dorsal/arxiv
View SchemaObservation of multiple ionization pathways for OCS in an intense laser field resolved by three-dimensional covariance mapping and visualized by hierarchical ionization topology
| Authors | W. A. Bryan, W. R. Newell, J. H. Sanderson, A. J. Langley |
|---|---|
| Categories | |
| ArXiv ID | physics/0610058 |
| URL | https://arxiv.org/abs/physics/0610058 |
| DOI | 10.1103/PhysRevA.74.053409 |
| Journal | Phys. Rev. A, vol 74, art 053409 (2006) |
Abstract
The two- and three-body Coulomb explosion of carbonyl sulfide (OCS) by 790 nm, 50 fs laser pulses focussed to $\approx $ 10$^{16}$ Wcm$^{-2}$ has been investigated by three-dimensional covariance mapping technique. For the first time in a triatomic molecule, a single charge state, in this case the trication, has been observed to dissociate into two distinct energy channels. With the aid of a three dimensional visualization technique to reveal the ionization hierarchy, evidence is presented for the existence of two sets of ionization pathways resulting from these two initial states. While one group of ions can be modeled using a Classical enhanced ionization model, the second group, consisting of mainly asymmetric channels, can not. The results provide clear evidence that an enhanced ionization approach must also be accompanied by an appreciation of the effects of excited ionic states and multi-electronic processes.
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"abstract": "The two- and three-body Coulomb explosion of carbonyl sulfide (OCS) by 790\nnm, 50 fs laser pulses focussed to $\\approx $ 10$^{16}$ Wcm$^{-2}$ has been\ninvestigated by three-dimensional covariance mapping technique. For the first\ntime in a triatomic molecule, a single charge state, in this case the\ntrication, has been observed to dissociate into two distinct energy channels.\nWith the aid of a three dimensional visualization technique to reveal the\nionization hierarchy, evidence is presented for the existence of two sets of\nionization pathways resulting from these two initial states. While one group of\nions can be modeled using a Classical enhanced ionization model, the second\ngroup, consisting of mainly asymmetric channels, can not. The results provide\nclear evidence that an enhanced ionization approach must also be accompanied by\nan appreciation of the effects of excited ionic states and multi-electronic\nprocesses.",
"arxiv_id": "physics/0610058",
"authors": [
"W. A. Bryan",
"W. R. Newell",
"J. H. Sanderson",
"A. J. Langley"
],
"categories": [
"physics.chem-ph",
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.053409",
"journal_ref": "Phys. Rev. A, vol 74, art 053409 (2006)",
"title": "Observation of multiple ionization pathways for OCS in an intense laser field resolved by three-dimensional covariance mapping and visualized by hierarchical ionization topology",
"url": "https://arxiv.org/abs/physics/0610058"
},
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