1911215, Xiao Lun was born in a scholarly family in Pixian county, Sichuan province. His father is a former scholar, and his mother knows books and ceremonies. Xiao Lun grew up in a well-educated family. Xiao Lun was smart and diligent since he was a child, and he loved reading. When he was a child, he could write poems correctly.

1923, Xiao Lun was admitted to Chengdu Dacheng Middle School from a private school. 1926 graduated from middle school, and was admitted to the preparatory course of science of Chengdu university with excellent results. 1933 was admitted to the chemistry department of Tsinghua University, and dropped out of school due to illness. He graduated from the Chemistry Department of Tsinghua University on 1939. In the same year, he was admitted to the Biology Department of Peking University. A year later, I gave up graduate school and went back to Sichuan to raise money to run an alcohol factory.

1947-195/kloc-0 studied in the chemistry department of the university of Illinois, USA. 1948 received the master's degree, and 195 1 year received the doctor's degree. During his study, he majored in physical chemistry and minored in nuclear physics. Xiao Lun's doctoral thesis is entitled "New radioactivity induced by gamma rays". Neutrons or protons were extracted from W (tungsten) by gamma rays, and three new isotopes, 185mW, 183Ta and 185Ta, were found. After more than 40 years of inspection, his determination of atomic order, mass number, radiation type and energy is correct.

195 1- 1952, associate researcher, health (safety) physicist, Department of Physics, University of Illinois.

From 65438 to 0952, Xiao Lun was transferred to the State Bureau of Mining (now called Petroleum Energy Research Institute) to engage in physical and chemical research. When the surfactant for secondary oil recovery was studied by radioactive tracer method, it was found that the micelle of polyoxyethylene nonionic surfactant was positively charged in aqueous solution. Xiao Lun didn't have the opportunity to work in this field after returning to China, but he has been concerned about using surfactants to solve the problem of secondary oil recovery.

1953- 1955, physical chemist, US Bureau of Mines.

1956- 1958, researcher, Institute of Physics, Chinese Academy of Sciences, deputy director of Isotope Research Office.

1956 The first lecture on radiochemistry was held in Peking University. He has made important contributions to national defense and guided the development of special military radioactive sources and tritium, the raw material of hydrogen bombs. He has been engaged in the research, development, production and application of radioisotopes for a long time, such as Antarctic ice composition analysis, trace elements and human health, traditional Chinese medicine composition analysis, labeled receptor imaging agent and so on.

1956- 1957. Professor Peking University.

1958- 1983, researcher, director of Isotope Research Office, director of Isotope Research Department of Atomic Energy Research Institute under the dual leadership of China Academy of Sciences and Ministry of Nuclear Industry (formerly Jill Department).

1960, he led Gu Hua to systematically study radioactive growth, and found that the semi-logarithmic decay curve of newly purified radioactive material is straight, which does not necessarily mean that the material has reached radiochemical purity. If the mother's half-life is 50% of her daughter's half-life, then the semi-logarithmic decay curve of total radioactivity is still straight; And the curve of (matrix decay constant λ 1) >: (daughter decay constant λ2) is concave to the time axis, but they point out that among the three cases of unbalanced total radioactivity, only λ 1 >: 2λ2 can be concave in one case. Later, Academician Liu Boli's research supported and developed their views.

In addition, Xiao Lun and his colleagues also conducted activation analysis of nourishing and non-nourishing Chinese herbal medicines and trace elements in human nails. They use the method of nonlinear mapping to distinguish whether the samples belong to tonic or non-tonic; They also used the method of neural network to distinguish patients with esophageal cancer from normal people through the analysis of human nails.

1962, Xiao Lun was ordered to command two top secret missions. One is to develop a special radioactive source for the ignition of the atomic bomb code 503 and the determination of the critical mass of the atomic bomb. This source is extremely toxic, and there have been casualties in the Soviet Union. The other is the research on tritium preparation technology code-named 502.

1980 was elected as an academician of China Academy of Sciences.

1996, chairman of the first international isotope congress.

1997 was elected as an academician of New York Academy of Sciences.

He died on June 5438+065438+1October 65438+May 2000.