The first successful demonstration of broadband laser cooling of positronium (Ps) atoms, obtained within the AEgIS experiment at CERN, is presented here. By employing a custom-designed pulsed alexandrite laser system at 243 nm featuring long-duration pulses of 70 ns and an energy able to saturate the 13S-23P transition over the broad spectrum range of 360 GHz, the temperature of a room-temperature Ps cloud was reduced from 380 K to 170 K in 70 ns. This advancement opens new avenues for precision spectroscopy, antihydrogen production, and fundamental tests with antimatter.
Laser Cooling Positronium with Broadband Laser Pulses / Caravita, R.; Alfaro Campos, S.; Auzins, M.; Berghold, M.; Bergmann, B.; Burian, P.; Brusa, R. S.; Camper, A.; Castelli, F.; Cerchiari, G.; Ciuryło, R.; Chehaimi, A.; Consolati, G.; Doser, M.; Eliaszuk, K.; Ferguson, R.; Germann, M.; Giszczak, A.; Glöggler, L. T.; Graczykowski, Ł.; Grosbart, M.; Guatieri, F.; Gusakova, N.; Gustafsson, F.; Haider, S.; Huck, S.; Hugenschmidt, C.; Janik, M. A.; Januszek, T.; Kasprowicz, G.; Kempny, K.; Khatri, G.; Kłosowski, Ł.; Kornakov, G.; Krumins, V.; Lappo, L.; Linek, A.; Mariazzi, S.; Moskal, P.; Münster, M.; Pandey, P.; Pecak, D.; Penasa, L.; Petracek, V.; Piwiński, M.; Pospisil, S.; Povolo, L.; Prelz, F.; Rangwala, S. A.; Rauschendorfer, T.; Rawat, B. S.; Rienäcker, B.; Rodin, V.; Røhne, O. M.; Sandaker, H.; Sharma, S.; Smolyanskiy, P.; Sowiński, T.; Tefelski, D.; Vafeiadis, T.; Volponi, M.; Welsch, C. P.; Zawada, M.; Zielinski, J.; Zurlo, N.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 3029:1(2025). ( 13th International Workshop on Positron and Positronium Chemistry, PPC 2024 Kanazawa Chamber of Commerce and Industry, jpn 27th October-1st November 2024) [10.1088/1742-6596/3029/1/012002].
Laser Cooling Positronium with Broadband Laser Pulses
Caravita, R.
;Brusa, R. S.;Chehaimi, A.;Ferguson, R.;Guatieri, F.;Mariazzi, S.;Penasa, L.;
2025-01-01
Abstract
The first successful demonstration of broadband laser cooling of positronium (Ps) atoms, obtained within the AEgIS experiment at CERN, is presented here. By employing a custom-designed pulsed alexandrite laser system at 243 nm featuring long-duration pulses of 70 ns and an energy able to saturate the 13S-23P transition over the broad spectrum range of 360 GHz, the temperature of a room-temperature Ps cloud was reduced from 380 K to 170 K in 70 ns. This advancement opens new avenues for precision spectroscopy, antihydrogen production, and fundamental tests with antimatter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
