Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets
Properties of clusters often depend critically on the exact number of atomic or molecular building blocks, however, most methods of cluster formation lead to a broad, size distribution and cluster intensity anomalies that are often designated as magic numbers. Here we present a novel approach of bre...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/7/3613 |
| _version_ | 1797439108673437696 |
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| author | Siegfried Kollotzek Olga V. Lushchikova Lukas Tiefenthaler Fabio Zappa Paul Scheier |
| author_facet | Siegfried Kollotzek Olga V. Lushchikova Lukas Tiefenthaler Fabio Zappa Paul Scheier |
| author_sort | Siegfried Kollotzek |
| collection | DOAJ |
| description | Properties of clusters often depend critically on the exact number of atomic or molecular building blocks, however, most methods of cluster formation lead to a broad, size distribution and cluster intensity anomalies that are often designated as magic numbers. Here we present a novel approach of breeding size-selected clusters via pickup of dopants into multiply charged helium nanodroplets. The size and charge state of the initially undoped droplets and the vapor pressure of the dopant in the pickup region, determines the size of the dopant cluster ions that are extracted from the host droplets, via evaporation of the helium matrix in a collision cell filled with room temperature helium or via surface collisions. Size distributions of the selected dopant cluster ions are determined utilizing a high-resolution time of flight mass spectrometer. The comparison of the experimental data, with simulations taking into consideration the pickup probability into a shrinking He droplet due to evaporation during the pickup process, provides a simple explanation for the emergence of size distributions that are narrower than Poisson. |
| first_indexed | 2024-03-09T11:47:57Z |
| format | Article |
| id | doaj.art-e77ec414ec144204920cfbf235c77c8f |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T11:47:57Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-e77ec414ec144204920cfbf235c77c8f2023-11-30T23:19:28ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-03-01237361310.3390/ijms23073613Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium DropletsSiegfried Kollotzek0Olga V. Lushchikova1Lukas Tiefenthaler2Fabio Zappa3Paul Scheier4Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, AustriaInstitut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, AustriaInstitut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, AustriaInstitut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, AustriaInstitut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, AustriaProperties of clusters often depend critically on the exact number of atomic or molecular building blocks, however, most methods of cluster formation lead to a broad, size distribution and cluster intensity anomalies that are often designated as magic numbers. Here we present a novel approach of breeding size-selected clusters via pickup of dopants into multiply charged helium nanodroplets. The size and charge state of the initially undoped droplets and the vapor pressure of the dopant in the pickup region, determines the size of the dopant cluster ions that are extracted from the host droplets, via evaporation of the helium matrix in a collision cell filled with room temperature helium or via surface collisions. Size distributions of the selected dopant cluster ions are determined utilizing a high-resolution time of flight mass spectrometer. The comparison of the experimental data, with simulations taking into consideration the pickup probability into a shrinking He droplet due to evaporation during the pickup process, provides a simple explanation for the emergence of size distributions that are narrower than Poisson.https://www.mdpi.com/1422-0067/23/7/3613size-selected clusterhelium dropletsmass spectrometry |
| spellingShingle | Siegfried Kollotzek Olga V. Lushchikova Lukas Tiefenthaler Fabio Zappa Paul Scheier Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets International Journal of Molecular Sciences size-selected cluster helium droplets mass spectrometry |
| title | Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets |
| title_full | Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets |
| title_fullStr | Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets |
| title_full_unstemmed | Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets |
| title_short | Efficient Formation of Size-Selected Clusters upon Pickup of Dopants into Multiply Charged Helium Droplets |
| title_sort | efficient formation of size selected clusters upon pickup of dopants into multiply charged helium droplets |
| topic | size-selected cluster helium droplets mass spectrometry |
| url | https://www.mdpi.com/1422-0067/23/7/3613 |
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