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- W2004751573 abstract "Measurements are reported of the cross section for electron capture (${ensuremath{sigma}}_{10}$), electron loss (${ensuremath{sigma}}_{01}$), and electron detachment (${ensuremath{sigma}}_{ensuremath{-}10}$) for hydrogen atoms and ions traversing several gases. (${ensuremath{sigma}}_{mathrm{if}}$ represents the cross section for charge transfer from initial state $i$ to final state $f$.) The kinetic energy of the particle was from 3 kev to 200 kev. The target gases used were ${mathrm{H}}_{2}$, He, ${mathrm{N}}_{2}$, ${mathrm{O}}_{2}$, Ne, and A. Cross sections were determined by measuring the attenuation of the hydrogen beam in a gas cell under the influence of an electrostatic or magnetic field. The fraction of the beam in each charge state after passing through a thick target was also determined. This latter measurement served as a test for internal consistency of the data, since the fraction is relatable to the cross section for entry to and exit from the charge state. The loss cross section, ${ensuremath{sigma}}_{01}$, increased monotonically at low energies, reaching a maximum at a velocity approximately equal to the orbital electron velocity. For the higher energies studied the capture cross section could be represented by an expression of the form, $ensuremath{sigma}=A{e}^{ensuremath{-}bv}$, where $A$ and $b$ are constants for each gas studied. The electron attachment cross section, ${ensuremath{sigma}}_{0ensuremath{-}1}$, was of the order ${10}^{ensuremath{-}17}$ ${mathrm{cm}}^{2}$/gas atom for the gases studied and attained a maximum between 5 and 20 kev. The inverse transition, ${ensuremath{sigma}}_{ensuremath{-}10}$, was approximately ${10}^{ensuremath{-}15}$ ${mathrm{cm}}^{2}$/gas atom in the energy range studied." @default.
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- W2004751573 date "1956-08-15" @default.
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- W2004751573 title "Charge Exchange Cross Sections of Hydrogen Ions in Gases" @default.
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- W2004751573 doi "https://doi.org/10.1103/physrev.103.896" @default.
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