C. J. B. Pagan,1
J. G. Reyna Almandos,2
Mario Gallardo,2
S.-G. Pettersson,3
G. H. Cavalcanti,4
and A. G. Trigueiros4
1Faculdade de Engenharia Elétrica, Departamento de Máquinas, Componentes e Sistemas Inteligentes, Universidade Estadual de Campinas, 13083-970 Campinas, São Paulo, Brazil
2Centro de Investigaciones Opticas, Casilla de Correo 124, 1900 La Plata, Argentina
3Department of Physics, Lund Institute of Technology, Box 118, S-22100 Lund, Sweden
4Instituto de Física “Gleb Wataghin,” Universidade de Estadual de Campinas, 13083-970 Campinas, São Paulo, Brazil
C. J. B. Pagan, J. G. Reyna Almandos, Mario Gallardo, S.-G. Pettersson, G. H. Cavalcanti, and A. G. Trigueiros, "Study of the 4s4p4d and the 4s4p5s configurations of Kr VI," J. Opt. Soc. Am. B 12, 203-211 (1995)
The spectrum of Kr vi was recorded in the 23–254-nm-wavelength range, resulting in 109 new line classifications. From these data we were able to identify 22 new energy levels belonging to the 4s4p4d and the 4s4p5s configurations. The levels belonging to the 4s25p and the 4s24f configurations and the levels 4s4p2 2S1/2 and 4p3 2P1/2 have new energy values proposed. The results are supported by isoelectronic extrapolation and multiconfiguration Hartree–Fock calculations with relativistic corrections. The experimental data were obtained from a capillary-discharge tube and theta-pinch light sources.
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The abbreviations in this column are defined as follows. Bl: This line was blended for the spectral line indicated. S: The line observed was superposed upon a neighboring line. W: This line appeared wider than the others in our experiment. UA: The line profile is asymmetric. The maximum intensity appears in the longer-wavelength region. LA: The same as for UA, but the maximum intensity appears in the shorter-wavelength region. D: In our plate the line contour does not appear clear, which increases the error in the measurement.
Intensity from capillary discharge.
Double classification.
Observed in the second order.
Observed before by Schönheit2 without transition classification.
The eigenvector composition was obtained from least-squares calculation, where the average LS purity was 78%. Percentages lower than 4% were omitted. The difference between fitted and observed energy levels is shown in the third column. x denotes the 4s4p4d configuration, whereas y denotes 4s4p5s.
Revised levels.
Levels classified for the first time to our knowledge.
Level classified for the first time to our knowledge with only one line.
This table shows the parameters used in the least-squares calculation for odd-parity configurations. The HF parameters with relativistic corrections are compared with the fitted values. The standard deviations (SD’s) for the parameter and the ratio between the fitted and the HF values are also shown. The 4s26p, 4s4d4f, 4p24f, and 4p4d2 configurations were also included in the adjustment calculation with scaled HF parameters (see text). The SD for energy adjustment was 162 cm−1.
Sets of parameters with the same superscripts (either b or d) in the last column indicate that these parameters were linked during the least-squares calculation.
Configuration interaction.
See note b above.
The same as in Table 4, but for even-parity configurations. The SD is 62 cm−1 for the least-squares adjustment.
Sets of parameters with the superscript (b) in the last column indicate that these parameters were linked together during the least-squares calculation.
The abbreviations in this column are defined as follows. Bl: This line was blended for the spectral line indicated. S: The line observed was superposed upon a neighboring line. W: This line appeared wider than the others in our experiment. UA: The line profile is asymmetric. The maximum intensity appears in the longer-wavelength region. LA: The same as for UA, but the maximum intensity appears in the shorter-wavelength region. D: In our plate the line contour does not appear clear, which increases the error in the measurement.
Intensity from capillary discharge.
Double classification.
Observed in the second order.
Observed before by Schönheit2 without transition classification.
The eigenvector composition was obtained from least-squares calculation, where the average LS purity was 78%. Percentages lower than 4% were omitted. The difference between fitted and observed energy levels is shown in the third column. x denotes the 4s4p4d configuration, whereas y denotes 4s4p5s.
Revised levels.
Levels classified for the first time to our knowledge.
Level classified for the first time to our knowledge with only one line.
This table shows the parameters used in the least-squares calculation for odd-parity configurations. The HF parameters with relativistic corrections are compared with the fitted values. The standard deviations (SD’s) for the parameter and the ratio between the fitted and the HF values are also shown. The 4s26p, 4s4d4f, 4p24f, and 4p4d2 configurations were also included in the adjustment calculation with scaled HF parameters (see text). The SD for energy adjustment was 162 cm−1.
Sets of parameters with the same superscripts (either b or d) in the last column indicate that these parameters were linked during the least-squares calculation.
Configuration interaction.
See note b above.
The same as in Table 4, but for even-parity configurations. The SD is 62 cm−1 for the least-squares adjustment.
Sets of parameters with the superscript (b) in the last column indicate that these parameters were linked together during the least-squares calculation.
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