Glöggler, LT, Gusakova, N, Rienäcker, B, Camper, A, Caravita, R, Huck, S, Volponi, M, Wolz, T, Penasa, L, Krumins, V et al (show 43 more authors)
(2024)
Positronium Laser Cooling via the
1
3
S
−
2
3
P
Transition with a Broadband Laser Pulse.
Physical Review Letters, 132 (8).
083402-.
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Text
PhysRevLett.132.083402.pdf - Open Access published version Download (1MB) | Preview |
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}.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AEḡIS Collaboration |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 26 Feb 2024 08:59 |
| Last Modified: | 01 May 2024 10:32 |
| DOI: | 10.1103/physrevlett.132.083402 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3178871 |
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