Experimental Observation of Radiation from Ultrahigh Intense Laser Pulse Interaction with Low Magnetized Plasma

Homaira ParchamyAraghy, Noboru Yugami, Masanori Aoyagi,Davoud Dorranian, Hiroaki Ito, and Yasushi Nishida

Department of Energy Enviromental Science,
Graduate School of Engineering, Utsunomiya University,
7-1-2, Yoto, Utsunomiya, Tochigi,321-8585, Japan,
Tel:+81 28 689 6083, Fax: +81 28 689 7030

From interaction between a ultra short and high intensity laser pulse with gas filled tube in weakly magnetized plasma, the radiation in the range of the microwave frequency have been observed. the pulse duration of the radiation is about 200 ps and its frequency is about 50 GHz.The frequency of the radiation is measured by the time of flight method. this radiation is explained by the electron motion under the electric field created by the ion column along the dc magnetic field.