Efficient two-step Positronium laser excitation to Rydberg levels
Year: 2011
Authors: Cialdi S., Boscolo I., Castelli F., Villa F., Ferrari G., Giammarchi M.G.
Autors Affiliation: Universitą 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-Universitą 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.
Journal/Review: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume: 269 (13) Pages from: 1527 to: 1533
KeyWords: Positronium; Rydberg states; Zeeman and Stark effectsDOI: 10.1016/j.nimb.2011.04.108ImpactFactor: 1.211Citations: 33data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here
