Propagation of intense plasma and ion beams across B-field in vacuum and magnetized plasma

摘要: This paper summarizes experimental results on the injection and transport of intense, wide cross-section H+ plasma (PB), ion beams (IB), in vacuum ambient across an applied B-field. The into magnetic confinement devices have potential to heat support current these systems (e.g., field-reversed configurations). translational energies PB IB ranged between Epb = 60 120 eV EIB keV, with temperatures densities range Tb ∼ 2 10 eV, nb 1012 1013 cm−3, 200 1010 1011 respectively. Compared earlier studies (Peter et al., 1979; Wessel 1988, 1990), this research extends parameter space higher beam (up 30 A/cm2) B-field strengths up 1.6 kG. were both about cm diameter at port, ratio specific energy energy, β, was 0.1 10. Ratios Larmor radius size, ρ, from 10−1 1 for IB, Cross propagation undeflected as a whole sharp increase (one order or more) density central core levels > kG accompanied by significant loss peripheral layers, “braking” preferential expansion along lines. did not differ substantially case without B-field, that is, no deflection whole, which could be due insufficient neutralization induced E-field inside PB. followed single particle trajectory simultaneous intensity any detectable bunching, indicating adequate shorting polarization IB.