Efficient 2S3 positronium production by stimulated decay from the 3P3 level
| Autor: | R. S. Brusa, P. Hackstock, E. Widmann, B. Rienaecker, Heidi Sandaker, S. Haider, M. Fanì, A. Hinterberger, V. Matveev, Ph. Lebrun, Sebastian Gerber, Daniel Comparat, A. S. Belov, Ole Røhne, Ruggero Caravita, Patrick Nedelec, E. Oswald, M. Antonello, C. Zimmer, I. C. Tietje, G. Testera, S. Müller, Alban Kellerbauer, Luca Penasa, Fabrizio Castelli, Giovanni Consolati, Germano Bonomi, A. Camper, Michael Doser, Alberto Rotondi, F. Prelz, Nicola Zurlo, P. Yzombard, Chloé Malbrunot, M. Oberthaler, Angela Gligorova, G. Nebbia, Romualdo Santoro, Davide Pagano, Sebastiano Mariazzi, V. Lagomarsino, Giovanni Cerchiari, F. Guatieri, L. Di Noto, T. Wolz, D. Krasnický, A. Demetrio, J. Robert, Massimo Caccia, V. Petráček, O. Khalidova |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Physical Review A. 100 |
| ISSN: | 2469-9934 2469-9926 |
| Popis: | We investigate experimentally the possibility of enhancing the production of 2S3 positronium atoms by driving the 1S3–3P3 and 3P3–2S3 transitions, overcoming the natural branching ratio limitation of spontaneous decay from 3P3 to 2S3. The decay of 3P3 positronium atoms toward the 2S3 level has been efficiently stimulated by a 1312.2 nm broadband IR laser pulse. The dependence of the stimulating transition efficiency on the intensity of the IR pulse has been measured to find the optimal enhancement conditions. A maximum relative increase of ×(3.1±1.0) in the 2S3 production efficiency, with respect to the case in which only spontaneous decay is present, was obtained. |
| Databáze: | OpenAIRE |
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