Studies on the Rotational States of Adsorbed Diatomic Molecules under the External Electric Fields
|關鍵字:||吸附;轉動;矩陣;轉折;能階;禁制;adsorbe;rotation;matrix;turning point;energy level;hinder|
This thesis is devoted to the studies on the rotational states of adsorbed diatomic molecules under the external electric fields. By using the matrix method, the rotational state energies of the hindered rotor were obtained. Our results show that the rotational states of adsorbed diatomic molecules have large energy shifts as well as the free dipole molecules in the very large external electric field. When the field strength is smaller compared with the hindering potential, the Stark effect is suppressed by the conical well and is not prominent. We have also found that the energy levels possess abrupt turning points. The pit and concave places between adjacent levels are very close but do not cross to each other. We convert the hindering potential into the one-dimensional periodic potential and successfully explain the circumstances that the energy levels vary with the electric strengths. For the energy turning points, a simple model is employed to each other to explain this phenomenon. The angular distributions of the wave functions also manifest that adjacent levels are so close at the turning places. Besides, from the Hellmann-Feynman theorem, it is clearly able to point out how many turning places are there for the same level. A complete description about the rotational states of adsorbed diatomic molecules under the external electric fields is presented in the thesis.
|Appears in Collections:||Thesis|