Masahiro Kawasaki, Kunihiro Suto, Yoshihiro Sato, Yutaka Matsumi, Richard Bersohn
{"title":"含氯分子光解的离子成像","authors":"Masahiro Kawasaki, Kunihiro Suto, Yoshihiro Sato, Yutaka Matsumi, Richard Bersohn","doi":"10.1021/jp9609343","DOIUrl":null,"url":null,"abstract":"<p >The photodissociation dynamics of four chlorine-containing compounds was studied by the ion imaging technique. Two compounds, ClNO and (CH<sub>3</sub>)<sub>3</sub>COCl, exhibited strong anisotropy, and the kinetic energy distributions for Cl(<sup>2</sup>P<sub>3/2</sub>) and Cl*(<sup>2</sup>P<sub>1/2</sub>) were indistinguishable. For CCl<sub>4</sub> and SOCl<sub>2</sub> the kinetic energy distributions of Cl and Cl* were very different. In all cases most of the chlorine atoms were released in their ground <sup>2</sup>P<sub>3/2</sub> state. A general explanation is given based on these data and those of others. The process is described in terms of three states whose energies are in the following order:? the ground state, a state correlating with Cl*, and a state correlating with Cl. Sooner or later the Cl state must cross the Cl* state. If the crossing is sooner, i.e. in the Franck?Condon region, Cl and Cl* will have different translational energy distributions. If the crossing is later, i.e. at long distances, Cl and Cl* will have descended a repulsive surface and reached their asymptotic and nearly equal kinetic energies. </p>","PeriodicalId":58,"journal":{"name":"The Journal of Physical Chemistry ","volume":null,"pages":null},"PeriodicalIF":2.7810,"publicationDate":"1996-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/jp9609343","citationCount":"25","resultStr":"{\"title\":\"Ion Imaging of the Photodissociation of Chlorine-Containing Molecules\",\"authors\":\"Masahiro Kawasaki, Kunihiro Suto, Yoshihiro Sato, Yutaka Matsumi, Richard Bersohn\",\"doi\":\"10.1021/jp9609343\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The photodissociation dynamics of four chlorine-containing compounds was studied by the ion imaging technique. Two compounds, ClNO and (CH<sub>3</sub>)<sub>3</sub>COCl, exhibited strong anisotropy, and the kinetic energy distributions for Cl(<sup>2</sup>P<sub>3/2</sub>) and Cl*(<sup>2</sup>P<sub>1/2</sub>) were indistinguishable. For CCl<sub>4</sub> and SOCl<sub>2</sub> the kinetic energy distributions of Cl and Cl* were very different. In all cases most of the chlorine atoms were released in their ground <sup>2</sup>P<sub>3/2</sub> state. A general explanation is given based on these data and those of others. The process is described in terms of three states whose energies are in the following order:? the ground state, a state correlating with Cl*, and a state correlating with Cl. Sooner or later the Cl state must cross the Cl* state. If the crossing is sooner, i.e. in the Franck?Condon region, Cl and Cl* will have different translational energy distributions. If the crossing is later, i.e. at long distances, Cl and Cl* will have descended a repulsive surface and reached their asymptotic and nearly equal kinetic energies. </p>\",\"PeriodicalId\":58,\"journal\":{\"name\":\"The Journal of Physical Chemistry \",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7810,\"publicationDate\":\"1996-12-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1021/jp9609343\",\"citationCount\":\"25\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Journal of Physical Chemistry \",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/jp9609343\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry ","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/jp9609343","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Ion Imaging of the Photodissociation of Chlorine-Containing Molecules
The photodissociation dynamics of four chlorine-containing compounds was studied by the ion imaging technique. Two compounds, ClNO and (CH3)3COCl, exhibited strong anisotropy, and the kinetic energy distributions for Cl(2P3/2) and Cl*(2P1/2) were indistinguishable. For CCl4 and SOCl2 the kinetic energy distributions of Cl and Cl* were very different. In all cases most of the chlorine atoms were released in their ground 2P3/2 state. A general explanation is given based on these data and those of others. The process is described in terms of three states whose energies are in the following order:? the ground state, a state correlating with Cl*, and a state correlating with Cl. Sooner or later the Cl state must cross the Cl* state. If the crossing is sooner, i.e. in the Franck?Condon region, Cl and Cl* will have different translational energy distributions. If the crossing is later, i.e. at long distances, Cl and Cl* will have descended a repulsive surface and reached their asymptotic and nearly equal kinetic energies.