d ionization: Stratified symmetrical electron emission and resonantly structured ionization continuum
نویسندگان
چکیده
We have discovered theoretically that ionization of a one-dimensional quantum well by an ultrashort subcycle ~d-like! electromagnetic pulse results in photoelectrons propagating both along the field and in the opposite direction in well-separated shells whose velocities reflect quasiresonances in the ionization continuum. For both a quantum well and a three-dimensional hydrogenlike atom, a unipolar, i.e., strongly asymmetrical, d ionization produces an approximately symmetrical, stratified photoelectron cloud. @S1050-2947~99!09701-2#
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