The quantitative effect of anode plasma on a pinched electron beam from particle in cell modelling of a self magnetic pinch diode

Author

Martin, P.N. ; Threadgold, J.R. ; Welch, D.

Author_Institution

Atomic Weapons Establ., Reading, UK

fYear

2011

fDate

19-23 June 2011

Firstpage

1453

Lastpage

1458

Abstract

The effect of a proton or carbon anode plasma on the pinched electron beam present in a self magnetic pinch (SMP) diode has been investigated using the Large Scale Plasma (LSP*) code. The resultant plasma generated by the fragmentation of desorbed material is described together with the simulation parameters used. The probability distributions of radial charge, macro particle energy and macro particle velocity of the electron beam are described as a function of emission region and position across the A-K gap. The conclusions of this investigation are that the presence of the anode plasmas change both the impedance of the diode as well as the quantitative evolution of the electron beam. The energy and average electron angle of the electron beam are presented and the interaction with the plasma-front discussed.

Keywords

desorption; pinch effect; plasma collision processes; plasma diodes; plasma simulation; plasma transport processes; probability; A-K gap; average electron angle; carbon anode plasma; desorbed material; electron beam energy; emission region; large scale plasma code; macro particle energy distribution; macro particle velocity distribution; particle in cell modelling; pinched electron beam; probability distribution; proton anode plasma; radial charge distribution; self magnetic pinch diode; simulation parameters; Anodes; Atomic beams; Atomic measurements; Cathodes; Plasmas; Probes; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference (PPC), 2011 IEEE

Conference_Location

Chicago, IL

ISSN

2158-4915

Print_ISBN

978-1-4577-0629-5

Type

conf

DOI

10.1109/PPC.2011.6191662

Filename

6191662