XU Guangxian, chemist, was born in Shaoxing, Zhejiang Province in November 1920. In 1951, he received his Ph.D. from Columbia University in US. He was elected a
New β-delayed proton precursor ~(142)Ho was produced via heavy ion induced reaction~(106)Cd(~(40)Ca,p3n),and identified for the first time by using a He-jet f