Data di Pubblicazione:
2024
Abstract:
We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 13S-23P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric field-free environment. We observe two different laser-induced effects. The first effect is an increase in the number of atoms in the ground state after the time Ps has spent in the long-lived 23P states. The second effect is one-dimensional Doppler cooling of Ps, reducing the cloud's temperature from 380(20) to 170(20) K. We demonstrate a 58(9)% increase in the fraction of Ps atoms with v1D<3.7×104 ms-1.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Gloggler, L. T.; Gusakova, N.; Rienacker, B.; Camper, A.; Caravita, R.; Huck, S.; Volponi, M.; Wolz, T.; Penasa, L.; Krumins, V.; Gustafsson, F. P.; Comparat, D.; Auzins, M.; Bergmann, B.; Burian, P.; Brusa, R. S.; Castelli, F.; Cerchiari, G.; Ciurylo, R.; Consolati, G.; Doser, M.; Graczykowski, L.; Grosbart, M.; Guatieri, F.; Haider, S.; Janik, M. A.; Kasprowicz, G.; Khatri, G.; Kosowski, L.; Kornakov, G.; Lappo, L.; Linek, A.; Malamant, J.; Mariazzi, S.; Petracek, V.; Piwinski, M.; Pospisil, S.; Povolo, L.; Prelz, F.; Rangwala, S. A.; Rauschendorfer, T.; Rawat, B. S.; Rodin, V.; Rohne, O. M.; Sandaker, H.; Smolyanskiy, P.; Sowinski, T.; Tefelski, D.; Vafeiadis, T.; Welsch, C. P.; Zawada, M.; Zielinski, J.; Zurlo, N.
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