Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them
This study investigates how the presence of quantum vortices affects the ionization cross-section of helium atoms by 75 keV proton impact, with special attention to the region near the electron capture to the continuum (ECC) cusp. It has been found that these vortices cause a significant reduction i...
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2025-01-01
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| author | Tamara A. Guarda Francisco Navarrete Raúl O. Barrachina |
| author_facet | Tamara A. Guarda Francisco Navarrete Raúl O. Barrachina |
| author_sort | Tamara A. Guarda |
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| description | This study investigates how the presence of quantum vortices affects the ionization cross-section of helium atoms by 75 keV proton impact, with special attention to the region near the electron capture to the continuum (ECC) cusp. It has been found that these vortices cause a significant reduction in the intensity of the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mo>|</mo><mi>T</mi><mo>|</mo></mrow><mrow><mn>2</mn></mrow></msup></mrow></semantics></math></inline-formula> distribution in the low-energy region of the ECC cusp, leading to a considerable distortion that facilitates its experimental determination. Furthermore, the analysis shows that one of the vortices coincides with the Thomas angle (a parameter coming from the classical ion-electron Thomas mechanism). |
| format | Article |
| id | doaj-art-877b042ed0ec4001a8e0e5b68490bcc5 |
| institution | Kabale University |
| issn | 2218-2004 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atoms |
| spelling | doaj-art-877b042ed0ec4001a8e0e5b68490bcc52025-01-24T13:22:05ZengMDPI AGAtoms2218-20042025-01-01131310.3390/atoms13010003Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure ThemTamara A. Guarda0Francisco Navarrete1Raúl O. Barrachina2Bariloche Atomic Centre, National Atomic Energy Commission, Bariloche 8400, ArgentinaInstitute of Physics, University of Rostock, 18051 Rostock, GermanyBariloche Atomic Centre, National Atomic Energy Commission, Bariloche 8400, ArgentinaThis study investigates how the presence of quantum vortices affects the ionization cross-section of helium atoms by 75 keV proton impact, with special attention to the region near the electron capture to the continuum (ECC) cusp. It has been found that these vortices cause a significant reduction in the intensity of the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mo>|</mo><mi>T</mi><mo>|</mo></mrow><mrow><mn>2</mn></mrow></msup></mrow></semantics></math></inline-formula> distribution in the low-energy region of the ECC cusp, leading to a considerable distortion that facilitates its experimental determination. Furthermore, the analysis shows that one of the vortices coincides with the Thomas angle (a parameter coming from the classical ion-electron Thomas mechanism).https://www.mdpi.com/2218-2004/13/1/3ionizationprotonvortexthree-bodyECCCDW |
| spellingShingle | Tamara A. Guarda Francisco Navarrete Raúl O. Barrachina Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them Atoms ionization proton vortex three-body ECC CDW |
| title | Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them |
| title_full | Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them |
| title_fullStr | Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them |
| title_full_unstemmed | Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them |
| title_short | Emergence of Quantum Vortices in the Ionization of Helium by Proton Impact, and How to Measure Them |
| title_sort | emergence of quantum vortices in the ionization of helium by proton impact and how to measure them |
| topic | ionization proton vortex three-body ECC CDW |
| url | https://www.mdpi.com/2218-2004/13/1/3 |
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