TY - JOUR
T1 - Missing bands in the multiphoton excitation of coupled molecular states
AU - Lewis, B. R.
AU - Gibson, S. T.
AU - Copeland, Richard A.
AU - Bressler, C. G.
PY - 1999
Y1 - 1999
N2 - Measurements are reported of (3+1) resonance-enhanced multiphoton ionization of O2via the F3Πustate which show near-vanishing intensity for F-X(1,0), the strongest band in one-photon spectra. Using a coupled-channel treatment of the3ΠuRydberg-valence interactions, this dramatic result is attributed to destructive interference between the amplitudes for transitions into the Rydberg and valence components of the heavily mixed F state, indicating a significant dependence of the relative transition amplitudes on the mode of excitation. Thus, “missing bands” in the multiphoton spectra of coupled states provide important information on relative multiphoton transition probabilities.
AB - Measurements are reported of (3+1) resonance-enhanced multiphoton ionization of O2via the F3Πustate which show near-vanishing intensity for F-X(1,0), the strongest band in one-photon spectra. Using a coupled-channel treatment of the3ΠuRydberg-valence interactions, this dramatic result is attributed to destructive interference between the amplitudes for transitions into the Rydberg and valence components of the heavily mixed F state, indicating a significant dependence of the relative transition amplitudes on the mode of excitation. Thus, “missing bands” in the multiphoton spectra of coupled states provide important information on relative multiphoton transition probabilities.
UR - http://www.scopus.com/inward/record.url?scp=0000562997&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.82.4212
DO - 10.1103/PhysRevLett.82.4212
M3 - Article
SN - 0031-9007
VL - 82
SP - 4212
EP - 4215
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
ER -