Efficient two-step Positronium laser excitation to Rydberg levels
Anno: 2011
Autori: Cialdi S., Boscolo I., Castelli F., Villa F., Ferrari G., Giammarchi M.G.
Affiliazione autori: Università degli Studi di Milano, via Celoria 16, 20133 Milano, Italy;
Istituto Nazionale di Fisica Nucleare, sezione di Milano, via Celoria 16, 20133 Milano, Italy;
CNR – Istituto Nazionale di Ottica, BEC Center, via Sommarive 14, 38123 Povo, Trento, Italy;
LENS-Università di Firenze, via Carrara 1, 50019 Sesto Fiorentino, Italy;
Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Trento, via Sommarive 14, 38123 Povo, Trento, Italy
Abstract: Antihydrogen production by charge exchange reaction between Positronium atoms and antiprotons requires efficient excitation of Positronium atoms up to high-n levels (Rydberg levels). A two-step optical excitation, the first from ground to n = 3 and the second from this level to a Rydberg level, is proposed and a suitable laser system is discussed. The requirements on the energy and bandwidth of the excitation laser suggest the use of optical parametric generation technology for both wavelengths. The laser system is composed by two subsystems: one for the generation of 205 nm radiation and the other for the generation of 1670 nm radiation. We have separately developed and tested the laser sources and results are here presented. (C) 2011 Elsevier B.V. All rights reserved.
Giornale/Rivista: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume: 269 (13) Da Pagina: 1527 A: 1533
Parole chiavi: Positronium; Rydberg states; Zeeman and Stark effectsDOI: 10.1016/j.nimb.2011.04.108Citazioni: 33dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui