of intense light ion beams

Technical Report · Wed Oct 26 00:00:00 EDT 1988

OSTI ID:6932018

Watrous, J J; Ottinger, P F; Mosher, D

Efficient transport of the high power light ion beams of interest to inertial confinement fusion experiments may require the use of large radius transport channels. The mismatch in the radii of the transported ion beam and the ICF target requires that the beam be focused following large radius transport. A theoretical description of intense light ion beam focusing with a z-discharge plasma is presented. The theory is based on a Vlasov equation description of a fully charged and current neutralized ion beam, neglecting any angular momentum of the beam ions. An initial ion beams phase space distribution with adjustable parameters is considered so that its effect upon the phase space distribution at the focal plane can be analyzed. A numerical code is used to analyze the effect of angular momentum on the focusing properties of the final focusing cell. The theoretical analysis indicates that the proposed focusing method is viable. The numerical analysis indicates that even if beam ions have a significant amount of angular momentum, the beam can still be focused as indicated by the zero angular momentum theory. 24 refs., 17 figs.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• DOE Contract Number: AI03-79DP40092
• OSTI ID: 6932018
• Report Number(s): NRL-MR-6299; ON: DE89003513
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ION BEAMS
FOCUSING
ANGULAR MOMENTUM
BEAM TRANSPORT
BOLTZMANN-VLASOV EQUATION
INERTIAL CONFINEMENT
NUMERICAL ANALYSIS
PHASE SPACE
BEAMS
CONFINEMENT
DIFFERENTIAL EQUATIONS
EQUATIONS
MATHEMATICAL SPACE
MATHEMATICS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA CONFINEMENT
SPACE
700208* - Fusion Power Plant Technology- Inertial Confinement Technology