Abstract
The energies and geometry of the Mg-He and Ca-He triatomic complexes are studied using the hyperspherical coupled-channel method. With pairwise He- (where denotes Mg or Ca) potentials, we find that the Mg-He and Mg-He-He systems possess two bound states and the Mg-He system possesses one, while the Ca-He, Ca-He, and Ca-He-He systems are found to support four, three, and three bound states, respectively. The different energies and geometric behaviors are reported when the He atom changes from He to He for the He-He-Mg (Ca) isotopic combinations. We also study structures of excited states and find that for some excited states, they are quite different from the ground states.
- Received 29 May 2013
DOI:https://doi.org/10.1103/PhysRevA.88.042503
©2013 American Physical Society