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Fragment Rotational State Distributions From The Dissociation Of Neibr: Experimental And Theoretical Results, Thomas Alex Stephenson
Fragment Rotational State Distributions From The Dissociation Of Neibr: Experimental And Theoretical Results, Thomas Alex Stephenson
Chemistry & Biochemistry Faculty Works
The IBr fragment rotational state distributions that result when the NeIBr van der Waals molecule undergoes vibrational predissociation have been measured in a pump-probe laser-induced fluorescence experiment. Independent of initial vibrational state and the number of quanta of vibrational energy lost from the I-Br coordinate, the rotational distributions extend over the full range of energetically accessible states. From the observation of energetic constraints on the rotational distribution, the dissociation energy (D0) is calculated to be 65.5 +/- 1.2 cm-1 for the A electronic state, v=16. For the X electronic state, v=0, D0=71.8 +/- 1.2 cm-1. Quantum mechanical bound state calculations …
Vibrational Branching Ratios From The Dissociation Of The Neibr Van Der Waals Molecule, Sarah Anne Walter , '91, Thomas Alex Stephenson
Vibrational Branching Ratios From The Dissociation Of The Neibr Van Der Waals Molecule, Sarah Anne Walter , '91, Thomas Alex Stephenson
Chemistry & Biochemistry Faculty Works
The degree of vibrational excitation in the IBr fragment from the vibrational predissociation of NeIBr (A (3)PI(1)) has been measured using two-color pump-probe laser-induced fluorescence spectroscopy. We find that for the lowest initial vibrational states examined, DELTA-upsilon = -1 dissociation pathways dominate the dynamics, while this channel is closed for upsilon greater-than-or-equal-to 17. From this result, the A state binding energy (D0) of the complex is determined to be 67 +/- 4 cm-1, while that in the X electronic state is found to be 73 +/- 4 cm-1. The X state binding energy is identical to that for NeI2 and …