Effects of Hydrogen Dissociation During Gas Flooding on Formation of Metal Hydride Cluster Ions in Secondary Ion Mass Spectrometry.
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| 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: | Ekar, Jernej1,2,3 (AUTHOR) jernej.ekar@ijs.si, Markelj, Sabina1,2 (AUTHOR) rok.zaplotnik@ijs.si, Mozetič, Miran1,2 (AUTHOR), Zaplotnik, Rok1,2 (AUTHOR), Kovač, Janez1,2 (AUTHOR) jernej.ekar@ijs.si |
| Source: | Nanomaterials (2079-4991). Nov2024, Vol. 14 Issue 21, p1687. 15p. |
| Subjects: | Secondary ion mass spectrometry, Complex ions, Metal clusters, Nuclear reactions, Alloys, Depth profiling |
| 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 180780467 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effects of Hydrogen Dissociation During Gas Flooding on Formation of Metal Hydride Cluster Ions in Secondary Ion Mass Spectrometry. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ekar%2C+Jernej%22">Ekar, Jernej</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> jernej.ekar@ijs.si</i><br /><searchLink fieldCode="AR" term="%22Markelj%2C+Sabina%22">Markelj, Sabina</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> rok.zaplotnik@ijs.si</i><br /><searchLink fieldCode="AR" term="%22Mozetič%2C+Miran%22">Mozetič, Miran</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zaplotnik%2C+Rok%22">Zaplotnik, Rok</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kovač%2C+Janez%22">Kovač, Janez</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jernej.ekar@ijs.si</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Nov2024, Vol. 14 Issue 21, p1687. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Secondary+ion+mass+spectrometry%22">Secondary ion mass spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Complex+ions%22">Complex ions</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+clusters%22">Metal clusters</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+reactions%22">Nuclear reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Depth+profiling%22">Depth profiling</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: 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. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI 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: 10.3390/nano14211687 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 1687 Subjects: – SubjectFull: Secondary ion mass spectrometry Type: general – SubjectFull: Complex ions Type: general – SubjectFull: Metal clusters Type: general – SubjectFull: Nuclear reactions Type: general – SubjectFull: Alloys Type: general – SubjectFull: Depth profiling Type: general Titles: – TitleFull: Effects of Hydrogen Dissociation During Gas Flooding on Formation of Metal Hydride Cluster Ions in Secondary Ion Mass Spectrometry. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ekar, Jernej – PersonEntity: Name: NameFull: Markelj, Sabina – PersonEntity: Name: NameFull: Mozetič, Miran – PersonEntity: Name: NameFull: Zaplotnik, Rok – PersonEntity: Name: NameFull: Kovač, Janez IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 14 – Type: issue Value: 21 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
| ResultId | 1 |
