Amplified spontaneous emission and collisional transfer from the f 0 g+ (3P0) ion-pair state of I 2

Abstract

The work presented here extends previous studies of amplified spontaneous emission (ASE) between ion-pair (charge-transfer) states of I2 and shows that ASE can occur between states correlating with different states of the cation, namely, f 0g+34 (3P0) and D0u+ (3P2), despite the smaller transition dipole moment between them. A value of 0.34 e Å is obtained for the transition dipole under experimental conditions where the f 0 g+34 (3P0) →D0u+ (3P2) ASE is eliminated. No F 0u+ ( 3P0) f 0g+34 (3P 0) ASE transfer is observed despite the combination of favorable Franck-Condon factors and transition dipoles. The F0u+ (3P0) f 0g+34 (3P 0) transfer is shown to be purely collisional and a propensity for transfers involving the smallest energy mismatch is observed. © 2009 American Institute of Physics.