FOR2783 2022

Sitzung

Electron-positron pair creation

12.09.2022, 16:00

Lecture hall (LMU Munich - Garching)

1. Strong-field Breit-Wheeler pair production with bremsstrahlung gamma-rays in the perturbative-to-nonperturbative transition regime

Alexandra Eckey (Heinrich-Heine-University Düsseldorf)

12.09.22, 16:00

Electron-positron pair creation

Oral

Motivated by corresponding experimental prospects (such as E3 or LUXE at DESY) we study strong-field Breit-Wheeler pair production by bremsstrahlung gamma-rays propagating through a high-intensity optical laser wave. The influence of the broad frequency spectrum of the bremsstrahlung on the properties of the process in the transition region between the perturbative and the non-perturbative...

4. The role of laser focusing in nonlinear Breit-Wheeler pair production from collisions of bremsstrahlung $\gamma$ quanta and a tightly focused laser pulse

Alina Golub (Heinrich-Heine-Universität Düsseldorf)

12.09.22, 16:45

Electron-positron pair creation

Oral

Current experimental efforts toward the detection of the nonperturbative nonlinear strong-field regime of Breit-Wheeler pair creation plan to combine incoherent sources of GeV $\gamma$ quanta and tightly focussed optical laser pulses. This endeavour calls for a theoretical understanding of how the pair yields depend on the applied laser field profile [1]. In the present discussion, we provide...

11. The non-linear dynamical numerical solution of quantum electromagnetism for purely time-dependent electric scalar fields

Yukiko Song (Chair Ruhl, LMU)

13.09.22, 09:15

Electron-positron pair creation

In the paper Relativistic Quantum Transport Theory for
Electrodynamics by Zhuang, Heinz et al. a complete set of kinetic
equations for the covariant equal-time formulation of the quantum
kinetic theory is derived. We expand on this theory by computing
numerical solutions for time-dependent electric fields in the Schwinger
approximation. Early results suggest an important role of the...

8. First background measurements at CALA

Felipe Salgado (FSU Jena / Helmholtz-Institut Jena)

14.09.22, 09:15

Electron-positron pair creation

Oral

Updates on the E3 experiment at CALA and the first background measurements with the single particle detectors.

9. Update on the status of E3-experiments at CALA

Katinka von Grafenstein (Ludwig-Maximilians-Universität)

14.09.22, 10:00

Electron-positron pair creation

Oral

We will present an update on project related preparatory studies at CALA.