Spectroscopic parameters of the low-lying electronic states and laser cooling feasibility of NH+ cation and NH− anion

The rovibrational levels and spectroscopic parameters of the ground and low-lying excited states of NH+ cation and NH− anion are obtained by ab initio calculations and the laser cooling schemes have been constructed with the 12Σ+ ↔ 12Π transitions of NH+ cation and NH− anion. The predicted cooling temperatures of NH+ cation and NH− anion are 6.63 μK and 4.77 μK, respectively.280