China News Service, Beijing, February 21 (Reporter Sun Zifa) The Institute of Chemistry, Chinese Academy of Sciences, issued an obituary on February 21: Zhu Qihe, a member of the Communist Party of China, an academician of the Chinese Academy of Sciences, a famous Chinese physical chemist, and a researcher at the Institute of Chemistry, Chinese Academy of Sciences, died due to illness. Invalid, died in Beijing on February 20 at the age of 100.

  Academician information on the official website of the Chinese Academy of Sciences shows that Academician Zhu Qihe is mainly engaged in molecular reaction dynamics research. Born in Beijing on July 12, 1924. Graduated from the Chemical Engineering Department of Central University in 1947. In 1951, he received a PhD in chemistry from the University of California, Berkeley. In 1995, he was elected as an academician of the Chinese Academy of Sciences.

  According to the official website of the Institute of Chemistry, Chinese Academy of Sciences, Academician Zhu Qihe taught in the chemistry departments of Yenching University and Peking University after returning to China in the spring of 1951. In the winter of 1952, he was transferred to Harbin Military Engineering Institute and worked as a physics teacher for a long time. He participated in nuclear reactor design and multiple laser application projects. In 1978, he was initially transferred to the Institute of High Energy Physics, Chinese Academy of Sciences, where he was responsible for scientific research projects such as superconducting magnets, superconducting microwave cavities, and laser acceleration. In 1981, he was transferred to the Institute of Chemistry, Chinese Academy of Sciences, and was responsible for establishing the Molecular Reaction Dynamics Laboratory.

  Academician Zhu Qihe has successfully developed 6 large-scale experimental devices using molecular beams and lasers with international standards, and won the first and second prizes of the Chinese Academy of Sciences Science and Technology Progress Award. He has also used these devices to carry out scientific research in various aspects: in molecular light During the decomposition study, the photolysis rules of molecules such as iodinated alkanes, halogenated alkenes and ketones were obtained, and the microscopic reaction mechanism was proposed. In cluster research, a new type of hydrogen-containing carbon clusters was discovered for the first time, and a cylindrical structure was proposed. A series of binary clusters of metals and sulfur were also discovered, and their composition rules, stability, photolysis rules and Kinetics of cluster formation.

  Academician Zhu Qihe uses time-of-flight mass spectrometry and photoelectron spectroscopy to study multi-photon ionization and dissociation dynamics of molecules; uses time-resolved infrared emission spectroscopy to study vibrational energy transfer in free radical reactions and molecular collisions; and also uses the newly built femtosecond laser system , studying the vibrational relaxation of molecules in electronic excited states, etc.

  The obituary stated that in compliance with Academician Zhu Qihe's last wish and the opinions of his family, the body was donated and the funeral was kept simple, without a farewell ceremony. From February 22 to 24, the Institute of Chemistry, Chinese Academy of Sciences, set up a memorial hall for Academician Zhu Qihe at the institute for all walks of life to pay their respects. (over)