Speaker
Description
Recently laser induced fusion with simultaneous volume ignition, a spin-off from relativistic heavy ion collisions was proposed [1]. This requires two sided irradiation configuration, experiments with similar setups were proved to be successful [3]. In our case, implanted nano antennas regulated and amplified the light absorption in the fusion target [2]. We studied recently the resilience of the nanoantennas in vacuum and also in UDMA-TEGDMA medium [4, 5]. These studies concluded that the lifetime of the plasmonic effect is longer in medium, however, less energy was observed in the UDMA-TEGDMA copolymer, due to the smaller resonant size of gold nanoantenna than in case of Vacuum. Here we show how the plasmonic effect behaves in an environment fully capable of ionization, surrounded by Hydrogen atoms close to liquid densities. We performed numerical simulations treating the electrons of gold in the conduction band as strongly coupled plasma. The results show that the protons close to the nanorod’s surface follow the collectively moving electrons rather than the incoming electric field of the light. The results also show that this electron screening effect is also dependent on the laser intensity.
References
[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] M. Csete, A. Szenes, E. Tóth, D. Vass, O. Fekete, B. Bánhelyi, I. Papp, T. S. Biró, L. P. Csernai, N. Kroó (NAPLIFE Collaboration), Comparative study on the uniform energy deposition achievable via optimized plasmonic nanoresonator distributions, Plasmonics 17 (2), 775-787 (2022).
[3] G. Zhang, M. Huang, A. Bonasera, Y. G. Ma, B. F. Shen, H. W. Wang, J. C. Xu, G. T. Fan, H. J. Fu, H. Xue, H. Zheng, L. X. Liu, S. Zhang, W. J. Li, X. G. Cao, X. G. Deng, X. Y. Li, Y. C. Liu, Y. Yu, Y. Zhang, C. B. Fu, and X. P. Zhang, Nuclear probes of an out-of-equilibrium plasma at the highest compression, Phys. Lett. A 383 (19), 2285-2289 (2019).
[4] István Papp, Larissa Bravina, Mária Csete, Archana Kumari, Igor N. Mishustin, Dénes Molnár, Anton Motornenko, Péter Rácz, Leonid M. Satarov, Horst Stöcker, Daniel D. Strottman, András Szenes, Dávid Vass, Tamás S. Biró, László P. Csernai, and Norbert Kroó, (NAPLIFE Collaboration), Kinetic Model Evaluation of the Resilience of Plasmonic Nanoantennas for Laser-Induced Fusion, PRX Energy, 1, 023001 (2022).
[5] Papp István, Bravina Larissa, Csete Mária, Kumari Archana, Mishustin Igor N., Motornenko Anton, Rácz Péter, Satarov Leonid M., Stöcker Horst, Strottman Daniel D., Szenes András, Vass Dávid, Szokol Ágnes Nagyné, Kámán Judit, Bonyár Attila, Biró Tamás S., Csernai László P., Kroó Norbert, Kinetic model of resonant nanoantennas in polymer for laser induced fusion, Frontiers in Physics, 11, 1116023 (2023).
