A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry.
The time resolution achievable using standard position-sensitive ion detectors, consisting of a chevron pair of microchannel plates coupled to a phosphor screen, is primarily limited by the emission lifetime of the phosphor, around 70 ns for the most commonly used P47 phosphor. We demonstrate that p...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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AIP Publishing LLC
2014
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| _version_ | 1826278715186741248 |
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| author | Winter, B King, S Brouard, M Vallance, C |
| author_facet | Winter, B King, S Brouard, M Vallance, C |
| author_sort | Winter, B |
| collection | OXFORD |
| description | The time resolution achievable using standard position-sensitive ion detectors, consisting of a chevron pair of microchannel plates coupled to a phosphor screen, is primarily limited by the emission lifetime of the phosphor, around 70 ns for the most commonly used P47 phosphor. We demonstrate that poly-<em>para</em>-phenylene laser dyes may be employed extremely effectively as scintillators, exhibiting higher brightness and much shorter decay lifetimes than P47. We provide an extensive characterisation of the properties of such scintillators, with a particular emphasis on applications in velocity-map imaging and microscope-mode imaging mass spectrometry. The most promising of the new scintillators exhibits an electron-to-photon conversion efficiency double that of P47, with an emission lifetime an order of magnitude shorter. The new scintillator screens are vacuum stable and show no signs of signal degradation even over longer periods of operation. |
| first_indexed | 2024-03-06T23:48:05Z |
| format | Journal article |
| id | oxford-uuid:71a382be-9625-49f2-b5bb-b20c8948ae78 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:48:05Z |
| publishDate | 2014 |
| publisher | AIP Publishing LLC |
| record_format | dspace |
| spelling | oxford-uuid:71a382be-9625-49f2-b5bb-b20c8948ae782022-03-26T19:44:58ZA fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:71a382be-9625-49f2-b5bb-b20c8948ae78EnglishSymplectic Elements at OxfordAIP Publishing LLC2014Winter, BKing, SBrouard, MVallance, CThe time resolution achievable using standard position-sensitive ion detectors, consisting of a chevron pair of microchannel plates coupled to a phosphor screen, is primarily limited by the emission lifetime of the phosphor, around 70 ns for the most commonly used P47 phosphor. We demonstrate that poly-<em>para</em>-phenylene laser dyes may be employed extremely effectively as scintillators, exhibiting higher brightness and much shorter decay lifetimes than P47. We provide an extensive characterisation of the properties of such scintillators, with a particular emphasis on applications in velocity-map imaging and microscope-mode imaging mass spectrometry. The most promising of the new scintillators exhibits an electron-to-photon conversion efficiency double that of P47, with an emission lifetime an order of magnitude shorter. The new scintillator screens are vacuum stable and show no signs of signal degradation even over longer periods of operation. |
| spellingShingle | Winter, B King, S Brouard, M Vallance, C A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title | A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title_full | A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title_fullStr | A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title_full_unstemmed | A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title_short | A fast microchannel plate-scintillator detector for velocity map imaging and imaging mass spectrometry. |
| title_sort | fast microchannel plate scintillator detector for velocity map imaging and imaging mass spectrometry |
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