| Zugriffsnummer | 39146 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Double-slit experiment in momentum space |
| Autor(in); Institution |
Ivanov, Igor; Universidade de Lisboa, Instituto Superior Tecnico, Lisboa, PORTUGAL
Seipt, Daniel; Helmholtz Institut Jena, Jena, GERMANY
Surzhykov, Andrey; FPM, Fundamentale Physik für Metrologie, PTB-Braunschweig
Fritzsche, Stephan; Helmholtz Institut, Jena, GERMANY
|
| Quelle/Jahr | Europhysics Letters: 115 (2016), 4, 41001-P1 - 41001-P6 |
| ISSN | 0295-5075 (PRINT) ; 1286-4854 (ONLINE) |
| DOI | |
| Verlag | Les Ulis: EDP Science |
| Klassifikationscode | PACS: 13.60.Fz |
| Freie Schlagworte | twisted electrons ; double-slit experiment ; accessing the Coulomb phase |
| Zusammenfassung | Young’s classic double-slit experiment demonstrates the reality of interference when waves and particles travel simultaneously along two different spatial paths. Here, we propose a double-slit experiment in momentum space, realized in the free-space elastic scattering of vortex electrons. We show that this process proceeds along two paths in momentum space, which are well localized and well separated from each other. For such vortex beams, the (plane-wave) amplitudes along the two paths acquire adjustable phase shifts and produce interference fringes in the final angular distribution. We argue that this experiment can be realized with the present-day technology. We show that it gives experimental access to the Coulomb phase, a quantity which plays an important role in all charged particle scattering but which usual scattering experiments are insensitive to. |
