| Zugriffsnummer | 40929 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Analysis of angular momentum properties of photons emitted in fundamental atomic processes |
| Autor(in); Institution |
Zaytsev, Vladimir; St. Petersburg State University, Department of Physics, St. Petersburg, RUSSIA
Surzhykov, Andrey; FPM, Fundamentale Physik für Metrologie, PTB-Braunschweig; Technische Universität Braunschweig, Braunschweig, GERMANY
Shabaev, Vladimir; St. Petersburg State University, Department of Physics, St. Petersburg, RUSSIA
Stöhlker, Thomas; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GERMANY; Helmholtz-Institute Jena, Jena, GERMANY; Friedrich-Schiller-Universität, Institut für Optik und Quantenelektronik, Jena, GERMANY
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| Quelle/Jahr | Physical Review A: 97 (2018), 4, 1 - 7 |
| Artikelnummer | 043808 |
| ISSN | 2469-9926 (PRINT) ; 2469-9934 (ONLINE) |
| DOI | |
| URL | |
| Verlag | College Park, Md.: American Physical Society |
| Freie Schlagworte | vortex light ; atomic processes ; angular momentum |
| Zusammenfassung | Many atomic processes result in the emission of photons. Analysis of the properties of emitted photons, such as energy and angular distribution as well as polarization, is regarded as a powerful tool for gaining more insight into the physics of corresponding processes. Another characteristic of light is the projection of its angular momentum upon propagation direction. This property has attracted a special attention over the past decades due to studies of twisted (or vortex) light beams. Measurements being sensitive to this projection may provide valuable information about the role of angular momentum in the fundamental atomic processes. Here we describe a simple theoretical method for determination of the angular momentum properties of the photons emitted in various atomic processes. This method is based on the evaluation of expectation value of the total angular momentum projection operator. To illustrate the method, we apply it to the textbook examples of plane-wave, spherical-wave, and Bessel light. Moreover, we investigate the projection of angular momentum for the photons emitted in the process of the radiative recombination with ionic targets. It is found that the recombination photons do carry a nonzero projection of the orbital angular momentum. |
| Themenbereich der Metrologie | Zeit und Frequenz |