High Boron And Other Electronic Serial Class Structure And Excited States Of The Research Process Decays

In this paper, the Rayleigh-Ritz variational method with multicofiguration interactionwavefunction is used to calculate the wavefuctions, energy levels, fine structure spilttingsand hyperfine structures of the highly excited states1s²2s2pnl and1s²2p²nl⁴P^e,o（m）（n>2; m=1-5） and the core-exited sextet states1s2s2pnln′l′and1s2p³nl⁶L^e,o（m）（L=S, P;m=15） for the boron isoelectronic sequence （Z=6-14） for the first time. The saddle-pointvariational method and the saddle-point complex-rotation method is carried out on thecore-excited states1s2s²2p²，1s2p⁴，1s2s(^1,3S)2p^32,4L （L=S, P, D） of the boron isoelectronicsequence （Z=6-14） for the first time. The energy levels, wavefuctions, radiative transitionand Auger transition processes of these core-excited resonances are explored. A restrictedvariational method is used to extrapolate better nonrelativistic energies. Furthermore, therelativistic corrections and the mass polarization are included with first-order perturbationtheory. Configuration structures of the high-root excited state series are identified byenergies, contribution to normalization of Angular-spin components, relativistic corrections.The configuration structures of these excited states are further checked by fine structuresplittings. Good agreement is obtained between the calculated transition wavelengths andexperiment values when the QED effects and higher-order relativistic corrections areincluded. Meanwhile, the oscillator strengths, radiative transition rates, and radiativelifetimes are also obtained. Three alternative forms of the oscillator strengths and radiativetransition rates agree well with each other which indicate that the wavefunctions obtained inthis work are enough accurate. The Auger electron energies, Auger rates and Augerbranching ratios of these core-excited states are calculated by the saddle-pointcomplex-rotation method. Considering the closed-channel and the open-channel couplinginteractions, the energy shifts are obtained for the total energy of the core-exiteddoublet and quartet resonances. Calculated total energies for these core-excited states agreewell with available theoretical and experimental results. The relative Auger branching ratiosof the main decay channels for these resonances are discussed according to the quantummechanics theory. Calculated Auger channel energies and branching ratios are used toidentify high-resolution Auger spectrum lines of B-like ions in the collision experiment.Some lines are identified for the first time. Finally, competitive behaviors of the totalradiative rates and total Auger rates of these core-exicited resonances are reported anddiscussed along with the increase of atomic number Z. So far, there are a few theoretical data for the high-lying multi-excited and core-excited states of the boron isoelectronicsequence. Our calculated results will provide valuable theoretical reference for the futureexperiments.