Fragment rotational distributions from the dissociation of NeBr2: Experimental and classical trajectory studies

Abstract

A combined experimental-theoretical study of the vibrational predissociation and product rotational distributions for high vibrational levels of He 79 Br 2

A combined experimental-theoretical study of the vibrational predissociation and product rotational distributions for high vibrational levels of He79Br2

“…In fact, the effect has not been observed in NeBr 2 either. 36 The experimental ⌬vϭϪ1 rotational distributions for vЈϭ39-43 ͓Figs. 4͑b͒-4͑f͔͒ are all similar to those for vЈ ϭ10.…”

“…More recently, the possibility of IVR contributions to the NeBr 2 ⌬vϭϪ2 dynamics was discussed. 36 He or Ne bonded to Br 2 may prove to be more amenable to a detailed determination of the PES if the onset of IVR does not complicate the distributions quite so much as for ArCl 2 . In addition, HeBr 2 is especially interesting because the available data allows us to study the PES in the region where the Br-Br separation is as large as 5 Å.…”

“…These similar distributions are characteristic of dissociation that proceeds by direct coupling from the quasibound state of level vЈ to the dissociation continuum states correlating with the vЈϪ1 and vЈϪ2 levels. 34,36 For vЈу44, where the ⌬vϭϪ1 is closed, the ⌬vϭϪ2 distributions become broader and peaked at a higher rotational state ( j f Љϭ4,5). The calculated distributions are very similar to the measured ones for initial levels vЈ ϭ41, 42, and 45; that is to say, before and after the closing of the ⌬vϭϪ1 channel.…”

Selective coherent control of the lifetime of a resonance state with laser pulses

“…34,35 An empirical potential-energy surface is used. 34,36 In this work, three different pump laser electric fields have been applied, namely, one involving a single laser pulse, E 1 (t), one involving a combination of two laser pulses, E 2 (t), and a third one involving a combination of three laser pulses…”

A hybrid classical/quantum approach to cluster fragmentation dynamics: Application to the vibrational predissociation of He2Cl2

“…One type includes high-resolution spectroscopic experiments in the frequency domain, which provide detailed and specific state-tostate dynamical information. [4][5][6][7] A variety of vdW complexes of halogen diatomic molecules bound to rare-gas atoms like He n I 2 (nϭ1 -3), 8 Ne n I 2 (nϭ1 -7), 9 Ne n Br 2 (nϭ1 -3), 10,11 Ne n ICl (nϭ1 -3), 12 Ne n Cl 2 (nϭ1 -3), 13 and He n Cl 2 (n ϭ1,2), 14 have been investigated with these techniques. The second type of experiments, more recently developed, are based on real-time methodologies.…”