Occupation of fine-structure states in electron capture and transport
| Autor: | J.P. Rozet, Dominique Vernhet, David R. Schultz, Joachim Burgdörfer, Emily Lamour, Carlos O. Reinhold, T. Minami, Marek Seliger, Shuhei Yoshida |
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| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), TU Vienne Autriche, Oakridge National Lb. |
| Rok vydání: | 2008 |
| Předmět: |
X-ray spectra
Electron capture Population atom-surface impact Electronic structure 01 natural sciences 010305 fluids & plasmas symbols.namesake 0103 physical sciences 34.50.Fa 34.10.+x 34.70.+e 34.80.Nz electron capture 010306 general physics Spin (physics) education atom-molecule collisions excited states fine structure Physics education.field_of_study [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] Lyman series Charge (physics) Atomic and Molecular Physics and Optics Excited state argon positive ions symbols electron transport theory Atomic physics relativistic corrections Relativistic quantum chemistry |
| Zdroj: | Physical Review A Physical Review A, American Physical Society, 2008, 77 (4), 042713, 5p. ⟨10.1103/PhysRevA.77.042713⟩ Physical Review A : Atomic, molecular, and optical physics [1990-2015] Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2008, 77 (4), 042713, 5p. ⟨10.1103/PhysRevA.77.042713⟩ |
| ISSN: | 1094-1622 1050-2947 |
| Popis: | We study the population of the fine-structure states in excited-state manifolds of hydrogenic ${\text{Ar}}^{17+}$ ions resulting from charge transfer in collisions of 13.6 MeV/amu ${\text{Ar}}^{18+}$ ions with thin carbon foils or ${\text{CH}}_{4}$ and ${\text{N}}_{2}$ gases. Experimental information on excited states populations is determined by x-ray spectroscopy of individual fine-structure components of the Lyman series allowing for sensitive probes of relativistic effects during the primary charge transfer and the subsequent transport. We show that the ratio of the populations of the $2{p}_{1/2}$ and $2{p}_{3/2}$ states provides clear evidence for spin dependent relativistic effects at moderately relativistic speeds. |
| Databáze: | OpenAIRE |
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