[en] The generation of high energy electrons by high intense laser was examined. The laser pulses with 2 TW, 100 fs were used for generating plasma. They were focused in nitrogen gas, which generated thin plasma and electron jets transversely. We measured the radiation of the jets with imaging plates and emulsion track detectors. It was confirmed the radiation is transversely symmetrical x-ray and the mean energy of the x-ray is around 5 keV. The x-rays may be generated by bremsstrahlung of electrons of jets. The measurement of the radiation of the jets with imaging plate and emulsion track detector is discussed. (author)