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In this work,ionization potentials and quantum effects of 1s~2 np ~2P Rydberg states of lithium are calculatedbased on the calibrated quantum defect function.Energy levels and quantum defects for 1s~2np~2P bound states andtheir adjacent continuum states are calculated with the R-matrix theory,and then the quantum defect function of the1s~2np (n7) channel is obtained,which varies smoothly with the energy based on the quantum defect theory.Theaccurate quantum defect of the 1s~2 7p~2P state derived from the experimental data is used to calibrate the originalquantum defect function.The new function is used to calculate ionization potentials and quantum effects of 1s~2np ~2P(n 7) Rydberg states.Present calculations are in agreement with recent experimental data in whole.
In this work, ionization potentials and quantum effects of 1s ~ 2 np ~ 2P Rydberg states of lithium are calculated based on the calibrated quantum defect function. Energy levels and quantum defects for 1s ~ 2np ~ 2P bound states andtheir adjacent successive states are calculated with the R-matrix theory, and then the quantum defect function of the 1s ~ 2np (n7) channel is obtained, which varies smoothly with the energy based on the quantum defect theory. experimental data is used to calibrate the originalquantum defectfunction.The new function is used to calculate ionization potentials and quantum effects of 1s ~ 2np ~ 2p (n7) Rydberg states. Present calculations are in agreement with recent experimental data in whole.