Department of Physics and Astronomy: Publications and Other Research


Date of this Version

October 1992


Published in Phys. Rev. A 46, 3870 - 3876 (1992) [Issue 7 – October 1992]. ©1992 The American Physical Society. Used by permission.


We have measured coincidences between neutral H atoms and Lyman-α photons for collisions between 50-keV protons and noble gases as a function of the projectile scattering angle. The coincidences are dominated by capture to the 2p state of the projectile. While the total cross sections depend strongly on the target, the shape of the angular distribution of the differential cross sections was found to depend only weakly on that parameter. The data indicate that electrons are captured predominantly from the outermost shell of the target atom for the collision systems studied here.

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