▎ 摘　　要

NOVELTY - Target comprises a carbon nano-tube layer provided with a vertical carbon nano-tube array. The carbon nano-film layer is set on a surface of the carbon nano-tube layer. The carbon nano-film layer is provided with at least one graphene layer, a diamond layer and a diamond-layer. USE - Carbon solid target for generating soft X-ray by laser plasma acceleration mechanism (claimed). ADVANTAGE - The carbon solid target and ultra-short super strong laser effect to generate soft X ray energy conversion efficiency is high, the soft X-ray generated by high brightness, pulse width is short and the coherence is good, so as to promote the application of soft x ray in water window imaging and carbon window imaging. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for method for generating soft X-ray by laser plasma acceleration mechanism.