Autor: |
Aghion, S., Amsler, C., Antonello, M., Belov, A., Bonomi, G., Brusa, R. S., Caccia, M., Camper, A., Caravita, R., Castelli, F., Cerchiari, G., Comparat, D., Consolati, G., Demetrio, A., Di Noto, L., Doser, M., Evans, C., Fani, M., Ferragut, R., Fesel, J., Fontana, A., Gerber, S., Giammarchi, M., Gligorova, A., Guatieri, F., Hackstock, P., Haider, S., Hinterberger, A., Holmestad, H., Kellerbauer, A., Khalidova, O., Krasnicky, D., Lagormarsino, V., Lansonneur, P., Lebrun, P., Malbrunot, C., Mariazzi, S., Marton, J., Matveev, V., Mazzotta, Z., Muller, S. R., Nebbia, G., Nedelec, P., Oberthaler, M., Pagano, D., Penasa, L., Petracek, V., Prelz, F., Prevedelli, M., Rienaecker, B., Robert, J., Rohne, O. M., Rotondi, A., Sandacker, H., Santoro, R., Smestad, L., Sorrentino, F., Testera, G., Tietje, I. C., Vujanovic, M., Widmann, E., Yzombard, P., Zimmer, C., Zmeskal, J., Zurlo, N. |
Rok vydání: |
2018 |
Předmět: |
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Zdroj: |
Phys. Rev. A 98, 013402 (2018) |
Druh dokumentu: |
Working Paper |
DOI: |
10.1103/PhysRevA.98.013402 |
Popis: |
Producing positronium (Ps) in the metastable $2^3\text{S}$ state is of interest for various applications in fundamental physics. We report here about an experiment in which Ps atoms are produced in this long-lived state by spontaneous radiative decay of Ps excited to the $3^3\text{P}$ level manifold. The Ps cloud excitation is obtained with a UV laser pulse in an experimental vacuum chamber in presence of guiding magnetic field of 25 mT and an average electric field of 300 V/cm. The indication of the $2^3\text{S}$ state production is obtained from a novel analysis technique of single-shot positronium annihilation lifetime spectra. Its production efficiency relative to the total amount of formed Ps is evaluated by fitting a simple rate equations model to the experimental data and found to be $ (2.1 \pm 1.3) \, \% $. |
Databáze: |
arXiv |
Externí odkaz: |
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