The Atoms And Diatomic Molecules Of Hf, Hcl, Hbr Collision Of Quantum Mechanics

In this paper, as a beginning, a theoretical calculation method (close-coupling approximation method) has been detailed introduced, and then advantages and disadvantages of every kind of potential models have been discussed, and potential model (MS model) adapted by Sun Guihua has been stated. This work gives amsotropy surfaces of three collision systems He-HF, He-HCl, He-HBr. Comparing theoretical results with experimental ones has carried out the discussion on feasibility of adapted potential model. All differential cross sections (DCS), partial wave cross sections (PCS) and total scattering cross sections (TCS) have been achieved by using close-coupling approximation method to calculate the three systems, and results above have also been discussed and analyzed.Study indicates that adapted MS potential surface is a kind of potential with concision form, coherent expression that can describe exactly the characteristic of system interaction. Non-elastic scattering sections are sensitive to orientation of potential and strength of repulsive potential. The stronger orientation of potential is, the weaker repulsive potential is, and the bigger probability of non-elastic scattering is.The DCS in exciting states is smaller when small angles, and will be bigger when big angles. The higher exciting states are, the bigger probabilities of big angle scatterings are. In the course of scattering with the same energy, the excited probabilities of lower exciting states are far off bigger than ones of higher exciting states.All in all, the adapted MS potential has advantages of concision form, less adjustable parameters, convenient for applicant. According to the MS potential, one can describe exactly the characteristic of interaction in the He-HF, He-HCl and He-HBr systems. Scattering sections reflect some characters of interaction potential in collision systems; therefore one can get information about interaction from the theoretical and experimental research of collision between atoms and molecules. It is especially noted that non-elastic scattering sections and single rotational-excitation sections give abundant information about orientation and repulsive potential of interaction between atom and molecules, which meant an important way as to fully investigating the interaction between atoms and molecules.