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 Online-Ressource | |
| Verfasst von: | Aghion, Stefano [VerfasserIn]  |
| Demetrio, Andrea [VerfasserIn] | |
| Müller, Simon R. [VerfasserIn] | |
| Oberthaler, Markus K. [VerfasserIn] | |
| Zimmer, Christoph [VerfasserIn] | |
| Titel: | Characterization of a transmission positron/positronium converter for antihydrogen production |
| Verf.angabe: | S. Aghion, C. Amsler, T. Ariga, G. Bonomi, R.S. Brusa, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Consolati, A. Demetrio, L. Di Noto, M. Doser, A. Ereditato, C. Evans, R. Ferragut, J. Fesel, A. Fontana, S. Gerber, M. Giammarchi, A. Gligorova, F. Guatieri, S. Haider, A. Hinterberger, H. Holmestad, A. Kellerbauer, D. Krasnický, V. Lagomarsino, P. Lansonneur, P. Lebrun, C. Malbrunot, S. Mariazzi, V. Matveev, Z. Mazzotta, S.R. Müller, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, D. Pagano, L. Penasa, V. Petracek, L. Povolo, F. Prelz, M.Rerevedelli, L. Ravelli, L. Resch, B. Rienäcker, J. Robert, O.M. Røhne, A. Rotondi, M. Sacerdoti, H. Sandaker, R. Santoro, P. Scampoli, M. Simon, L. Smestad, F. Sorrentino, G. Testera, I.C. Tietje, E. Widmann, P. Yzombard, C. Zimmer, J. Zmeskal, N. Zurlo, S.L. Andersen, J. Chevallier, U.I. Uggerhøj, F. Lyckegaard |
| E-Jahr: | 2017 |
| Jahr: | 6 June 2017 |
| Umfang: | 12 S. |
| Teil: | volume:407 |
| year:2017 | |
| pages:55-66 | |
| extent:12 | |
| Fussnoten: | Gesehen am 14.12.2018 |
| Titel Quelle: | Enthalten in: Nuclear instruments & methods in physics research / B |
| Ort Quelle: | Amsterdam [u.a.] : Elsevier, 1984 |
| Jahr Quelle: | 2017 |
| Band/Heft Quelle: | 407(2017), Seite 55-66 |
| ISSN Quelle: | 1872-9584 |
| Abstract: | In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a ∼1μm thick ultraporous silica film e-gun evaporated onto a 20nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3-4·107 positrons and 10ns temporal width. The forward emission of implanted positrons and secondary electrons was investigated with a micro-channel plate - phosphor screen assembly, connected either to a CCD camera for imaging of the impinging particles, or to a fast photomultiplier tube to extract information about their time of flight. The maximum Ps formation fraction was estimated to be ∼10%. At least 10% of the positrons implanted with an energy of 3.3keV are forward-emitted with a scattering angle smaller than 50° and maximum kinetic energy of 1.2keV. At least 0.1-0.2 secondary electrons per implanted positron were also found to be forward-emitted with a kinetic energy of a few eV. The possible application of this kind of positron/positronium converter for antihydrogen production is discussed. |
| DOI: | doi:10.1016/j.nimb.2017.05.059 |
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt. Volltext ; Verlag: http://dx.doi.org/10.1016/j.nimb.2017.05.059 |
| Volltext: http://www.sciencedirect.com/science/article/pii/S0168583X17306596 | |
| DOI: https://doi.org/10.1016/j.nimb.2017.05.059 | |
| Datenträger: | Online-Ressource |
| Sprache: | eng |
| Sach-SW: | Antihydrogen |
| Positronium | |
| Transmission | |
| K10plus-PPN: | 1572080132 |
| Verknüpfungen: | → Zeitschrift |
