Electronic recombination in a nonequilibrium plasma
Identifieur interne : 002219 ( Main/Exploration ); précédent : 002218; suivant : 002220Electronic recombination in a nonequilibrium plasma
Auteurs : J. Vogel [Allemagne] ; C. Toepffer [Allemagne]Source :
- Nuclear Inst. and Methods in Physics Research, A [ 0168-9002 ] ; 1988.
English descriptors
- Teeft :
- Academic press, Anisotropic, Anisotropic nonequilibrium plasma, Atomic physics, Brown university, Coefficient, Collective effects, Collective modes, Cooler plasma, Cooling area, Cooling section, Cutoff, Dielectric, Dielectric tensor, Dispersion relation, Dominant process, Electric field, Electromagnetic processes, Electronic cooling, Electronic recombination, Imaginary part, Ion, Kinetic theory, Longitudinal modes, Magnetic field, Magnetic fields, Maxwell equations, Momentum spread, Nonequilibrium, Nonequilibrium plasma, Nonideal plasmas, Other hand, Particle densities, Plasma, Plasma effects, Plasma electrodynamics, Plasma frequency, Principal quantum number, Recombination, Recombination coefficient, Recombination process, Recombination rate, Recombination rates, Recombined pairs, Relative motion, Rest frame, Rest system, Second term, Stark effect, State vector, Storage ring, Tensor, Theoretischen physik, Thermal motion, Thermal velocities, Toepffer, Transient fields, Transition frequencies, Transition probability, Typical energy shift, Vogel.
Abstract
Abstract: We study the recombination in a neutral, fully ionized, anisotropic nonequilibrium plasma with applications to electronic cooling of heavy ion beams in a storage ring. These plasmas are characterized by low particle densities and extreme temperature differences between the free electrons and ions. Starting from a microscopic master equation for the coefficient of recombination, collective effects and three body recombination processes are considered. Because of the small density only photon-like collective modes are important for the induced recombination. As the ion temperature is high initially, it is necessary to include the movement of the ions in the calculation of the recombination coefficient. In a cooler plasma recombination into the high-lying states is cut off by the Stark effect due to the transient electric fields which appear after a Lorentz transformation of the external transversal magnetic fields to the rest frame of the beam.
Url:
DOI: 10.1016/0168-9002(88)90744-9
Affiliations:
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Toepffer</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institut für Theoretische Physik, Universität Erlangen, Erlangen</wicri:regionArea><placeName><settlement type="city">Erlangen</settlement><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Moyenne-Franconie</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Nuclear Inst. and Methods in Physics Research, A</title><title level="j" type="abbrev">NIMA</title><idno type="ISSN">0168-9002</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1988">1988</date><biblScope unit="volume">272</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="639">639</biblScope><biblScope unit="page" to="644">644</biblScope></imprint><idno type="ISSN">0168-9002</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0168-9002</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Academic press</term><term>Anisotropic</term><term>Anisotropic nonequilibrium plasma</term><term>Atomic physics</term><term>Brown university</term><term>Coefficient</term><term>Collective effects</term><term>Collective modes</term><term>Cooler plasma</term><term>Cooling area</term><term>Cooling section</term><term>Cutoff</term><term>Dielectric</term><term>Dielectric tensor</term><term>Dispersion relation</term><term>Dominant process</term><term>Electric field</term><term>Electromagnetic processes</term><term>Electronic cooling</term><term>Electronic recombination</term><term>Imaginary part</term><term>Ion</term><term>Kinetic theory</term><term>Longitudinal modes</term><term>Magnetic field</term><term>Magnetic fields</term><term>Maxwell equations</term><term>Momentum spread</term><term>Nonequilibrium</term><term>Nonequilibrium plasma</term><term>Nonideal plasmas</term><term>Other hand</term><term>Particle densities</term><term>Plasma</term><term>Plasma effects</term><term>Plasma electrodynamics</term><term>Plasma frequency</term><term>Principal quantum number</term><term>Recombination</term><term>Recombination coefficient</term><term>Recombination process</term><term>Recombination rate</term><term>Recombination rates</term><term>Recombined pairs</term><term>Relative motion</term><term>Rest frame</term><term>Rest system</term><term>Second term</term><term>Stark effect</term><term>State vector</term><term>Storage ring</term><term>Tensor</term><term>Theoretischen physik</term><term>Thermal motion</term><term>Thermal velocities</term><term>Toepffer</term><term>Transient fields</term><term>Transition frequencies</term><term>Transition probability</term><term>Typical energy shift</term><term>Vogel</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: We study the recombination in a neutral, fully ionized, anisotropic nonequilibrium plasma with applications to electronic cooling of heavy ion beams in a storage ring. These plasmas are characterized by low particle densities and extreme temperature differences between the free electrons and ions. Starting from a microscopic master equation for the coefficient of recombination, collective effects and three body recombination processes are considered. Because of the small density only photon-like collective modes are important for the induced recombination. As the ion temperature is high initially, it is necessary to include the movement of the ions in the calculation of the recombination coefficient. In a cooler plasma recombination into the high-lying states is cut off by the Stark effect due to the transient electric fields which appear after a Lorentz transformation of the external transversal magnetic fields to the rest frame of the beam.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Bavière</li><li>District de Moyenne-Franconie</li></region><settlement><li>Erlangen</li></settlement></list><tree><country name="Allemagne"><region name="Bavière"><name sortKey="Vogel, J" sort="Vogel, J" uniqKey="Vogel J" first="J." last="Vogel">J. Vogel</name></region><name sortKey="Toepffer, C" sort="Toepffer, C" uniqKey="Toepffer C" first="C." last="Toepffer">C. Toepffer</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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