ELFT HÍRADÓ

[mcsete AT physx.u-szeged.hu]

Seminar

Speaker: Dr. István Papp, NAPLIFE project
Institute for Particle and Nuclear Physics
HUN-REN Wigner Research Centre for Physics

Date: 2 pm, 19, December (Thursday) 2024
Location: University of Szeged, Institute of Physics, Budó auditorium & online
https://join.skype.com/CLOTufTRgNtd

Title: Advancements in plasma simulation of nanoplasmonics on the  
quest for laser-induced fusion at the NAPLIFE project

Short abstract:
Rapid progress in technology of lasers and methods learned from  
astrophysics and relativistic heavy ion collisions led to new  
possibilities for fusion [1,2]. When nanoantennas are implanted into  
the target and resonate with the laser frequency, electrons form  
bunches within them. The motion of these bunches generates the  
nanoplasmonic wave. Particle-in-cell simulations are not typically  
employed to describe these interactions. However, this method allows  
for the consideration of additional effects beyond those traditionally  
used [3].
Our recently shown kinetic model with a Hydrogen target indicated that  
the field of these resonating electrons attracts and accelerates the  
surrounding protons. Now we will show the behaviour of multiple  
nanoantennas in array interacting with two-sided irradiation. We will  
show the effects of various size, orientation and shape of  
nanoantennas on the proton energies, we will discuss the dynamics of  
energy absorption under irradiation of short laser infrared pulses at  
above ~10^15 W/cm^2 intensities. These protons are then energetic  
enough to achieve nuclear transmutation and fusion reactions. Without  
resonating nanoantenna there is no such collective proton acceleration.

[1] L.P. Csernai, M. Csete, I.N. Mishustin, A. Motornenko, I.  Papp,  
L.M. Satarov, H. Stöcker & N. Kroó, Radiation-Dominated Implosion with  
Flat Target, Physics and Wave Phenomena, 28 (3)  187-199 (2020).  
(arXiv:1903.10896v3).
[2] L.P. Csernai, Detonation on Timelike Front for Relativistic  
Systems, School of Physics, University of Minnesota, Minneapolis,  
Minnesota, USA, Zh. Eksp. Teor. Fiz. 92, 397-386 (1987), & Sov. Phys.  
JETP 65, 219 (1987).
[3] I. Papp, L. Bravina, M. Csete et al. Kinetic model of resonant  
nanoantennas in polymer for laser induced fusion, Frontiers in  
Physics, 11, 1116023 (2023).

Everyone is welcome to attend.

Dr. Mária Csete


----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.