1. The classical theory of Superradiance has been Summarized in this article.

2. So the study on superradiance RBWO has much actual value.

3. The superradiance mechanism in RBWO was studied systematically by associated method of particle simulation and experiment in this dissertation.

4. It is found that the frequency creep caused by superradiance usually results in this kind of limit cycle like oscillations.

5. The separation of boron isotopes is studied by tunable TEA CO2 superradiance laser.