Electromagnetic pulse emission from target holders during short-pulse laser interactions

0534144 - FZÚ 2021 RIV US eng J - Journal Article
Minenna, D.F.G. - Poyé, A. - Bradford, Ph. - Woolsey, N. - Tikhonchuk, Vladimir
Electromagnetic pulse emission from target holders during short-pulse laser interactions.
Physics of Plasmas. Roč. 27, č. 6 (2020), s. 1-10, č. článku 063102. ISSN 1070-664X. E-ISSN 1089-7674
R&D Projects: GA MŠMT LQ1606
Institutional support: RVO:68378271
Keywords : electromagnetic pulse * laser target interaction * high-intensity laser * target holder
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.023, year: 2020
Method of publishing: Limited access
https://doi.org/10.1063/5.0006666

For the first time, a global model of electromagnetic pulse (EMP) emission connects charge separation in the laser target to quantitative measurements of the electromagnetic field. We present a frequency-domain dipole antenna model which predicts the quantity of charge accumulated in a laser target as well as the EMP amplitude and frequency. The model is validated against measurements from several high-intensity laser facilities, providing insight into target physics and informing the design of next-generation ultra-intense laser facilities. EMP amplitude is proportional to the total charge accumulated on the target, but we demonstrate that it is not directly affected by target charging time (and therefore the laser pulse duration), provided the charging time is shorter than the antenna characteristic time.

Permanent Link: http://hdl.handle.net/11104/0312374