J. Zhang et P. Lambropoulos, TIME-DEPENDENT CALCULATION OF PHOTOELECTRON-SPECTRA IN MG INVOLVING MULTIPLE CONTINUA, Physical review letters, 77(11), 1996, pp. 2186-2189
We report the first successful attempt at the time-dependent nonpertur
bative calculation of multiphoton ionization and above threshold ioniz
ation in the presence of several open channels leaving the ion in exci
ted states. After an outline of the theoretical approach based on a di
scretized basis constructed in terms of B-splines, we also present ill
ustrative results on atomic magnesium.