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CERN Document Server 49 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 0.66 sekunder. 
1.
Temporally Controlled Modulation of Antihydrogen Production and the Temperature Scaling of Antiproton-Positron Recombination / ATHENA Collaboration
2008 - Published in : Phys. Rev. Lett. 101 (2008) 053401 APS Published version, local copy: PDF;
Detaljert visning - Lignende elementer
2.
Production of Slow Protonium in Vacuum / Zurlo, N. (Brescia U.) ; Lodi Rizzini, E. (Brescia U.) ; Venturelli, L. (Brescia U.) ; Amoretti, Marco (INFN, Genoa) ; Macri, M. (INFN, Genoa) ; Testera, G. (INFN, Genoa) ; Variola, A. (INFN, Genoa) ; Amsler, Claude (Zurich U.) ; Pruys, H. (Zurich U.) ; Regenfus, Christian (Zurich U.) et al.
We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H$_2^+$ in a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events in the ATHENA experiment, evidence is presented for protonium production with sub-eV kinetic energies in states around $n$ = 70, with low angular momenta. [...]
arXiv:0801.3193.- 2006 - 9 p. - Published in : Hyperfine Interact. 172 (2006) 97-105 Fulltext: PDF; External link: Fulltext
In : 4th International Conference on Trapped Charged Particles and Fundamental Physics, Parksville, Canada, 3 - 8 Sep 2006, pp.97-105
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3.
Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum / ATHENA Collaboration
We present evidence showing how antiprotonic hydrogen, the quasistable antiproton-proton (pbar-p) bound system, has been synthesized following the interaction of antiprotons with the hydrogen molecular ion (H2+) in a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events, evidence is presented for antiprotonic hydrogen production with sub-eV kinetic energies in states around n=70, and with low angular momenta. [...]
arXiv:0708.3717.- 2006 - 5 p. - Published in : Phys. Rev. Lett. 97 (2006) 153401 Fulltext: PDF; External link: Interactions.org article
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4.
Search for laser-induced formation of antihydrogen atoms / ATHENA Collaboration
2006 - 4 p. - Published in : Phys. Rev. Lett. 97 (2006) 213401 APS Published version, local copy: PDF;
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5.
Progress with cold antihydrogen / Charlton, M (Univ. of Wales Swansea, UK) ; Amoretti, M ; Amsler, C ; Bonomi, G ; Bowe, P D ; Canali, C ; Carraro, C ; Cesar, C L ; Doser, M ; Fontana, A et al.
The creation of cold antihydrogen by the ATHENA and ATRAP collaborations, working at CERN's unique Antiproton Decelerator (AD) facility, has ushered in a new era in atomic physics. This contribution will briefly review recent results from the ATHENA experiment. [...]
2006 - Published in : Nucl. Instrum. Methods Phys. Res., B 247 (2006) 133-7
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6.
Recent Results of the Athena Collaboration / Rotondi, Alberto (Istituto Nazionale di Fisica Nucleare, Pavia ; Pavia University) ; Amoretti, M (Istituto Nazionale di Fisica Nucleare, Genova) ; Amsler, C (University Zurich) ; Bonomi, G (CERN) ; Bowe, P D (University of Aarhus) ; Canali, C (Istituto Nazionale di Fisica Nucleare, Genova ; Universita di Genova) ; Carraro, C (Istituto Nazionale di Fisica Nucleare, Genova ; Universita di Genova) ; Cesar, C L (U. Fed. Rio de Janeiro (main)) ; Charlton, M (University of Wales Swansea) ; Doser, M (CERN) et al.
CERN-SPSC-2006-039 ; SPSC-SR-014. - 2006.
Access to fulltext document
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7.
Results from ATHENA / Rotondi, Alberto (INFN, Pavia ; Pavia U.) ; Amoretti, A (INFN, Genoa) ; Amsler, C (Zurich U.) ; Bonomi, G (CERN) ; Bowe, P D (Aarhus U.) ; Canali, C (INFN, Genoa ; Genoa U.) ; Carraro, C (INFN, Genoa ; Genoa U.) ; Cesar, C L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Doser, Michael (CERN) et al.
CERN-SPSC-2006-007; SPSC-SR-003.- Geneva : CERN, 2005 SR - Published in : AIP Conf. Proc. 796 (2005) 285-290 Access to fulltext document: PDF; External link: Published version from AIP
In : International Conference on Low Energy Antiproton Physics, Bonn, Germany, 16 - 22 May 2005, pp.285-290
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8.
Antihydrogen production temperature dependence / ATHENA Collaboration
Cold antihydrogen atoms were produced by mixing cold samples of antiprotons and positrons. The temperature of the positron plasma was increased by controlled radio-frequency (RF) heating, and the antihydrogen production was measured. [...]
2004 - 9 p. - Published in : Phys. Lett. B 583 (2004) 59-67 Fulltext: HTM;
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9.
Detection of antihydrogen annihilations with a cryogenic pure-CsI crystal detector / Regenfus, C ; Amsler, C ; Glauser, A ; Grögler, D ; Lindelöf, D ; Pruys, H S /ATHENA Collaboration
In the framework of the ATHENA experiment a combined tracking and photon detector, operating close to liquid nitrogen temperatures, was developed to determine simultaneously the vertex of an antiproton annihilation and energy and direction of photons stemming from a positron annihilation. The photon detector consists of 192 pure-CsI scintillation crystals (≈4 cm 3 ) coupled to 5×5 mm 2 avalanche photo-diodes, which are read by electronic chips realised in VLSI CMOS technology. [...]
2003 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 504 (2003) 343-346
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10.
A measurement of the Lorentz angle in silicon strip sensors at cryogenic temperature / Johnson, I (Zurich U.) ; Amsler, C (Zurich U.) ; Chiochia, V (Zurich U.) ; Dorokhov, A (Zurich U.) ; Pruys, H S (Zurich U.) ; Regenfus, C ; Rochet, J /ATHENA Collaboration
A geometric model of charge collection has been developed to measure the Lorentz angle in silicon sensors. The model relates the track inclination to the average cluster width. [...]
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 540 (2005) 113-120 Fulltext: PDF;
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