Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules
When a molecule loses two electrons, Coulomb repulsion makes the resulting doubly charged system likely to fragment into two singly charged ions. These monocations can be detected in a correlated fashion using multiplex time-of-flight spectroscopy. The island shapes in the ion-ion coincidence maps d...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Nature Research
2024
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| _version_ | 1826315207663681536 |
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| author | Olsson, E Wallner, M Squibb, RJ Ideböhn, V Parriani, M Parkes, MA Price, SD Eland, JH Feifel, R |
| author_facet | Olsson, E Wallner, M Squibb, RJ Ideböhn, V Parriani, M Parkes, MA Price, SD Eland, JH Feifel, R |
| author_sort | Olsson, E |
| collection | OXFORD |
| description | When a molecule loses two electrons, Coulomb repulsion makes the resulting doubly charged system likely to fragment into two singly charged ions. These monocations can be detected in a correlated fashion using multiplex time-of-flight spectroscopy. The island shapes in the ion-ion coincidence maps derived from such two-body dissociations contain detailed information on the physical processes underlying the fragmentation. Here, a simple method is presented where a fit function is used to determine the anisotropy parameter β of the molecular distribution from the peak shape of the time-of-flight difference of the two ions. The validity of the method is demonstrated by performing fits to simulated peak shapes, recovering the β value of the input angular distribution, and by comparison of experimental peak shapes to β values known from the literature. |
| first_indexed | 2024-12-09T03:21:47Z |
| format | Journal article |
| id | oxford-uuid:22bd3d76-d605-4043-b77a-fb843141c16e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-12-09T03:21:47Z |
| publishDate | 2024 |
| publisher | Nature Research |
| record_format | dspace |
| spelling | oxford-uuid:22bd3d76-d605-4043-b77a-fb843141c16e2024-11-20T20:13:09ZAnisotropy parameters from shapes of ion-ion correlation features of fragmenting moleculesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:22bd3d76-d605-4043-b77a-fb843141c16eEnglishJisc Publications RouterNature Research2024Olsson, EWallner, MSquibb, RJIdeböhn, VParriani, MParkes, MAPrice, SDEland, JHFeifel, RWhen a molecule loses two electrons, Coulomb repulsion makes the resulting doubly charged system likely to fragment into two singly charged ions. These monocations can be detected in a correlated fashion using multiplex time-of-flight spectroscopy. The island shapes in the ion-ion coincidence maps derived from such two-body dissociations contain detailed information on the physical processes underlying the fragmentation. Here, a simple method is presented where a fit function is used to determine the anisotropy parameter β of the molecular distribution from the peak shape of the time-of-flight difference of the two ions. The validity of the method is demonstrated by performing fits to simulated peak shapes, recovering the β value of the input angular distribution, and by comparison of experimental peak shapes to β values known from the literature. |
| spellingShingle | Olsson, E Wallner, M Squibb, RJ Ideböhn, V Parriani, M Parkes, MA Price, SD Eland, JH Feifel, R Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title | Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title_full | Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title_fullStr | Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title_full_unstemmed | Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title_short | Anisotropy parameters from shapes of ion-ion correlation features of fragmenting molecules |
| title_sort | anisotropy parameters from shapes of ion ion correlation features of fragmenting molecules |
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