Two kinds of high efficient Agl pyrotechnics BR-88-5 and BR-91-Y have been developed.The tests in the cloud chamber show that the AgI ice nucleating effectiveness can reach up to 10^(15)/g,and the BR-91-Y has even hig...Two kinds of high efficient Agl pyrotechnics BR-88-5 and BR-91-Y have been developed.The tests in the cloud chamber show that the AgI ice nucleating effectiveness can reach up to 10^(15)/g,and the BR-91-Y has even higher ice nucleating rate.Two kinds of foreign AgI pyrotechnics have been made according to the given formulations and also tested in the cloud chamber for comparison.X-ray diffraction analysis for the aerosols produced by burning BR-91-Y shows that AgI in acrosols still retains the hexagonal crystal form and the lattice parameters are smaller than those of pure AgI and other AgI composite nuclei,and closer to ice.Combining with the other tests,the reasons for the high effi- ciency of BR-91-Y have been discussed.展开更多
A 2m^3 isothermal cloud chamber mainly for ice nucleation research is described in this paper.Its structure, attached instruments and experimental procedures are also presented.The experiments of determining the ice n...A 2m^3 isothermal cloud chamber mainly for ice nucleation research is described in this paper.Its structure, attached instruments and experimental procedures are also presented.The experiments of determining the ice nuclei effectiveness for the Agl-containing aerosols produced by three formulations have been conducted and the results have been compared with those of the CSU 960-liter isothermal cloud chamber.All experimental results show that the chamber has advantages of stable performance and reproducibility.It would be expected to become a useful experimental facility for ice nucleation research.展开更多
基金This study is supported by the fund for scientists return from foreign countriesthe fund of cloud physics of SMA.
文摘Two kinds of high efficient Agl pyrotechnics BR-88-5 and BR-91-Y have been developed.The tests in the cloud chamber show that the AgI ice nucleating effectiveness can reach up to 10^(15)/g,and the BR-91-Y has even higher ice nucleating rate.Two kinds of foreign AgI pyrotechnics have been made according to the given formulations and also tested in the cloud chamber for comparison.X-ray diffraction analysis for the aerosols produced by burning BR-91-Y shows that AgI in acrosols still retains the hexagonal crystal form and the lattice parameters are smaller than those of pure AgI and other AgI composite nuclei,and closer to ice.Combining with the other tests,the reasons for the high effi- ciency of BR-91-Y have been discussed.
文摘A 2m^3 isothermal cloud chamber mainly for ice nucleation research is described in this paper.Its structure, attached instruments and experimental procedures are also presented.The experiments of determining the ice nuclei effectiveness for the Agl-containing aerosols produced by three formulations have been conducted and the results have been compared with those of the CSU 960-liter isothermal cloud chamber.All experimental results show that the chamber has advantages of stable performance and reproducibility.It would be expected to become a useful experimental facility for ice nucleation research.
