X Liu et al 2008 New J. Phys. 10 025010 doi:10.1088/1367-2630/10/2/025010
Attosecond electron thermalization in laser-induced nonsequential multiple ionization: hard versus glancing collisions
Focus on Attosecond PhysicsX Liu1, C Figueira de Morisson Faria2 and W Becker3,4
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A recollision-based largely classical statistical model of laser-induced nonsequential multiple (N-fold) ionization of atoms is further explored. Upon its return to the ionic core, the first-ionized electron interacts with the other N- 1 bound electrons either through a contact or a Coulomb interaction. The returning electron may leave either immediately after this interaction or join the other electrons to form a thermalized complex which leaves the ion after the delay Δt, which is the sum of a thermalization time and a possible additional dwell time. Good agreement with the available triple and quadruple ionization data in neon and argon is obtained with the contact scenario and delays of Δt=0.17 T and 0.265 T, respectively, with T the laser period.
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Issue 2 (February 2008)
Received 2 October 2007
Published 29 February 2008
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Attosecond electron thermalization in laser-induced nonsequential multiple ionization: hard versus glancing collisions
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