In this research we study the single-particle with particle-rotor model of the
isotopes. The rotational energy of the nucleus related to its
orientation .
This model study the nucleus as a tow parts ; one of them is the core which is
moving in a
collective motion, in addition of the other part of motion which is the single
particle motion outside the core.
The calculation shows that adding the coriolis effect make a better agreement to the
experimental values of the energy than the calculation without the coriolis effect the
research suggestion adding the vibration motion which contributes in the core vibration.
