Article ; Online: Positronium Laser Cooling via the 1^{3}S-2^{3}P Transition with a Broadband Laser Pulse.
2024 Volume 132, Issue 8, Page(s) 83402
Abstract: We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric ...
| Abstract | We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P 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 2^{3}P 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 v_{1D}<3.7×10^{4} ms^{-1}. |
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| Language | English | |||||
| Publishing date | 2024-03-08 | |||||
| Publishing country | United States | |||||
| Document type | Journal Article | |||||
| ZDB-ID | 208853-8 | |||||
| ISSN | 1079-7114 ; 0031-9007 | |||||
| ISSN (online) | 1079-7114 | |||||
| ISSN | 0031-9007 | |||||
| DOI | 10.1103/PhysRevLett.132.083402 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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