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In magnetized dense plasmas, the magnetic field effects on the
capture distance and cross section of electron capture from
hydrogenic ions by fast fully stripped ions is calculated. The
Bohr-Lindhard model is used to obtain the cross section of
electron capture. The longitudinal dielectric function is applied
to describe the interaction potential. The classical straight-line
trajectory approximation is used to derive the motion of the
projectile ion. The capture distance and cross section of electron
capture are derived as a function of the impact parameter,
projectile velocity, Larmor frequency, and plasma parameters. The
electron capture probability in the presence of a magnetic field
is always smaller than one without a magnetic field. When the
magnitude of the magnetic field increases, the magnetic field
effect decreases. For larger projectile velocity the difference
between the capture probability for different magnitudes of
magnetic field becomes more significant.
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