A crossed-beam study of the state-resolved dynamics of CH( X sup 2. Pi. )+D sub 2. I. The inelastic scattering channel
The state-to-state integral cross sections for the inelastic scattering of CH({ital X} {sup 2}{Pi}) and D{sub 2} to produce rotationally excited CH({ital X} {sup 2}{Pi}) product have been measured in a crossed-beam apparatus by the laser-induced fluorescence method. Two types of measurements were pe...
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| Veröffentlicht in: | The Journal of chemical physics 1990-08, Vol.93:4 |
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| creator | Macdonald, R.G. Liu, K. |
| description | The state-to-state integral cross sections for the inelastic scattering of CH({ital X} {sup 2}{Pi}) and D{sub 2} to produce rotationally excited CH({ital X} {sup 2}{Pi}) product have been measured in a crossed-beam apparatus by the laser-induced fluorescence method. Two types of measurements were performed: (1) the translational energy dependence of an individual quantum state of the product and (2) the state distribution of the products at fixed and well-defined translational energy. For the inelastic scattering channel, the cross sections gradually increased from a dynamical threshold to a broad maximum and then slowly decreased as the translational energy increases. Evidence for multiple-impact rotational rainbows was found and a possible frequency-locking phenomenon between the two receding rotors resulted. Moderate orbital alignment was observed except for the highest rotational levels of the product. By comparing and contrasting the kinematically similar system CH({ital X} {sup 2}{Pi})+He, the influence of a strongly attractive potential energy surface on the inelastic scattering of CH+D{sub 2} was inferred. Combining the results of the inelastic scattering and the isotopic exchange channels (the following paper) provide an unprecedented look into the dynamics of collisions between CH({ital X} {sup 2}{Pi}) and D{sub 2}. |
| doi_str_mv | 10.1063/1.459024 |
| format | Article |
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The inelastic scattering channel</title><source>AIP Digital Archive</source><creator>Macdonald, R.G. ; Liu, K.</creator><creatorcontrib>Macdonald, R.G. ; Liu, K. ; Argonne National Laboratory (ANL), Argonne, IL</creatorcontrib><description>The state-to-state integral cross sections for the inelastic scattering of CH({ital X} {sup 2}{Pi}) and D{sub 2} to produce rotationally excited CH({ital X} {sup 2}{Pi}) product have been measured in a crossed-beam apparatus by the laser-induced fluorescence method. Two types of measurements were performed: (1) the translational energy dependence of an individual quantum state of the product and (2) the state distribution of the products at fixed and well-defined translational energy. For the inelastic scattering channel, the cross sections gradually increased from a dynamical threshold to a broad maximum and then slowly decreased as the translational energy increases. Evidence for multiple-impact rotational rainbows was found and a possible frequency-locking phenomenon between the two receding rotors resulted. Moderate orbital alignment was observed except for the highest rotational levels of the product. By comparing and contrasting the kinematically similar system CH({ital X} {sup 2}{Pi})+He, the influence of a strongly attractive potential energy surface on the inelastic scattering of CH+D{sub 2} was inferred. Combining the results of the inelastic scattering and the isotopic exchange channels (the following paper) provide an unprecedented look into the dynamics of collisions between CH({ital X} {sup 2}{Pi}) and D{sub 2}.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.459024</identifier><language>eng</language><publisher>United States</publisher><subject>400201 -- Chemical & Physicochemical Properties ; ATOMIC AND MOLECULAR PHYSICS ; BEAMS ; CHEMICAL REACTIONS ; COLLISIONS ; CROSS SECTIONS ; DEUTERIUM ; ELECTROMAGNETIC RADIATION ; ENERGY DEPENDENCE ; ENERGY LEVELS ; ENERGY-LEVEL TRANSITIONS ; EXCITATION ; EXCITED STATES ; FLUORESCENCE ; HYDROGEN ISOTOPES ; INELASTIC SCATTERING ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; INTEGRAL CROSS SECTIONS ; ISOTOPES ; LASER RADIATION ; LIGHT NUCLEI ; LUMINESCENCE ; METHYLENE RADICALS ; MOLECULAR BEAMS ; MOLECULE COLLISIONS ; MOLECULE-MOLECULE COLLISIONS ; NUCLEI ; ODD-ODD NUCLEI ; RADIATIONS ; RADICALS ; ROTATIONAL STATES ; SCATTERING ; STABLE ISOTOPES 640304 -- Atomic, Molecular & Chemical Physics-- Collision Phenomena</subject><ispartof>The Journal of chemical physics, 1990-08, Vol.93:4</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,778,782,883,27907,27908</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/6607711$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Macdonald, R.G.</creatorcontrib><creatorcontrib>Liu, K.</creatorcontrib><creatorcontrib>Argonne National Laboratory (ANL), Argonne, IL</creatorcontrib><title>A crossed-beam study of the state-resolved dynamics of CH( X sup 2. Pi. )+D sub 2. I. The inelastic scattering channel</title><title>The Journal of chemical physics</title><description>The state-to-state integral cross sections for the inelastic scattering of CH({ital X} {sup 2}{Pi}) and D{sub 2} to produce rotationally excited CH({ital X} {sup 2}{Pi}) product have been measured in a crossed-beam apparatus by the laser-induced fluorescence method. Two types of measurements were performed: (1) the translational energy dependence of an individual quantum state of the product and (2) the state distribution of the products at fixed and well-defined translational energy. For the inelastic scattering channel, the cross sections gradually increased from a dynamical threshold to a broad maximum and then slowly decreased as the translational energy increases. Evidence for multiple-impact rotational rainbows was found and a possible frequency-locking phenomenon between the two receding rotors resulted. Moderate orbital alignment was observed except for the highest rotational levels of the product. By comparing and contrasting the kinematically similar system CH({ital X} {sup 2}{Pi})+He, the influence of a strongly attractive potential energy surface on the inelastic scattering of CH+D{sub 2} was inferred. Combining the results of the inelastic scattering and the isotopic exchange channels (the following paper) provide an unprecedented look into the dynamics of collisions between CH({ital X} {sup 2}{Pi}) and D{sub 2}.</description><subject>400201 -- Chemical & Physicochemical Properties</subject><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>BEAMS</subject><subject>CHEMICAL REACTIONS</subject><subject>COLLISIONS</subject><subject>CROSS SECTIONS</subject><subject>DEUTERIUM</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>ENERGY DEPENDENCE</subject><subject>ENERGY LEVELS</subject><subject>ENERGY-LEVEL TRANSITIONS</subject><subject>EXCITATION</subject><subject>EXCITED STATES</subject><subject>FLUORESCENCE</subject><subject>HYDROGEN ISOTOPES</subject><subject>INELASTIC SCATTERING</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>INTEGRAL CROSS SECTIONS</subject><subject>ISOTOPES</subject><subject>LASER RADIATION</subject><subject>LIGHT NUCLEI</subject><subject>LUMINESCENCE</subject><subject>METHYLENE RADICALS</subject><subject>MOLECULAR BEAMS</subject><subject>MOLECULE COLLISIONS</subject><subject>MOLECULE-MOLECULE COLLISIONS</subject><subject>NUCLEI</subject><subject>ODD-ODD NUCLEI</subject><subject>RADIATIONS</subject><subject>RADICALS</subject><subject>ROTATIONAL STATES</subject><subject>SCATTERING</subject><subject>STABLE ISOTOPES 640304 -- Atomic, Molecular & Chemical Physics-- Collision Phenomena</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNqNi81OwzAQhC0EEuFH4hFWnEDIZp0GhxxRC2pvPfTArXI3W2KUxijrVurb40o8AKfRN_ONUncWjUU3ebamemmwrM5UYfG10bVr8FwViKXVjUN3qa5EvhHR1mVVqMMb0BhFuNUb9juQtG-PELeQOs7gE-uRJfYHbqE9Dn4XSE7zdP4AnyD7HygNLIOBx6dZxs0JFwZW-R0G7r2kQCDkU-IxDF9AnR9yf6Mutr4Xvv3La3X_8b6aznXMh7VQSEwdxaxSWjuHdW3t5F_SL3gmTaU</recordid><startdate>19900815</startdate><enddate>19900815</enddate><creator>Macdonald, R.G.</creator><creator>Liu, K.</creator><scope>OTOTI</scope></search><sort><creationdate>19900815</creationdate><title>A crossed-beam study of the state-resolved dynamics of CH( X sup 2. Pi. )+D sub 2. I. The inelastic scattering channel</title><author>Macdonald, R.G. ; Liu, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_66077113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>400201 -- Chemical & Physicochemical Properties</topic><topic>ATOMIC AND MOLECULAR PHYSICS</topic><topic>BEAMS</topic><topic>CHEMICAL REACTIONS</topic><topic>COLLISIONS</topic><topic>CROSS SECTIONS</topic><topic>DEUTERIUM</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>ENERGY DEPENDENCE</topic><topic>ENERGY LEVELS</topic><topic>ENERGY-LEVEL TRANSITIONS</topic><topic>EXCITATION</topic><topic>EXCITED STATES</topic><topic>FLUORESCENCE</topic><topic>HYDROGEN ISOTOPES</topic><topic>INELASTIC SCATTERING</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>INTEGRAL CROSS SECTIONS</topic><topic>ISOTOPES</topic><topic>LASER RADIATION</topic><topic>LIGHT NUCLEI</topic><topic>LUMINESCENCE</topic><topic>METHYLENE RADICALS</topic><topic>MOLECULAR BEAMS</topic><topic>MOLECULE COLLISIONS</topic><topic>MOLECULE-MOLECULE COLLISIONS</topic><topic>NUCLEI</topic><topic>ODD-ODD NUCLEI</topic><topic>RADIATIONS</topic><topic>RADICALS</topic><topic>ROTATIONAL STATES</topic><topic>SCATTERING</topic><topic>STABLE ISOTOPES 640304 -- Atomic, Molecular & Chemical Physics-- Collision Phenomena</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Macdonald, R.G.</creatorcontrib><creatorcontrib>Liu, K.</creatorcontrib><creatorcontrib>Argonne National Laboratory (ANL), Argonne, IL</creatorcontrib><collection>OSTI.GOV</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Macdonald, R.G.</au><au>Liu, K.</au><aucorp>Argonne National Laboratory (ANL), Argonne, IL</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A crossed-beam study of the state-resolved dynamics of CH( X sup 2. Pi. )+D sub 2. I. The inelastic scattering channel</atitle><jtitle>The Journal of chemical physics</jtitle><date>1990-08-15</date><risdate>1990</risdate><volume>93:4</volume><issn>0021-9606</issn><eissn>1089-7690</eissn><abstract>The state-to-state integral cross sections for the inelastic scattering of CH({ital X} {sup 2}{Pi}) and D{sub 2} to produce rotationally excited CH({ital X} {sup 2}{Pi}) product have been measured in a crossed-beam apparatus by the laser-induced fluorescence method. Two types of measurements were performed: (1) the translational energy dependence of an individual quantum state of the product and (2) the state distribution of the products at fixed and well-defined translational energy. For the inelastic scattering channel, the cross sections gradually increased from a dynamical threshold to a broad maximum and then slowly decreased as the translational energy increases. Evidence for multiple-impact rotational rainbows was found and a possible frequency-locking phenomenon between the two receding rotors resulted. Moderate orbital alignment was observed except for the highest rotational levels of the product. By comparing and contrasting the kinematically similar system CH({ital X} {sup 2}{Pi})+He, the influence of a strongly attractive potential energy surface on the inelastic scattering of CH+D{sub 2} was inferred. Combining the results of the inelastic scattering and the isotopic exchange channels (the following paper) provide an unprecedented look into the dynamics of collisions between CH({ital X} {sup 2}{Pi}) and D{sub 2}.</abstract><cop>United States</cop><doi>10.1063/1.459024</doi></addata></record> |
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| identifier | ISSN: 0021-9606 |
| ispartof | The Journal of chemical physics, 1990-08, Vol.93:4 |
| issn | 0021-9606 1089-7690 |
| language | eng |
| recordid | cdi_osti_scitechconnect_6607711 |
| source | AIP Digital Archive |
| subjects | 400201 -- Chemical & Physicochemical Properties ATOMIC AND MOLECULAR PHYSICS BEAMS CHEMICAL REACTIONS COLLISIONS CROSS SECTIONS DEUTERIUM ELECTROMAGNETIC RADIATION ENERGY DEPENDENCE ENERGY LEVELS ENERGY-LEVEL TRANSITIONS EXCITATION EXCITED STATES FLUORESCENCE HYDROGEN ISOTOPES INELASTIC SCATTERING INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY INTEGRAL CROSS SECTIONS ISOTOPES LASER RADIATION LIGHT NUCLEI LUMINESCENCE METHYLENE RADICALS MOLECULAR BEAMS MOLECULE COLLISIONS MOLECULE-MOLECULE COLLISIONS NUCLEI ODD-ODD NUCLEI RADIATIONS RADICALS ROTATIONAL STATES SCATTERING STABLE ISOTOPES 640304 -- Atomic, Molecular & Chemical Physics-- Collision Phenomena |
| title | A crossed-beam study of the state-resolved dynamics of CH( X sup 2. Pi. )+D sub 2. I. The inelastic scattering channel |
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