supported by the China Acdamy of Engineering Physics Project (No. 2006Z0202);the StateKey Program of the National Natural Science of China(No. 10535030);the National Natural Science Foundation of China (No. 10975121)
An electron beam is obtained using laser wakefield electron accelerator, and converted into a γ-ray source after undergoing bremsstrahlung radiation in a dense material. A quasi-monoenergetic structure is observed wh...