36 MeV/u~(16)O~(8+)ion beams with different doses were used to implant into endosperms of seeds of cultivars 86336 and 14615,spring wheat(Triticum aestivum L.).The ions with 1×10~7,5×10~7,and 1×10~8 i
Ultra high vacuum of 3.5×10^-3 Pa was designed for HIRFL-CSR vacuum system which is the highest vacuum degree in large vacuum system in China. Thcre arc ma