Aarhus University Seal / Aarhus Universitets segl

Elementary Particles and Their Interaction with Strong Electromagnetic Fields

PhD defence, Friday 10 december. Christian Flohr Nielsen

2021.12.10 | Karen Konradi

Christian Flohr Nielsen

During his PhD studies, Christian studied the interaction between elementary charged particles and extremely strong electromagnetic fields through both simulations and experiments.  For the electromagnetic field strengths investigated, the regular theory of quantum electrodynamics breaks down and new theoretical models must be applied.  The talk will mainly focus on the topic of radiation reaction, which has been studied through experiments at CERN, in a regime where the force a charged particle experiences, when emitting a photon, becomes much greater than the external force acting on the particle. This has been investigated by measuring the single photon spectrum emitted by 40-80 GeV electrons and positrons traversing 1-6 mm thick oriented silicon and diamond crystals.

This summary was prepared by the PhD student.

 

Time:  Friday, 10 december, 14:00

Place: 1525-626, Department of Physics and Astronomy, Ny munkegade 120, Aarhus C.

The PhD defence can be seen online. To receive a link to the event, please send an e-mail to ulrik@phys.au.dk.

Title of PhD thesis: Elementary Particles and Their Interaction with Strong Electromagnetic Fields

Contact information: Christian Flohr Nielsen, e-mail: Christianfn@phys.au.dk , tel.: +45 20429739

Members of the assessment committee:

Professor Beate Heinemann, Albert-Ludwigs-Universitaet, Physikalisches Institut, Freiburg, Germany.

Associate Professor Ben King, School of Engineering, Computing and Mathematics, Faculty of Science and Engineering, University of Plymouth, Plymouth, United Kingdom.

Associate Professor Karsten Riisager, Department of Physics and Astronomy, Aarhus University (chair)

Main supervisor:

Head of Department Ulrik I. Uggerhøj, Department of Physics and Astronomy, Aarhus University (chair), Aarhus University, Denmark

Co-supervisor:

Associate Professor,Allan H Sørensen, Department of Physics and Astronomy, Aarhus University (chair), Aarhus University, Denmark

Language: The PhD dissertation will be defended in English

 

The defence is public.

The PhD thesis is available for reading at the Graduate School of Natural Sciences/GSNS,

Katrinebjergvej 89F, building 5132, 8200 Aarhus N.

PhD defence
16882 / i43