Charge exchange as a recombination mechanism in high-temperature plasmas
Charge exchange with neutral hydrogen is examined as a recombination mechanism for multi-charged impurity ions present in high-temperature fusion plasmas. At sufficiently low electron densities, fluxes of atomic hydrogen produced by either the injection of neutral heating beams or the background of thermal neutrals can yield an important or even dominant recombination process for such ions. Equilibrium results are given for selected impurity elements showing the altered ionization balance and radiative cooling rate produced by the presence of various neutral populations. A notable result is that the stripping of impurities to relatively non-radiative ionization states with increasing electron temperature can be postponed or entirely prevented by the application of intense neutral beam heating power. A time dependent calculation modelling the behavior of iron in recent PLT tokamak high power neutral beam heating experiments is also presented.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 5385060
- Report Number(s):
- PPPL-1633
- Country of Publication:
- United States
- Language:
- English
Similar Records
Experimental evidence of charge exchange recombination of highly ionized iron and titanium in Princeton Large Torus
Experimental evidence of charge-exchange recombination of highly ionized iron and titanium in Princeton large torus
Charge exchange ion temperature measurements during high power neutral beam injection on PLT
Technical Report
·
Thu Jan 31 19:00:00 EST 1980
·
OSTI ID:5702329
Experimental evidence of charge-exchange recombination of highly ionized iron and titanium in Princeton large torus
Journal Article
·
Thu Jul 31 20:00:00 EDT 1980
· Phys. Rev., A; (United States)
·
OSTI ID:5236807
Charge exchange ion temperature measurements during high power neutral beam injection on PLT
Technical Report
·
Sun Dec 31 23:00:00 EST 1978
·
OSTI ID:6236165
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
BEAM INJECTION
CHARGE EXCHANGE
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HYDROGEN
IMPURITIES
NEUTRAL ATOM BEAM INJECTION
NONMETALS
PLASMA
PLT DEVICES
RECOMBINATION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
BEAM INJECTION
CHARGE EXCHANGE
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HYDROGEN
IMPURITIES
NEUTRAL ATOM BEAM INJECTION
NONMETALS
PLASMA
PLT DEVICES
RECOMBINATION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS