Study of virtual states in 5He and 10Li with the Jost function method Original Research Article

We study virtual states in 5He and 10Li by using the Jost function method (JFM). In 5He, we obtained an s-wave pole with the complex energy E=7.50−44.7i MeV using a 4He–n potential called KKNN. In 10Li, we investigated s-wave virtual poles with the 9Li–n interaction microscopically constructed by taking into account the Pauli-blocking effect. We obtained a virtual state at E=−0.135 MeV (k=−0.077i fm−1). The attractive property of the s-wave 9Li–n potential for 10Li is discussed in comparison with the 5He (4He+n) system and also calculational results for the 9Li–n potential of Thompson and Zhukov.