Project supported by the National Natural Science Foundation of China (Grant No 10474089).
The valence-shell excitations of krypton atom have been investigated by fast electron impact with an angle-resolved electron-energy-loss spectrometer. The generalized oscillator strengths for some higher mixed valence...
Supported by the National Natural Science Foundation of China under Grant No.49804010.
The transport of solar flare particles in the corona is studied.Considering the problems in terms of the characteristics of a sunspot group producing solar cosmic rays and solar flare processes,we find that formation ...