Photodissociation of weakly bound ion-molecule clusters: the krypton.carbon dioxide (Kr.CO2+) cluster
| Autor: | Winfried Wagner-Redeker, Michael T. Bowers, Martin F. Jarrold, Andreas J. Illies |
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| Rok vydání: | 1985 |
| Předmět: | |
| Zdroj: | The Journal of Physical Chemistry. 89:3269-3273 |
| ISSN: | 1541-5740 0022-3654 |
| Popis: | The results of a laser-ion beam study of the photodissociation of the Kr.CO/sub 2//sup +/ cluster are presented. The photodissociation spectrum, product branching ratios, product angular distributions, and product relative kinetic energy distributions are reported. The photodissociation spectrum has a broad maximum of 2.4 x 10/sup -17/ cm/sup 2/ at around 500 nm. Two ionic products were observed: Kr/sup +/ (around 60%) and CO/sub 2//sup +/. The product angular distributions could be adequately fit by the expression P(theta) = 1 + ..beta..P/sub 2/(cos theta) with a value of 1.55 for ..beta.. for the Kr/sup +/ product and 1.35 for the CO/sub 2/ product, indicating parallel type transitions and lifetimes shorter than a rotational period. The product relative kinetic energy distributions peak at large values of relative kinetic energy indicating nonstatistical energy disposal. The kinetic energy distributions for the Kr/sup +/ product are bimodal at 650 nm. The two components probably arise from production of both spin-orbit states of Kr/sup +/: /sup 2/P/sub 1/2/ and /sup 2/P/sub 3/2/. 28 references, 8 figures, 1 table. |
| Databáze: | OpenAIRE |
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