Author/Authors :
Freudenberg، نويسنده , , Th. and Stert، نويسنده , , V. and Radloff، نويسنده , , W. and Ringling، نويسنده , , J. and Güdde، نويسنده , , J. H. Korn، نويسنده , , G. and Hertel، نويسنده , , I.V.، نويسنده ,
Abstract :
Ultrashort 155 nm pulses are used to study the dynamics of ammonia clusters excited to vibronic levels of the B̃ and C′ state. For the monomer unexpectedly long lifetimes of about 8 ps for NH3 and 65 ps for ND3 have been found while the clusters decay in the sub-ps region. In contrast to earlier observations for ammonia clusters excited to the A electronic state, for (ND3)n the lifetime of the one-photon excited vibronic levels of the B (and C′) state decreases with the cluster size.
