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Abstract: The high spin states of 35Cl have been studied by in-beam γ-spectroscopy following the fusion–evaporation reaction 12C(28 )35Cl at and 88 MeV, using the Indian National Gamma (Clover) Array (INGA). Lifetimes of six new excited states have been estimated for the first time. To understand the underlying structure of the levels and transition mechanisms, experimental results have been compared with those from the large basis cross-shell shell model calculations. Involvement of orbitals from fp shell and squeezing of the sd–fp shell gap seem to be essential for reliable reproduction of high spin states. [Copyright &y& Elsevier]

Abstract: The lepton and lepton flavor violating process of the muon-to-positron conversion in 27Al is studied with emphasis on mechanisms mediated by heavy neutrinos. We investigate two such cases: (i) the mode which involves only nucleons in the nucleus (nuclear mode) and (ii) the mode mediated by pions (1-pion and 2-pions in flight between the interacting nucleons). The nuclear wave functions for the initial state of 27Al and all accessible final states of 27Na are obtained in the framework of 1s–0d shell model employing the well-known Wildenthal realistic interaction. The total strength is calculated by summing over all excited states up to the energy . We found that the contributions from the 1-pion and nuclear mode are about eight times smaller than the 2-pion mode. [Copyright &y& Elsevier]