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CERN Document Server 2,015 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.99 sekúnd. 
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Experimental evidence of quantum radiation reaction in aligned crystals / Wistisen, Tobias N. (Aarhus U.) ; Di Piazza, Antonino (Heidelberg, Max Planck Inst.) ; Knudsen, Helge V. (Aarhus U.) ; Uggerhøj, Ulrik I. (Aarhus U.)
Radiation reaction is the influence of the electromagnetic field emitted by a charged particle on the dynamics of the particle itself. Here we report experimental radiation emission spectra from ultrarelativistic positrons in silicon in a regime where both quantum and radiation-reaction effects dominate the dynamics of the positrons. [...]
arXiv:1704.01080.- 2018-02-23 - 14 p. - Published in : Nature Commun. 9 (2018) 795 Fulltext: arXiv:1704.01080 - PDF; s41467-018-03165-4 - PDF;
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Investigation of classical radiation reaction with aligned crystals / Di Piazza, A. (Heidelberg, Max Planck Inst.) ; Wistisen, Tobias N. (Aarhus U.) ; Uggerhøj, Ulrik I. (Aarhus U.)
Classical radiation reaction is the effect of the electromagnetic field emitted by an accelerated electric charge on the motion of the charge itself. The self-consistent underlying classical equation of motion including radiation-reaction effects, the Landau-Lifshitz equation, has never been tested experimentally, in spite of the first theoretical treatments of radiation reaction having been developed more than a century ago. [...]
arXiv:1503.05717.- 2017-02-10 - 5 p. - Published in : Phys. Lett. B 765 (2017) 1-5 Article from SCOAP3: PDF; Fulltext: PDF; External link: Preprint
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3.
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Laser cooling of antihydrogen atoms / ALPHA Collaboration
The photon—the quantum excitation of the electromagnetic field—is massless but carries momentum. A photon can therefore exert a force on an object upon collision1. [...]
2021 - 18 p. - Published in : Nature 592 (2021) 35-52 Fulltext from Publisher: PDF; External link: Interactions.org article
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Characterization of the 1S–2S transition in antihydrogen / Ahmadi, M (Liverpool U.) ; Alves, B X R (Aarhus U.) ; Baker, C J (Swansea U.) ; Bertsche, W (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Capra, A (TRIUMF) ; Carruth, C (UC, Berkeley) ; Cesar, C L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Cohen, S (Ben Gurion U. of Negev) ; Collister, R (TRIUMF) et al.
In 1928, Dirac published an equation that combined quantum mechanics and special relativity. Negative-energy solutions to this equation, rather than being unphysical as initially thought, represented a class of hitherto unobserved and unimagined particles—antimatter. [...]
2018 - 5 p. - Published in : Nature 557 (2018) 71-75 Fulltext: s41586-018-0017-2 - PDF; 10.1038_s41586-018-0017-2 - PDF; External link: INTERACTIONS
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Radiation-reaction force on a moving mirror / Eberlein, C
SUSX-TH-93-22. - 1993. - 13 p. CERN library copies
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Experimental verification of the Landau–Lifshitz equation / Nielsen, C F (Aarhus U.) ; Justesen, J B (Aarhus U.) ; Sørensen, A H (Aarhus U.) ; Uggerhøj, U I (Aarhus U.) ; Holtzapple, R (Cal. Poly.) /CERN NA63 Collaboration
The Landau–Lifshitz (LL) equation has been proposed as the classical equation to describe the dynamics of a charged particle in a strong electromagnetic field when influenced by radiation reaction. Until recently, there has been no clear experimental verification. [...]
2021 - 8 p. - Published in : New J. Phys. 23 (2021) 085001 Fulltext: PDF;
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Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production / Baker, C J (Swansea U.) ; Bertsche, W (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Capra, A (TRIUMF) ; Cesar, C L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Mathad, A Cridland (Swansea U.) ; Eriksson, S (Swansea U.) ; Evans, A (Calgary U.) ; Evetts, N (British Columbia U.) ; Fabbri, S (Manchester U.) et al.
The positron, the antiparticle of the electron, predicted by Dirac in 1931 and discovered by Anderson in 1933, plays a key role in many scientific and everyday endeavours. Notably, the positron is a constituent of antihydrogen, the only long-lived neutral antimatter bound state that can currently be synthesized at low energy, presenting a prominent system for testing fundamental symmetries with high precision. [...]
2021 - 8 p. - Published in : Nature Commun. 12 (2021) 6139 Fulltext: PDF;
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Radiation-Reaction Trapping of Electrons in Extreme Laser Fields / Ji, L L (Heinrich Heine U., Dusseldorf) ; Pukhov, A (Heinrich Heine U., Dusseldorf) ; Kostyukov, I Yu (Nizhnii Novgorod, IAP) ; Shen, B F (Shanghai, Inst. Optics, Fine Mech.) ; Akli, K (Ohio State U.)
A radiation-reaction trapping (RRT) of electrons is revealed in the near-QED regime of laser-plasma interaction. Electrons quivering in laser pulse experience radiation reaction (RR) recoil force by radiating photons. [...]
CERN-ACC-2014-0051.- Geneva : CERN, 2014 - Published in : Physical Review Letters Fulltext: PDF;
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Observation of the effect of gravity on the motion of antimatter / ALPHA Collaboration
Einstein’s general theory of relativity from 19151 remains the most successful description of gravitation. From the 1919 solar eclipse2 to the observation of gravitational waves3, the theory has passed many crucial experimental tests. [...]
2023 - 23 p. - Published in : Nature 621 (2023) 716-722 Fulltext: PDF; External links: Space.com article; CERN News article; ScienceNews article; Interactions.org article; Physics article; ScienceAlert article; Phys.org article; SciTechDaily article; Physics World article; New York Times article; symmetry magazine article
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Search for beta-delayed proton emission from $^{11}$Be / Riisager, K. (Aarhus U.) ; Borge, M.J.G. (CERN ; Madrid, Inst. Estructura Materia) ; Briz, J.A. (Madrid, Inst. Estructura Materia) ; Carmona-Gallardo, M. (Madrid U.) ; Forstner, O. (Vienna U.) ; Fraile, L.M. (Madrid U.) ; Fynbo, H.O.U. (Aarhus U.) ; Garzon Camacho, A. (Madrid, Inst. Estructura Materia) ; Johansen, J.G. (Aarhus U.) ; Jonson, B. (Chalmers U. Tech.) et al.
We report on an attempt to reproduce the observation of $\beta^-$-delayed proton emission from $^{11}$Be through detection of the final state nucleus $^{10}$Be with accelerator mass spectrometry. Twelve samples were collected at the ISOLDE facility at CERN at different separator settings, allowing tests of different sources of contamination to be carried out. [...]
arXiv:2001.02566.- 2020-03-30 - 8 p. - Published in : Eur. Phys. J. A 56 (2020) 100 Fulltext: PDF;
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