par Latinne, Olivier ;Kylstra, Niels Jan ;Dorr, Martin ;Joachain, Charles ;Purvis, J.;Burke, Philip P.G.;Terao-Dunseath, Mariko;Noble, Cliff
Référence Physical review letters, 74, 1, page (46-49)
Publication Publié, 1995
Référence Physical review letters, 74, 1, page (46-49)
Publication Publié, 1995
Article révisé par les pairs
Résumé : | An initial bound state and an autoionizing state of a complex atom (or ion) which are resonantly coupled by a radiation field can both be characterized in a Floquet approach by complex quasienergies. For certain values of the field's intensity and frequency, the two quasienergies become equal, giving rise to laser-induced degenerate states (LIDS). This phenomenon is demonstrated by applying the ab initio, fully nonperturbative R-matrix Floquet theory to Ar, H-, and He. The general case is considered by constructing models containing discrete states and continua. Results for one- and for two-photon resonances are presented and suggestions for experimental observation are given. |