Do the O Schumann-Runge Bands Participate in keV Collision-Induced Dissociation Experiments?
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| Title: | Do the O Schumann-Runge Bands Participate in keV Collision-Induced Dissociation Experiments? |
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| Authors: | Lin, Yawei1, Mayer, Paul1 pmmayer@uottawa.ca |
| Source: | Journal of the American Society for Mass Spectrometry. Jan2011, Vol. 22 Issue 1, p75-80. 6p. |
| Subjects: | Dissociation (Chemistry), Oxygen, Spectrum analysis, Photons, Scission (Chemistry) |
| Abstract: | In high-energy (keV) CID experiments, oxygen has the unique ability to enhance specific ion fragmentation pathways that lie within a relatively narrow band of activation energy. It has been previously proposed that this oxygen-enhanced dissociation phenomenon is due to the participation of the $$ {{\hbox{O}}_{{2}}}\;{\hbox{B}}{\,^{{3}}}{\Sigma_{\rm{u}}}^{ + } - {\hbox{X}}{\,^{{3}}}{\Sigma_{\rm{g}}}^{ - } $$ (Schumann-Runge) system in the collision complex. During the collision, oxygen is first excited to its $$ {\hbox{B}}{\,^{{3}}}{\Sigma_{\rm{u}}}^{ + } $$ state before it returns this energy to the projectile ion. This energy drives the nonstatistical dissociation of the projectile provided there is an energetically accessible pathway in resonance with the absorbed radiation. To probe the validity of this hypothesis, a modified VG-ZAB mass spectrometer was used to observe the photon emissions from keV collisions of a selection of projectile ions with O target gas. By studying the resulting collision-induced emission (CIE) spectra, a second potential mechanism came to light, one that involves the near-isoenergetic O A Π→X Π state transition. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Society for Mass Spectrometry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 84124202 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Do the O Schumann-Runge Bands Participate in keV Collision-Induced Dissociation Experiments? – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lin%2C+Yawei%22">Lin, Yawei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mayer%2C+Paul%22">Mayer, Paul</searchLink><relatesTo>1</relatesTo><i> pmmayer@uottawa.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Society+for+Mass+Spectrometry%22">Journal of the American Society for Mass Spectrometry</searchLink>. Jan2011, Vol. 22 Issue 1, p75-80. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Dissociation+%28Chemistry%29%22">Dissociation (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen%22">Oxygen</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Photons%22">Photons</searchLink><br /><searchLink fieldCode="DE" term="%22Scission+%28Chemistry%29%22">Scission (Chemistry)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In high-energy (keV) CID experiments, oxygen has the unique ability to enhance specific ion fragmentation pathways that lie within a relatively narrow band of activation energy. It has been previously proposed that this oxygen-enhanced dissociation phenomenon is due to the participation of the $$ {{\hbox{O}}_{{2}}}\;{\hbox{B}}{\,^{{3}}}{\Sigma_{\rm{u}}}^{ + } - {\hbox{X}}{\,^{{3}}}{\Sigma_{\rm{g}}}^{ - } $$ (Schumann-Runge) system in the collision complex. During the collision, oxygen is first excited to its $$ {\hbox{B}}{\,^{{3}}}{\Sigma_{\rm{u}}}^{ + } $$ state before it returns this energy to the projectile ion. This energy drives the nonstatistical dissociation of the projectile provided there is an energetically accessible pathway in resonance with the absorbed radiation. To probe the validity of this hypothesis, a modified VG-ZAB mass spectrometer was used to observe the photon emissions from keV collisions of a selection of projectile ions with O target gas. By studying the resulting collision-induced emission (CIE) spectra, a second potential mechanism came to light, one that involves the near-isoenergetic O A Π→X Π state transition. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the American Society for Mass Spectrometry is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s13361-010-0011-x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 75 Subjects: – SubjectFull: Dissociation (Chemistry) Type: general – SubjectFull: Oxygen Type: general – SubjectFull: Spectrum analysis Type: general – SubjectFull: Photons Type: general – SubjectFull: Scission (Chemistry) Type: general Titles: – TitleFull: Do the O Schumann-Runge Bands Participate in keV Collision-Induced Dissociation Experiments? Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lin, Yawei – PersonEntity: Name: NameFull: Mayer, Paul IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 10440305 Numbering: – Type: volume Value: 22 – Type: issue Value: 1 Titles: – TitleFull: Journal of the American Society for Mass Spectrometry Type: main |
| ResultId | 1 |
