TY - JOUR
KW - non-Palaiseau
KW - paper
AU - Valérie Véniard
AU - Richard Taïeb
AU - Alfred Maquet
AB - We present numerical simulations for a model one-dimensional two-electron atom subjected to an intense laser pulse. Double ionization probabilities are presented when the atom is initially in an excited state and depend strongly on the spin state of the system. In view of the recollision picture, we show that they are strongly correlated with the electron-impact ionization probabilities. Furthermore, we show that the dressing by the laser of the remaining ion has to be taken into account to quantitatively describe the two-electron ejection in the low intensity range.
BT - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
DA - OCT 28
M1 - 20
N2 - We present numerical simulations for a model one-dimensional two-electron atom subjected to an intense laser pulse. Double ionization probabilities are presented when the atom is initially in an excited state and depend strongly on the spin state of the system. In view of the recollision picture, we show that they are strongly correlated with the electron-impact ionization probabilities. Furthermore, we show that the dressing by the laser of the remaining ion has to be taken into account to quantitatively describe the two-electron ejection in the low intensity range.
PY - 2003
SP - 4145
EP - 4154
T2 - JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
TI - Double ionization of excited helium states by an intense laser field: spin and dressing effects
VL - 36
SN - 0953-4075
ER -