Effect of rise time and pulse width on the transport and interaction of a 1 MeV, 15 kA relativistic electron beam in low pressure argon and hydrogen

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Phys Fluids B; (United States)

DOI:https://doi.org/10.1063/1.858918· OSTI ID:5891403

Iyyengar, S K; Rohatgi, V K

A numerical study of the effect of rise time (10--30 nsec) and pulse width (30--100 nsec) on the transport and interaction of a 1 MeV, 15 kA relativistic electron beam (REB) in argon and hydrogen in the pressure range 0.05--1.0 Torr is reported. The computations have been carried out taking into account charge and current neutralization effects, plasma heating by return current, and two-stream instabilities. The results of the study show that charge transport increases for short rise times and longer pulse widths at the optimum pressure in the range 0.1--0.2 Torr. With a rise time of 30 nsec and a pulse width of 100 nsec, the 1 MeV, 15 kA REB generates a plasma with density 1--10/times/10/sup 21/ m/sup /minus/3/, an electron temperature of 4--20 eV, and transports with 90% efficiency at the optimum pressure.

• Research Organization: Plasma Physics Division, Bhabha Atomic Research Centre, Bombay 400085, India (IN)
• OSTI ID: 5891403
• Journal Information: Phys Fluids B; (United States), Journal Name: Phys Fluids B; (United States) Vol. 1:9; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARGON
BEAM INJECTION
BEAM-PLASMA SYSTEMS
BEAMS
DIMENSIONS
ELECTRON BEAM INJECTION
ELECTRON BEAMS
ELECTRON TEMPERATURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
HYDROGEN
INTERACTIONS
LEPTON BEAMS
MEDIUM VACUUM
MEV RANGE
MEV RANGE 01-10
NONMETALS
NUMERICAL SOLUTION
PARTICLE BEAMS
PLASMA
PLASMA DENSITY
PULSE RISE TIME
RARE GASES
RELATIVISTIC RANGE
TIMING PROPERTIES
WIDTH