The excitation spectra of the Ba 6p_(3/2)ns(J=1)autoionizing states with n ranging from 8 to 12 are measured using multistep laser excitation scheme.The measurements manifest that these states are strongly perturbed b...The excitation spectra of the Ba 6p_(3/2)ns(J=1)autoionizing states with n ranging from 8 to 12 are measured using multistep laser excitation scheme.The measurements manifest that these states are strongly perturbed by the degenerate 6p_(1/2)nl states,as the resonance profiles are structured according to the corresponding perturbing states.The experimental data are well reproduced by multichannel-quantum-defect theory,with the parameters obtained from a previous R-matrix calculation.展开更多
基金The National Natural Science Foundation of China under Grant No.19774048the National High-tech ICF Committee of China,the Zhejiang Nataral Science Foundetion under Grant No.197024the Cao Guang Biao Science Foundation。
文摘The excitation spectra of the Ba 6p_(3/2)ns(J=1)autoionizing states with n ranging from 8 to 12 are measured using multistep laser excitation scheme.The measurements manifest that these states are strongly perturbed by the degenerate 6p_(1/2)nl states,as the resonance profiles are structured according to the corresponding perturbing states.The experimental data are well reproduced by multichannel-quantum-defect theory,with the parameters obtained from a previous R-matrix calculation.
