| Title: | Effects of hydrogen dissociation during gas flooding on formation of metal hydride cluster ions in secondary ion mass spectrometry |
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| Authors: | ID Ekar, Jernej, Institut Jožef Stefan (Author)
ID Markelj, Sabina, Institut Jožef Stefan (Author)
ID Mozetič, Miran, Institut Jožef Stefan (Author)
ID Zaplotnik, Rok, Institut Jožef Stefan (Author)
ID Kovač, Janez, Institut Jožef Stefan (Author) |
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| Files: |  URL - Source URL, visit https://www.mdpi.com/2079-4991/14/21/1687
 PDF - Presentation file, download (1,18 MB)
MD5: 3A4FC6DB2611BEE4E8F4B5C0E229FDE5
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | The application of hydrogen flooding was recently shown to be a simple and effective approach for improved layer differentiation and interface determination during secondary ion mass spectrometry (SIMS) depth profiling of thin films, as well as an approach with potential in the field of quantitative SIMS analyses. To study the effects of hydrogen further, flooding of H2 molecules was compared to reactions with atomic H on samples of pure metals and their alloys. H2 was introduced into the analytical chamber via a capillary, which was heated to approximately 2200 K to achieve dissociation. Dissociation of H2 up to 30% resulted in a significant increase in the intensity of the metal hydride cluster secondary ions originating from the metallic samples. Comparison of the time scales of possible processes provided insight into the mechanism of hydride cluster secondary ion formation. Cluster ions presumably form during the recombination of the atoms and molecules from the sample and atoms and molecules adsorbed from the gas. This process occurs on the surface or just above it during the sputtering process. These findings coincide with those of previous mechanistic and computational studies. |
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| Keywords: | hydrogen atmosphere, molecule dissociation, gas flooding, cluster ions, secondary ion mass spectrometry |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 24.09.2024 |
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| Article acceptance date: | 18.10.2024 |
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| Publication date: | 22.10.2024 |
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| Publisher: | MDPI |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-15 |
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| Numbering: | Vol. 14, iss. 21, [article no.] 1687 |
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| Source: | Švica |
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| PID: | 20.500.12556/DiRROS-20801  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 2079-4991 |
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| DOI: | 10.3390/nano14211687 |
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| COBISS.SI-ID: | 212778499 |
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| Copyright: | © 2024 by the authors. |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji: Sabina Markelj, Miran Mozetič, Rok Zaplotnik, Janez Kovač;
Opis vira z dne 24. 10. 2024;
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| Publication date in DiRROS: | 08.11.2024 |
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| Views: | 89 |
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| Downloads: | 44 |
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