Phys. Rev. A 60, 2131–2138 (1999)Ionization of Rydberg atoms of sodium by 360–4400 eV alkali-metal ionsReceived 16 March 1999; published in the issue dated September 1999 Impact ionization by singly charged ions from Rydberg Na(24d) and Na(25s) states has been investigated over the reduced velocity region ṽ=0.5–2.2. The ions of Na+, K+, and Li+ were accelerated to energies from 360 to 4400 eV and used to bombard the laser-excited Rydberg atoms. Electrons released in the ionization of Rydberg atoms were collected from the collision volume and registered by a channel electron multiplier. Measured relative ionization cross sections from Na(24d) and Na(25s) states show maxima at ṽ=1.6–1.7 and agree moderately well with classical-trajectory Monte Carlo calculations. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.60.2131
DOI:
10.1103/PhysRevA.60.2131
PACS:
34.50.Fa, 34.60.+z
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