For studying transport of hot electrons in solid targets by transition radiation(TR),the image pattern of spatial distribution and spectrum of optical emission were measured at the normal direction from the rear side of targets employing optical charge coupled device(CCD) camera and optical multi-channel spectrometer apparatus(OMA) on the 100 TW femtosecond laser facility.

In order to im-prove its beam diagnostic system transition radiation has been used instead of the original phosphor target.

The spatial pattern and spectrum of transition radiation have been measured at the normal direction from the rear surfaces of targets,employing an optical CCD camera and an OMA optical multi-channel spectrometer on the 100 TW femtosecond laser facility.

Study of the harmonics of coherent transition radiation emitted by hot electrons generated in ultra-intense laser plasma interaction due to different heating mechanism;

Observation of the rear_side coherent transition radiation generated by hot electrons;

The sharp peaks are ascribed to the coherent transition radiation (CTR) .

Study on Application of Optical Transition Radiation Method on the Linear Induction Accelerators;

The integrated image taken by CCD camera shows that the optical emission forms a ring, on the edge of the ring there is a bright localized signal, which is the optical transition radiation (OTR).

Novel low-impedance transit-time radiation oscillator;