Search Results - "Uggerhøj, Ulrik I."

Experimental evidence of quantum radiation reaction in aligned crystals by Wistisen, Tobias N., Di Piazza, Antonino, Knudsen, Helge V., Uggerhøj, Ulrik I.

“…Quantum radiation reaction is the influence of multiple photon emissions from a charged particle on the particle's dynamics, characterized by a significant…”
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Investigation of classical radiation reaction with aligned crystals by Di Piazza, A., Wistisen, Tobias N., Uggerhøj, Ulrik I.

“…Classical radiation reaction is the effect of the electromagnetic field emitted by an accelerated electric charge on the motion of the charge itself. The…”
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Aerosol nucleation induced by a high energy particle beam by Enghoff, Martin B., Pedersen, Jens Olaf Pepke, Uggerhøj, Ulrik I., Paling, Sean M., Svensmark, Henrik

“…We have studied sulfuric acid aerosol nucleation in an atmospheric pressure reaction chamber using a 580 MeV electron beam to ionize the volume of the reaction…”
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Positronium formation from porous silica in backscattering and transmission geometries by Andersen, Søren L., Johansen, Rasmus R., Overgaard, Jakob B., Mortensen, Johan K., Andersen, Kristoffer K., Thomsen, Heine D., Lund, Mikkel D., Chevallier, Jacques, Knudsen, Helge, Uggerhøj, Ulrik I.

“…The Aarhus positron beam line is utilised to measure the positronium formation fraction from porous silica thin films created by the Glancing Angle Deposition…”
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Precision Measurement of Trident Production in Strong Electromagnetic Fields by Nielsen, Christian F, Holtzapple, Robert, Lund, Mads M, Surrow, Jeppe H, Sørensen, Allan H, Sørensen, Marc B, Uggerhøj, Ulrik I

“…We demonstrate experimentally that the trident process e^{-}→e^{-}e^{+}e^{-} in a strong external field, with a spatial extension comparable to the effective…”
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Experimental realization of a new type of crystalline undulator by Wistisen, Tobias N, Andersen, Kristoffer K, Yilmaz, Serdar, Mikkelsen, Rune, Hansen, John Lundsgaard, Uggerhøj, Ulrik I, Lauth, Werner, Backe, Hartmut

“…A new scheme of making crystalline undulators was recently proposed and investigated theoretically by Andriy Kostyuk, concluding that a new type of crystalline…”
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Radiation emission at channeling of electrons in a strained layer Si1-xGex undulator crystal by Backe, H., Krambrich, D., Lauth, W., Andersen, K.K., Lundsgaard Hansen, J., Uggerhøj, Ulrik I.

“…Experiments have been performed at the Mainz Microtron MAMI to explore the radiation emission spectra from a crystalline undulator at electron beam energies of…”
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Experimental evidence for the role of ions in particle nucleation under atmospheric conditions by Svensmark, Henrik, Pedersen, Jens Olaf P, Marsh, Nigel D, Enghoff, Martin B, Uggerhøj, Ulrik I

“… This suggests that the ions are active in generating an atmospheric reservoir of small thermodynamically stable clusters, which are important for nucleation…”
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Elastic photonuclear cross sections for bremsstrahlung from relativistic ions by Mikkelsen, Rune E., Sørensen, Allan H., Uggerhøj, Ulrik I.

“…In this paper, we provide a procedure to calculate the bremsstrahlung spectrum for virtually any relativistic bare ion with charge 6e or beyond, Z⩾6, in…”
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Vacuum birefringence by Compton backscattering through a strong field by Wistisen, Tobias N., Uggerhøj, Ulrik I.

“…We propose a novel scheme to measure nonlinear effects in electrodynamics arising from QED corrections. Our theoretical starting point is the…”
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Direct measurement of the formation length of photons by Andersen, Kristoffer K, Andersen, Søren L, Esberg, Jakob, Knudsen, Helge, Mikkelsen, Rune, Uggerhøj, Ulrik I, Sona, Pietro, Mangiarotti, Alessio, Ketel, Tjeerd J, Ballestrero, Sergio

“…We report the first observation of a shoulder in the radiation spectrum from GeV electrons in a structured target consisting of two thin and closely spaced…”
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Radiation emission at channeling of electrons in a strained layer undulator crystal by Backe, H., Krambrich, D., Lauth, W., Andersen, K.K., Lundsgaard Hansen, J., Uggerhøj, Ulrik I.

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Bremsstrahlung from Relativistic Heavy Ions in a Fixed Target Experiment at the LHC by Mikkelsen, Rune E., Sørensen, Allan H., Uggerhøj, Ulrik I.

“…We calculate the emission of bremsstrahlung from lead and argon ions in ultraperipheral collisions in a fixed target experiment (AFTER) that uses the LHC…”
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The biological effectiveness of antiproton irradiation by Holzscheiter, Michael H., Bassler, Niels, Agazaryan, Nzhde, Beyer, Gerd, Blackmore, Ewart, DeMarco, John J., Doser, Michael, Durand, Ralph E., Hartley, Oliver, Iwamoto, Keisuke S., Knudsen, Helge V., Landua, Rolf, Maggiore, Carl, McBride, William H., Møller, Søren Pape, Petersen, Jørgen, Skarsgard, Lloyd D., Smathers, James B., Solberg, Timothy D., Uggerhøj, Ulrik I., Vranjes, Sanja, Withers, H. Rodney, Wong, Michelle, Wouters, Bradly G.

“…Antiprotons travel through tissue in a manner similar to that for protons until they reach the end of their range where they annihilate and deposit additional…”
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Laboratory Test of the Galilean Universality of the Free Fall Experiment by Christensen, Rasmus S, Teiwes, Ricky, Petersen, Steffen V, Uggerhøj, Ulrik I, Jacoby, Bo

“…There is a popular myth that Galileo dropped two objects of the same shape but different mass, noted their equal fall time, and concluded that gravitational…”
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Bubble detector measurements of a mixed radiation field from antiproton annihilation by Bassler, Niels, Knudsen, Helge, Møller, Søren Pape, Petersen, Jørgen B., Rahbek, Dennis, Uggerhøj, Ulrik I.

“…In the light of recent progress in the study of the biological potential of antiproton tumour treatment it is important to be able to characterize the neutron…”
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The interaction of relativistic particles with strong crystalline fields by Uggerhoej, Ulrik I.

“…Crystals present a uniquely simple environment for the investigation of strong electromagnetic fields. When energetic charged particles are incident on…”
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Biological effectiveness of antiproton annihilation by Holzscheiter, Michael H., Agazaryan, Nzhde, Bassler, Niels, Beyer, Gerd, DeMarco, John J., Doser, Michael, Ichioka, Toshiyasu, Iwamoto, Keisuke S., Knudsen, Helge V., Landua, Rolf, Maggiore, Carl, McBride, William H., Møller, Søren Pape, Petersen, Jorgen, Smathers, James B., Skarsgard, Lloyd D., Solberg, Timothy D., Uggerhøj, Ulrik I., Withers, H.Rodney, Vranjes, Sanja, Wong, Michelle, Wouters, Bradly G.

“…We describe an experiment designed to determine whether or not the densely ionizing particles emanating from the annihilation of antiprotons produce an…”
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Precision Measurement of Trident Production in Strong Electromagnetic Fields by Nielsen, Christian F, Holtzapple, Robert, Lund, Mads M, Surrow, Jeppe H, Sørensen, Allan H, Uggerhøj, Ulrik I

“…We demonstrate experimentally that the trident process $e^-\rightarrow e^-e^+e^-$ in a strong external field, with a spatial extension comparable to the…”
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Radiation Reaction near the Classical Limit in Aligned Crystals by Nielsen, Christian F, Justesen, Jens B, Sørensen, Allan H, Uggerhøj, Ulrik I, Holtzapple, Robert

“…Phys. Rev. D 102, 052004 (2020) An accelerated charged particle emits electromagnetic radiation. If the driving force is sufficiently strong, the radiated…”
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