7 A GeV is measured by using δ-electron density method.

Based on the molecular orbital theories, three kinds of methods are systematically introduced, such as the π charge density method, localization energy method and frontier electron density method, which are used in predicting the reactivity at the ortho, para and meta position of the mono-substituted benzenes.

Study of atomic average covalence electron density in EET;

Calculation of electron density on γ-Fe(111),Co(0001),Ni(111),C(0001) crystal plane and valence electron structure analysis of catalyst action;

Experimental research on electron density in solid-rocket motor plume;

In order to provide a plasma environment of high energy and low density, vertical and parallel microwave input models are designed at the entrance of the plasma source to increase electronic density and temperature.

The numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surfa.

On the base of the ionospheric occultation data from COSMIC system,we analyzed the max electronic density of ionospheric F2 layer(NmF2)over seismic preparation zone from April to the end of May.

The effect of high-energy (E>100eV) δ electrons on the backward electron yield is also considered in detail, and only those δ electr.

The interference effect from δ electrons created by primary particle passing through radiator in Cherenkov Correlated Timing (CCT) technique is discussed, and the possible method to diminish this interference effect is proposed.