Basic features of electromagnetic pulse generated in a laser-target chamber at 3-TW laser facility PALS

Plasma Physics by Laser and Applications 2013 Conference

De Marco, M.^1 ; Pfeifer, M.^1 ; Krousky, E.^1 ; Krasa, J.^1 ; Cikhardt, J.^2 ; Klir, D.^2 ; Nassisi, V.^3,4

Institute of Physics, ASCR, V.v.i., Na Slovance 2, 182 21 Praha 8, Czech Republic^1

Czech Technical University, Technická 2, 166 27 Prague 6, Praha 6, Czech Republic^2

LEAS, Dipartimento di Matematica e Fisica, Università Del Salento, Italy^3

INFN Sezione di Lecce, Via Arnesano, sn, 73100 Lecce, Italy^4

关键词: Hard X ray;    Laser facilities;    Laser targets;    Photon energy;    Radio frequencies;    Solid targets;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/508/1/012007/pdf
DOI  :  10.1088/1742-6596/508/1/012007

来源: IOP

【 摘 要 】

We describe the radiofrequency emission taking place when 300 ps laser pulses irradiate various solid targets with an intensity of 1016W/cm2. The emission of intense electromagnetic pulses was observed outside the laser target chamber by two loop antennas up to 1 GHz. Electromagnetic pulses can be 800 MHz transients, which decay from a peak electromagnetic field of E0 7 kV/m and H0 15 A/m. The occurrence of these electromagnetic pulses is associated with generation of hard x-rays with photon energies extending beyond 1 MeV. This contribution reports the first observation of this effect at the PALS facility.