دورية أكاديمية
Nuclear materials and energy / Energetic D+ and He+ impinging on solid beryllium: observation of physical and chemically assisted atomic and molecular ion sputtering
| العنوان: | Nuclear materials and energy / Energetic D+ and He+ impinging on solid beryllium: observation of physical and chemically assisted atomic and molecular ion sputtering |
|---|---|
| المؤلفون: | Duensing, Felix, Hechenberger, Faro, Ballauf, Lorenz, Reider, Anna Maria, Menzel, Alexander, Zappa, Fabio, Dittmar, Timo, Böhme, Diethard K., Scheier, Paul |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2022 |
| المجموعة: | University of Innsbruck: Digital Library (Universitäts- und Landesbibliothek Tirol) |
| جغرافية الموضوع: | UI:MI:IA, UI:AE:MN, UI:CP:PC |
| الوصف: | Our Surface-Time-Of-Flight (SurfTOF) tandem mass spectrometer apparatus has been employed in a comparative investigation of ion sputtering induced by mono-energetic D+ and He+ ion beams impinging on a Be surface at 700 K with impact energies from 5 to 500 eV. Both chemically assisted sputtering (by D+ impact below 50 eV) and physical sputtering (by He+ and D+ above 50 eV) were observed. Be+ was the dominant sputtered ion at all energies. Chemically assisted sputtering mechanisms are proposed for the concomitant chemical sputtering of Be+, Be2+ and BeD+ ions (by D+ at low energies). Evidence was also obtained for the sputtering of BeO+ and Be2O+ by both He+ and D+ impact ions (with a minimum at 30 eV with D+), but only above 30 eV with He+. They are ascribed to the presence of BeO and Be2O impurities in the surface layer of Be. Water molecules adsorbed on the Be sample gave rise to BeH+ and BeOH+ in the sputtered ion spectrum primarily at higher energies above 30 eV where Be+ ejection is enhanced. Combined observations with a quartz crystal microbalance and a Faraday cup provided preliminary insight into the sputter yields of neutral and ionized beryllium. These results can be carried over to the erosion of Be by plasma deuterons, and T+ by extension, in its use as the first wall for the ITER blanket in fusion technology. ; Version of record |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text/html |
| اللغة: | English |
| تدمد: | 2352-1791 |
| العلاقة: | vignette : https://diglib.uibk.ac.at/titlepage/urn/urn:nbn:at:at-ubi:3-33489/128Test; urn:nbn:at:at-ubi:3-33489; https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-33489Test; local:99147472453303331; system:AC16881679 |
| DOI: | 10.1016/j.nme.2021.101110 |
| الإتاحة: | https://doi.org/10.1016/j.nme.2021.101110Test https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-33489Test |
| حقوق: | cc-by-nc-nd_4 |
| رقم الانضمام: | edsbas.EC3E5E36 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 23521791 |
|---|---|
| DOI: | 10.1016/j.nme.2021.101110 |