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- W2078916691 abstract "The effects of strong magnetic fields $(Bensuremath{sim}{10}^{4}phantom{rule{0.3em}{0ex}}mathrm{T})$ on charge exchange, excitation, and ionization processes in collisions of $mathrm{H}(1s)$ atoms with fully stripped ions ${A}^{Z+}$ are studied by the classical trajectory Monte Carlo method in the energy range $25--2000phantom{rule{0.3em}{0ex}}mathrm{keV}∕u$. The cases $stackrel{Pvec}{B}ensuremath{parallel}stackrel{Pvec}{v}$ and $stackrel{Pvec}{B}ensuremath{perp}stackrel{Pvec}{v}$, where $stackrel{Pvec}{v}$ is the velocity vector of ${A}^{Z+}$ ion, are considered. It was found that in the considered energy range and for $Bensuremath{leqslant}5ifmmodetimeselsetexttimesfi{}{10}^{4}phantom{rule{0.3em}{0ex}}mathrm{T}$ and $Z=2,6$, the parallel magnetic field insignificantly affects the charge exchange cross section, but leads to an increase of excitation and ionization cross sections in the region below $100--200phantom{rule{0.3em}{0ex}}mathrm{keV}∕u$ (up to a factor of 1.5--4 at $25phantom{rule{0.3em}{0ex}}mathrm{keV}∕u$ for $Z=2$ and 6, respectively). The transverse magnetic field, however, causes a significant (up to a factor of 4) reduction of total charge exchange cross section in the entire energy range investigated and to a dramatic increase of excitation and ionization cross sections (up to one to two orders of magnitude for $Z=2$ and 6, respectively, at $Eensuremath{sim}25phantom{rule{0.3em}{0ex}}mathrm{keV}∕u$ and $B=5ifmmodetimeselsetexttimesfi{}{10}^{4}phantom{rule{0.3em}{0ex}}mathrm{T}$). The physics of magnetic field effects on considered processes is analyzed in terms of time evolution of interactions in the system, total electron energy, and electron trajectories. It was found that the major effects induced by the magnetic field are associated with the diamagnetic term in the interaction, continuum electron trapping in the projectile or target regions, and the Lorentz force. The energy distributions of captured and ionized electrons, as well as the momentum distributions of ionized electrons are also studied." @default.
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- W2078916691 date "2009-01-15" @default.
- W2078916691 modified "2023-09-23" @default.
- W2078916691 title "Charge exchange, excitation, and ionization inAZ++H(1s)collisions in strong magnetic fields" @default.
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- W2078916691 doi "https://doi.org/10.1103/physreva.79.012706" @default.
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