1s2s2p2p35

Relativistic energy, fine structure, and hyperfine structure of the high-lying core-excited statesP5(n)(n=Gou1, Wang2 2004Phys. Rev. A9000View full textAdd to dashboardCite

“…Their experimental wavelength and lifetime [5] 132.392± 0.007 nm and 0.65± 0.01 ns are more than five times more accurate than previous experimental results. The theoretical results 131.16 nm and 0.601 ns of Mannervik et al [5] are in good agreement with previous theoretical predictions of Beck and Nicolaides [2], but not very close to the experimental values of themselves. Subsequently, Brage and Fischer [4] extended the MCHF calculation allowing for more correlation and including relativistic effects, thus obtaining a value of 132.31 nm for the transition wavelength in very good agreement with the experimental results.…”

“…Schneider et al [3] presented a Grotrian diagram for the quintet states in C 2+ obtained from calculated energies. Later, the 1s2s2p 2 5 P-1s2p 3 5 S o transition in B + was improved in beam-foil spectroscopy and multiconfiguration Hartree-Fock (MCHF) calculations by Mannervik et al [5]. Their experimental wavelength and lifetime [5] 132.392± 0.007 nm and 0.65± 0.01 ns are more than five times more accurate than previous experimental results.…”

“…Later, the 1s2s2p 2 5 P-1s2p 3 5 S o transition in B + was improved in beam-foil spectroscopy and multiconfiguration Hartree-Fock (MCHF) calculations by Mannervik et al [5]. Their experimental wavelength and lifetime [5] 132.392± 0.007 nm and 0.65± 0.01 ns are more than five times more accurate than previous experimental results. The theoretical results 131.16 nm and 0.601 ns of Mannervik et al [5] are in good agreement with previous theoretical predictions of Beck and Nicolaides [2], but not very close to the experimental values of themselves.…”

“…In the past few decades, the core-excited states of beryllium-like ions have attracted considerable attention to both theoretical [1][2][3][4][5][6][7][8][9][10][11][12] and experimental [13][14][15][16][17][18]. The highlying core-excited quintet state of beryllium-like ions is a complex four-electron atomic system with high orbital, spin, and angular momentum quantum numbers, which can be stable against Coulomb autoionization because of wellknown angular-momentum and parity-selection rules.…”

“…In this paper, variational method with multiconfiguration interaction wave function is carried out on the high-lying core-excited states 5 P͑n͒ ͑n =1-7͒ and 5 S o ͑m͒ ͑m =1-5͒ for the Be-like boron and carbon. The relativistic energies, the fine structure, the hyperfine parameters, and the coupling constants are reported and discussed.…”