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Characterization of a transmission positron/positronium converter for antihydrogen production
- Source :
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2017, 407, pp.55-66. ⟨10.1016/j.nimb.2017.05.059⟩, Nucl.Instrum.Meth.B, Nucl.Instrum.Meth.B, 2017, 407, pp.55-66. ⟨10.1016/j.nimb.2017.05.059⟩, Aghion, S, Amsler, C, Ariga, T, Bonomi, G, Brusa, R S, Caccia, M, Caravita, R, Castelli, F, Cerchiari, G, Comparat, D, Consolati, G, Demetrio, A, Di Noto, L, Doser, M, Ereditato, A, Evans, C, Ferragut, R, Fesel, J, Fontana, A, Gerber, S, Giammarchi, M, Gligorova, A, Guatieri, F, Haider, S, Hinterberger, A, Holmestad, H, Kellerbauer, A, Krasnicliky, D, Lagomarsino, V, Lansonneur, P, Lebrun, P, Malbrunot, C, Mariazzi, S, Matveev, V, Mazzotta, Z, Mueller, S R, Nebbia, G, Nedelec, P, Oberthaler, M, Pacifico, N, Pagano, D, Penasa, L, Petracek, V, Povolo, L, Prelz, F, Prevedelli, M, Ravelli, L, Resch, L, Rienacker, B, Robert, J, Rohne, O M, Rotondi, A, Sacerdoti, M, Sandaker, H, Santoro, R, Scampoli, P, Simon, M, Smestad, L, Sorrentino, F, Testera, G, Tietje, I C, Widmann, E, Yzombard, P, Zimmer, C, Zmeskal, J, Zurlo, N, Andersen, S L, Chevallier, J, Uggerhoj, U I & Lyckegaard, F 2017, ' Characterization of a transmission positron/positronium converter for antihydrogen production ', Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 407, pp. 55-66 . https://doi.org/10.1016/j.nimb.2017.05.059
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- In this work a characterization study of forward emission from a thin, meso-structured silica Received 17 March 2017 positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a similar to 1 mu m thick ultraporous silica film e-gun evaporated onto a 20 nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3 4.10(7) positrons and 10 ns 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 similar to 10%. At least 10% of the positrons implanted with an energy of 3.3 keV are forward-emitted with a scattering angle smaller than 50 and maximum kinetic energy of 1.2 keV. 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. (C) 2017 Elsevier B.V. All rights reserved.
- Subjects :
- Photomultiplier
COLLISIONS
Positronium, Transmission, Antihydrogen
Nuclear and High Energy Physics
GRAPHITE
Astrophysics::High Energy Astrophysical Phenomena
BEAM
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Kinetic energy
Positronium
01 natural sciences
Secondary electrons
010305 fluids & plasmas
SECONDARY-ELECTRON EMISSION
Positron
POSITRON-ANNIHILATION
THIN-FILMS
0103 physical sciences
Transmission
Antihydrogen
mesa-structured silica
010306 general physics
COLD
Instrumentation
Physics
PLASMA
Scattering
SURFACES
positronium, mesa-structured silica
TRANSPORT
Time of flight
Physics::Accelerator Physics
Atomic physics
Subjects
Details
- Language :
- English
- ISSN :
- 0168583X
- Database :
- OpenAIRE
- Journal :
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2017, 407, pp.55-66. ⟨10.1016/j.nimb.2017.05.059⟩, Nucl.Instrum.Meth.B, Nucl.Instrum.Meth.B, 2017, 407, pp.55-66. ⟨10.1016/j.nimb.2017.05.059⟩, Aghion, S, Amsler, C, Ariga, T, Bonomi, G, Brusa, R S, Caccia, M, Caravita, R, Castelli, F, Cerchiari, G, Comparat, D, Consolati, G, Demetrio, A, Di Noto, L, Doser, M, Ereditato, A, Evans, C, Ferragut, R, Fesel, J, Fontana, A, Gerber, S, Giammarchi, M, Gligorova, A, Guatieri, F, Haider, S, Hinterberger, A, Holmestad, H, Kellerbauer, A, Krasnicliky, D, Lagomarsino, V, Lansonneur, P, Lebrun, P, Malbrunot, C, Mariazzi, S, Matveev, V, Mazzotta, Z, Mueller, S R, Nebbia, G, Nedelec, P, Oberthaler, M, Pacifico, N, Pagano, D, Penasa, L, Petracek, V, Povolo, L, Prelz, F, Prevedelli, M, Ravelli, L, Resch, L, Rienacker, B, Robert, J, Rohne, O M, Rotondi, A, Sacerdoti, M, Sandaker, H, Santoro, R, Scampoli, P, Simon, M, Smestad, L, Sorrentino, F, Testera, G, Tietje, I C, Widmann, E, Yzombard, P, Zimmer, C, Zmeskal, J, Zurlo, N, Andersen, S L, Chevallier, J, Uggerhoj, U I & Lyckegaard, F 2017, ' Characterization of a transmission positron/positronium converter for antihydrogen production ', Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 407, pp. 55-66 . https://doi.org/10.1016/j.nimb.2017.05.059
- Accession number :
- edsair.doi.dedup.....af3afdfba066499373bd3d170cad2cdf