title: Exit point in the strong field ionization process.
abstract: We analyze the process of strong field ionization using the Bohmian approach. This allows retention of the concept of electron trajectories. We consider the tunnelling regime of ionization. We show that, in this regime, the coordinate distribution for the ionized electron has peaks near the points in space that can be interpreted as exit points. The interval of time during which ionization occurs is marked by a quick broadening of the coordinate distribution. The concept of the exit point in the tunneling regime, which has long been assumed for the description of strong field ionization, is justified by our analysis.
authors.affiliation: Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 500-712, Republic of Korea.|Research School of Physics and Engineering, The Australian National University, Canberra ACT 2600, Australia.
authors.forename: I A
authors.initials: IA
authors.lastname: Ivanov
authors.affiliation: Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 500-712, Republic of Korea.|Department of Physics and Photon Science, GIST, Gwangju 500-712, Republic of Korea.
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Nam
authors.affiliation: Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 500-712, Republic of Korea.|Department of Physics and Photon Science, GIST, Gwangju 500-712, Republic of Korea.
authors.forename: Kyung Taec
authors.initials: KT
authors.lastname: Kim