Atomic Nuclear Charge Dependence of Dielectronic Recombination to Be-like Ions

The atomic nuclear charge (Z) dependence of the dielectronic recombination (DR) rate coefficient (α) to the O4+, Ne6+, Mg8+, P11+, Ar14+, Ca16+, V19+, Fe22+ ions as well as the auger energy (ΔE), the radiative transition probability (Ar), and the autoionization rate (Aa) for the Be-like ions is studied both in quality and quantity. For the calculation of the energy levels, Ar and Aa values, Cowan's code is employed. As for the doubly excited states, 1s23lnl' (l = s, p, d) are considered as well as 1s22pnl states. In the DR processes, at low Z, only the 1s22pnl → 1s22snl and 1s23pnl → 1s22snl processes give a significant contribution. While, at high Z, the 1s23s(or d)nl → 1s22pnl and 1s22pnl → 1s22pn'l' processes also become important. The dielectronic recombination rate coefficient to the final excited 1s22snl show weak Z-dependence, on the other hand, those to the final excited 1s22pnl states have a strong Z-dependence.

[1]  K. Moribayashi,et al.  Dielectronic recombination to the excited states of Be-like Fe ions , 1997 .

[2]  I. Murakami,et al.  UV and x-ray spectral lines of Fe XXIII ion for plasma diagnostics , 1996, atom-ph/9605004.

[3]  U. Safronova,et al.  Rydberg series in Be-like ions (1s22lnl',n=5-12) , 1995 .

[4]  L. Vainshtein,et al.  Dielectronic satellite spectra of the 1s3p-1s2 lines for highly-charged ions with Z = 6-54 (1s2l3l'-1s2 2l transitions) , 1995 .

[5]  Zhi‐zhan Xu,et al.  Unified formulas of dielectronic recombination rate coefficients for the Li-like isoelectronic sequence , 1994 .

[6]  Chen.  Relativistic intermediate-coupling calculations of dielectronic-recombination coefficients for the Li isoelectronic sequence. , 1991, Physical review. A, Atomic, molecular, and optical physics.

[7]  N. Badnell.  On the dielectronic recombination of Li-like Al , 1990 .

[8]  C. J. Romanik.  The Dielectronic Recombination Rate Coefficients for Ions in the He, Li, Be, and NE Isoelectronic Sequences , 1988 .

[9]  Griffin,et al.  Dielectronic recombination of highly ionized iron. , 1987, Physical review. A, General physics.

[10]  Roszman.  Dielectronic-recombination rates for some ions of the lithium isoelectronic sequence. , 1987, Physical review. A, General physics.

[11]  M. Chen.  Relativistic Auger and x-ray emission rates of the 1s2l/sup n/(2l')/sup m/ configurations of Be-like ions , 1985 .

[12]  Griffin,et al.  Distorted-wave calculations of dielectronic recombination cross sections in the Li isoelectronic sequence. , 1985, Physical review. A, General physics.

[13]  Y. Hahn,et al.  Dielectronic-recombination rate coefficients for the lithium isoelectronic sequence , 1984 .

[14]  R. D. Cowan,et al.  The Theory of Atomic Structure and Spectra , 1981 .

[15]  T. Fujimoto.  A collisional-radiative model for helium and its application to a discharge plasma , 1979 .

[16]  R. D. Cowan,et al.  Theoretical Calculation of Atomic Spectra Using Digital Computers , 1968 .

[17]  A. Burgess.  A General Formula for the Estimation of Dielectronic Recombination Co-Efficients in Low-Density Plasmas. , 1965 .

[18]  A. Burgess.  Delectronic Recombination and the Temperature of the Solar Corona. , 1964 .

[19]  Y. Hahn.  Theory of Dielectronic Recombination , 1985 .

[20]  P. Storey,et al.  CHAPTER 6 – Di-electronic recombination , 1976 .