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Title Techniques for Production and Detection of $2^3S$ Positronium
Author(s) Mariazzi, S (Trento U. ; TIFPA-INFN, Trento) ; Caravita, R (CERN) ; Vespertini, A (Trento U.) ; Camper, A (CERN) ; Rienacker, B (CERN) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Antonello, M (INFN, Milan ; Insubria U., Como) ; Belov, A (Moscow, INR) ; Bonomi, G (Brescia U. ; INFN, Pavia) ; Caccia, M (INFN, Milan ; INFM, Como) ; Castelli, F (INFN, Milan ; Milan U.) ; Cerchiari, G (Heidelberg, Max Planck Inst.) ; Comparat, D (LAC, Orsay) ; Consolati, G (Milan Polytechnic ; INFN, Milan) ; Demetrio, A (Heidelberg U. ; Mainz, Max Planck Inst.) ; Noto, Di (Genoa U. ; INFN, Genoa) ; Doser, M (CERN) ; Fanì, M (CERN ; Genoa U. ; INFN, Genoa) ; Fesel, J (CERN) ; Gerber, S (CERN) ; Gligorova, A (Stefan Meyer Inst. Subatomare Phys.) ; Guatieri, F (Trento U. ; TIFPA-INFN, Trento) ; Hackstock, P (Stefan Meyer Inst. Subatomare Phys.) ; Haider, S (CERN) ; Hinterberger, A (CERN) ; Kellerbauer, A (Heidelberg, Max Planck Inst.) ; Khalidova, O (CERN) ; Krasnicky, D (INFN, Genoa) ; Lagomarsino, V (Genoa U. ; INFN, Genoa) ; Lebrun, P (Lyon, IPN) ; Malbrunot, C (CERN) ; Matveev, V ; Muller, S R (Heidelberg U.) ; Nebbia, G (INFN, Padua) ; Nedelec, P (Lyon, IPN) ; Oberthaler, M (Heidelberg U.) ; Oswald, E (CERN) ; Pagano, D (Brescia U. ; INFN, Pavia) ; Penasa, L (Trento U. ; TIFPA-INFN, Trento) ; Petracek, V (Prague, Tech. U.) ; Prelz, F (INFN, Milan) ; Prevedelli, M (Bologna U.) ; Robert, J (LAC, Orsay) ; Røhne, O M (Oslo U.) ; Rotondi, A (INFN, Pavia ; Pavia U.) ; Sandaker, H (Oslo U.) ; Santoro, R (INFN, Milan ; Insubria U., Como) ; Testera, G (INFN, Genoa) ; Tietje, I C (CERN) ; Widmann, E (Austrian Academy of Sciences) ; Wolz, T (CERN) ; Yzombard, P (Heidelberg, Max Planck Inst.) ; Zimmer, C (CERN ; Heidelberg, Max Planck Inst. ; Heidelberg U.) ; Zurlo, N (INFN, Pavia ; Brescia U.)
Publication 2020
Number of pages 5
In: Acta Phys. Pol. A 137 (2020) 91-95
In: 15th International Workshop on Slow Positron Beam Techniques and Applications, Prague, Czechia, 2-6 Sep 2019, pp.91-95
DOI 10.12693/APhysPolA.137.91
Subject category Physics in General
Abstract In this work, we show recent measurements of $2^{3}S$ long-lived positronium production via spontaneous decay from the 3 3P level. The possibility to tune the velocity of the $2^{3}S$ positronium, excited following this scheme, is presented. In the light of these results, we discuss the use of the $3^{3}P$→ $2^{3}S$ transition to realize a monochromatic pulsed $2^{3}S$ positronium beam with low angular divergence. Preliminary tests of $2^{3}S$ beam production are presented. The possibility to overcome the natural $3^{3}P$ → $2^{3}S$ branching ratio via stimulated emission, and thus increasing the intensity of the $2^{3}S$ source, is also shown. A position-sensitive detector for a pulsed beam of positronium, with spatial resolution of ≈ 90 $\mu m$, is finally described in view of its possible application for the spatial characterization of the $2^{3}S$ beam
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