[institut] Reminder - SCL seminar: Thomas Grismayer, Monday, 15 September, 14:00

[Marija Mitrovic Dankulov]

Dear colleagues,

You are cordially invited to the SCL seminar of the Center for the Study 
of Complex Systems, which will be held on Monday, 15 September 2025 at 
14:00 in the "Zvonko Marić" lecture hall of the Institute of Physics 
Belgrade. The talk entitled

Towards Laboratory Electron-Positron Plasma via Electromagnetic Showers

will be given by Thomas Grismayer (GoLP/IPFN Instituto Superior Tecnico, 
Universidade de Lisboa). The abstract of the talk:

When a relativistic electron interacts with a strong field, the 
combination of photon emission and pair creation leads to an 
Electromagnetic Shower (EMS). New Petawatt laser facilities offer an 
opportunity to accelerate multi-GeV electrons using plasma technology, 
to generate strong laser electromagnetic fields, and are therefore ideal 
for probing EMS and pursuing the long-standing objective of generating a 
pair plasma in the laboratory [1]. Despite efforts in understanding the 
shower properties, a complete theory of showers in all regimes is yet to 
be found.

We use a generation-splitting method and derive expressions for the 
shower multiplicity and particle spectra at short and long times. We 
apply our approach to showers in the Coulomb field of neutral targets 
and strong external fields. The analytical results are compared with PIC 
codes, Geant4, and a Monte Carlo code. Our results are predictive for 
realistic future experiments: the collisions of electrons with a 
high-intensity laser [2]. Additionally, we consider the interaction of 
an electron beam with matter to provide a simple criterion for pair 
plasma production as a function of the incident beam properties [3].

Acknowledgments: FCT (Portugal) Grant No. CEECIND/04050/2021 and ANR 
(g4QED project, Grant No.. ANR-23-CE30-0011)


[1] G. Sarri et al., Nature Communications 10.1038/NCOMMS7747 (2015); C. 
D. Arrowsmith et al., Nature Communications 15, 
10.1038/s41467-024-49346-2 (2024), H. Chen and F. Fiuza, Physics of 
Plasmas 30, 020601 (2023).
[2] M. Pouyez et al., Physical Review Letters 134.13, 135001 (2025)
[3] M. Pouyez et al., arXiv:2505.18843 (2025)

Best regards,
Marija Mitrović Dankulov

-- 
Marija Mitrovic Dankulov
E-mail: mitrovic at ipb.ac.rs

Phone: +381 11 3713068
Fax: +381 11 3162190

Scientific Computing Laboratory
Institute of Physics Belgrade
Pregrevica 118, 11080 Belgrade, Serbia