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Radiation from thin, structured targets (CERN NA63) / Dizdar, Alper (Istanbul U.)
Experimental results from the CERN NA63 experiment concerning radiation from thin, structured targets will be presented. When the targets are thin, the LPM effect on the bremsstrahlung vanishes, and other mechanisms such as the TSF effect (Ternovskii, Shul'ga, Fomin) and interference from the thin plates come in to the scene. [...]
2010 - 10 p. - Published in : 10.1142/9789814307017_0005
In : 51st Workshop of the INFN ELOISATRON Project: Charged and Neutral Particles Channeling Phenomena, Erice, Italy, 25 Oct – 1 Nov 2008, pp.62-71

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Distorted Coulomb field of the scattered electron / CERN NA63 Collaboration
Experimental results for the radiation emission from ultrarelativistic electrons in targets of 0.03%–5% radiation length is presented. For the thinnest targets, the radiation emission is in accordance with the Bethe-Heitler formulation of bremsstrahlung, the target acting as a single scatterer. [...]
2010 - Published in : Phys. Rev. D 81 (2010) 052003 APS published version, local copy: PDF;

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Experimental investigation of strong field trident production / CERN NA63 Collaboration
We show by experiment that an electron impinging on an electric field that is of critical magnitude in its rest frame, may produce an electron-positron pair. Our measurements address higher-order QED, using the strong electric fields obtainable along particular crystallographic directions in single crystals. [...]
2010 - Published in : Phys. Rev. D 82 (2010) 072002 APS published version, local copy: PDF;

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On the macroscopic formation length for GeV photons / CERN NA63 Collaboration
Experimental results for the radiative energy loss of 206 and 234 GeV electrons in 5–10 μm thin Ta targets are presented. An increase in radiation emission probability at low photon energies compared to a 100 μm thick target is observed. [...]
2009 - Published in : Phys. Lett. B 672 (2009) 323-327

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Direct measurement of the Chudakov effect / CERN NA63 Collaboration
Experimental results for the restricted energy loss of pairs created from 1–178 GeV photons in a thin Au target and subsequently passing a CCD detector are presented. It is shown that pairs—when detected close to the creation vertex—suffer a reduced energy loss due to the internal screening of the charges constituting the pair. [...]
2008 - Published in : Phys. Rev. Lett. 100 (2008) 164802 APS Published version, local copy: PDF;

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Restricted energy loss of ultrarelativistic particles in thin targets: A search for deviations from constancy / CERN NA63 Collaboration
Experimental results for the restricted energy loss of ultrarelativistic electrons, with Lorentz factors up to 3x10^5, in a 535@mm thin silicon detector are presented. The combination of high Lorentz factors and thin targets, opens for the possibi lity to study two mutually excluding effects, both based upon theory and on scarce experimental observations. [...]
2010 - Published in : Nucl. Instrum. Methods Phys. Res., B 268 (2010) 1412-1415

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Experimental investigations of synchrotron radiation at the onset of the quantum regime / Andersen, K.K. (Aarhus U.) ; Esberg, J. (Aarhus U.) ; Knudsen, H. (Aarhus U.) ; Thomsen, H.D. (Aarhus U.) ; Uggerhoj, U.I. (Aarhus U.) ; Sona, P. (Florence U.) ; Mangiarotti, A. (Coimbra U.) ; Ketel, T.J. (Vrije U., Amsterdam) ; Dizdar, A. (Istanbul U.) ; Ballestrero, S. (Johannesburg U.) /CERN NA63
The classical description of synchrotron radiation fails at large Lorentz factors, $\gamma$, for relativistic electrons crossing strong transverse magnetic fields $B$. In the rest frame of the electron this field is comparable to the so-called critical field $B_0 = 4.414\cdot10^9$ T. [...]
arXiv:1206.6577.- 2012 - 11 p. - Published in : Phys. Rev. D 86 (2012) 072001 APS published version, local copy: PDF; Preprint: PDF; External link: Preprint

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Electromagnetic processes in strong crystalline fields / NA63 Collaboration
As an addendum to the NA63 proposal cite{Ande05}, we propose to measure 1) the Landau-Pomeranchuk-Migdal (LPM) effect in low-$Z$ targets, 2) Magnetic suppression of incoherent bremsstrahlung resulting from exposure to an external field during the emission event, and 3) the bremsstrahlung emission from relativistic ($gamma=170$), fully stripped Pb nuclei penetrating various amorphous targets. [...]
CERN-SPSC-2009-038 ; SPSC-P-327-ADD-1. - 2009.
Original Document (SPSC-P-327) - Fulltext

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Vegeu també: autors amb noms similars
1	Dizdar, A.
2	Dizdar, Alper

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