Energy levels, transition probability and oscillator strengths have been calculated for the Ar XIII, Ti XVII and Fe XXI. The configurations included in the calculations are 2s2 2p2, 2s2 2p 3l (l = s, p & d) and 4l (l = s, p, d, & f) of C-like Ar XIII, Ti XVII & Fe XXI which has 69 fine structures by using the fully relativistic flexible atomic code (FAC) program. These data are used in the determination of the reduced population and gain coefficients over a wide range of electron densities from (10+18 to 10+23) and at various plasmas temperatures. The results show that the transitions in Ar18+, Ti22+, and Fe26+ ions are the most promising laser emission lines in the XUV and soft X-ray spectral regions.
References
[1]
Vinogradov, A.V., Sobelmen, I.I. and Yukov, E.A. (1975) Possibility of Constructing Afar-Ultraviolet Laser Utilizing Transitions in Multiply Charged Ions in an Inhomogeneous Plasma. Soviet Journal of Quantum Electronics, 5, 59.
http://dx.doi.org/10.1070/QE1975v005n01ABEH010704
[2]
Norton, B.A. and Peacock, N.J. (1975) Population Inversion in Laser-Produced Plasmas by Pumping with Opacity- Broadened Lines. Journal of Physics B, 8, 989-996. http://dx.doi.org/10.1088/0022-3700/8/6/026
[3]
Eliezer, S. and Mima, K. (2009) Applications of Laser-Plasma Interactions. Taylor & Francis,
[4]
Aggarwal, K., Keenan, F. and Msezane, A. (2003) Oscillator Strengths for Transitions in C-Like Ions between KXIV and MnXX. The Astronomy and Astrophysical Journal, 401, 377-383.
[5]
Aggarwal, K., Keenan, F. and Msezane, A. (2001) Oscillator Strengths for Transitions in C-Like Ions between FIV and ArXIII. Journal Supplement, 136, 763-787.
[6]
Aggarwal, K., Hibbert, A., Keenan, F. and Norrington, P. (1997) Oscillator Strengths for Transitions in CaXV and FeXXI. Journal of Astrophysical, 108, 575-590. http://dx.doi.org/10.1086/312967
[7]
Feldman, U., Bhatia, A.K. and Suckewer, S. (1983) Short Wavelength Laser Calculations for Electron Pumping in Ne- Lie Kr (Kr XXVII). Journal of Applied Physics, 45, 2188-2197. http://dx.doi.org/10.1063/1.332371
[8]
Feldman, U., Seely, J.F. and Doschek, G.A. (1986) 3S-3P Laser Gain and X-Ray Line Ratios for the Carbon Isoelectronic Sequence. Journal of Applied Physics, 59, 3953-3957. http://dx.doi.org/10.1063/1.336695
[9]
Feldman, U., Doschek, G.A., Seely, J.F. and Bhatia, A.K. (1985) Short Wavelength Laser Calculation for Electron Pumping in BeI and BI Isoelectronic Sequences (18 ≤ Z ≥ 36). Journal of Applied Physics, 58, 2909.
http://dx.doi.org/10.1063/1.335838
[10]
Feldman, U., Seely, J.F. and Bhatia, A.K. (1984) Scaling of Collisional Pumped 3S-3P Lasers in the Neon Isoelectronic Sequence. Journal of Applied Physics, 56, 2475-2478. http://dx.doi.org/10.1063/1.334308
[11]
Goldstein, W.H., Oreg, J., Zigler, A. and Klapisch, M. (1988) Gain Prediction for Nickel-Like Gadolinum from a 181-Level Multiconfigurational Distorted-Wave Collisional-Radiative Model. Physical Review A, 38, 1797-1804.
[12]
Vinogradov, A.V. and Shleyaptsev, V.N. (1980) Calculation of Population Inversion Due to Transitions in Multiply Charged Neon-Lie Ions in the 200-2000 A Range. Soviet Journal of Quantum Electron, 10, 754.
http://dx.doi.org/10.1070/QE1980v010n06ABEH010287
[13]
Sobel’man, I.I. (1979) Introduction to the Theory of Atomic Spectra, International Series of Monographs in Natural Philosophy. Vol. 40, Pergamon Press, Oxford.
[14]
FAC Code. http://kipac-tree.stanford.edu/fac
[15]
Bhatia, A.K., Seely, J.F. and Feldman, U. (1987) Atomic Data and Spectral Line Intensities for the Carbon Iso Electronic Sequence (ArXIII through KrXXXI). Atomic Data and Nuclear Data Tables, 36, 453-494.
http://dx.doi.org/10.1016/0092-640X(87)90012-X
[16]
Hibbert, A., Ledourneuf, M. and Mohan, M. (1993) Energies, Oscillators Strengths, and Life Times for Neon-Like Ions up to Kr XXVII23-112 ADNDT. Atomic Data and Nuclear Data Tables, 53, 23-112.
[17]
Yuan, G., Kato, Y., Daido, H., Kodama, R. and Murai, K. (1996) Accurate Wavelength Determination of the Lasing and Nonlasing Lines in Laser-Produced Germanium Plasma. Physica Scripta, 53, 197-203.
Feldman, U., Seely, J.F. and Bhatia, A.K. (1985) Density Sensitive X-Ray Line Ratios in the BeI, BI, and NeI Isoelectronic Sequences. Journal of Applied Physics, 58, 3954-3958. http://dx.doi.org/10.1063/1.335569
[20]
Aggarwal, K.M., Hibbert, A., Keenan, F.P. and Norrington, P.H. (1997) Oscillator Strengths for Transitions in CaXV and FeXXI. The Astrophysical Journal Supplement Series, 108, 575è590.
