Polarizability Of High Rydberg States In Rb

As an extremely useful tool to gain insight in atomic dynamics atoms in highly excited electronic states-Rydberg atoms-are becoming hot sport in some research field. Study of atom-field interactions are very important keys for us to understand atomic structure, spin-dependent interactions, angular momentum coupling schemes in atoms. Meanwhile, the electric dipole polarizability of an atom describes the response of the electron cloud to an external electric field. it plays an important role in those research related to collision processes..For example, accurate atomic polarizability data can be used to test the consistency of the oscillator strength and the wave function outside area behavior and so on. With the advance of laser cooling and trapping techniques Investigation on the radiative lifetime and polarizability of Rydberg atoms has been one of important fieldsIn view of the above reasons, this paper made a exploration on highly excited electronic states-Rydberg alkali metal atoms under the influence of external fields. Most of theoretical calculation on lifetime and polarizability only focus on low-lying atomic states, but we calculate the polarization rate of alkali metal atom with higher quantum number. Our work is based on the new method and achievements which about high excited state atomic radial matrix element calculation. It use a new calculation method, using B-spline technique and a kind of atom potential model, double precision numerical integral, which make the principal quantum number n reach150. We use the above method, calculated the some alkali atoms polarization rate with higher principal quantum number. This paper calculate the polarization rate of Rb atom(n＜147) and compared them with the experimental results.