Relativistic distorted-wave collision strengths for transitions in the 67 Li-like, F-like and Na-like ions with

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• 作者：Christopher J. Fontes ; ^{cjf@lanl.gov" class="auth_mail" title="E-mail the corresponding author} ; Hong Lin Zhang
• 关键词：Electron-impact excitation collision strengths ; Relativistic distorted-wave theory ; Lithium-like ; fluorine-like ; and sodium-like ions ; Improved top-up method
• 刊名：Atomic Data and Nuclear Data Tables
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：113
• 期：Complete
• 页码：293-315
• 全文大小：509 K

文摘

Relativistic distorted-wave collision strengths have been calculated for all possible 80&_mathId=si189.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=a22aa04445a45e03de0b411acc29d37b" title="Click to view the MathML source">Δn=0$\Delta n=0$ transitions, where 80&_mathId=si192.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=b1f12f013d762dcd6b9019f46bc0bb08" title="Click to view the MathML source">n$n$ denotes the valence shell of the ground level, in the 67 Li-like, F-like and Na-like ions with 80&_mathId=si5.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=236c42fb2a841eed6328a44fa21a0ab6" title="Click to view the MathML source">Z$Z$ in the range 80&_mathId=si190.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=f73bcd0f24bafb1529f5f0527edbe8b5" title="Click to view the MathML source">26≤Z≤92$26\le Z\le 92$. This choice produces 3 transitions with 80&_mathId=si195.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=37efbde8ee4625f36e54565dd906724a" title="Click to view the MathML source">n=2$n=2$ in the Li-like and F-like ions, and 10 transitions with 80&_mathId=si196.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=51ca24b0b7e8aa321e77e9bbba8e1aaa" title="Click to view the MathML source">n=3$n=3$ in the Na-like ions. For the Li-like and F-like ions, the calculations were made for the six final, or scattered, electron energies 80&_mathId=si197.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=4ed586fb7272a34eb2786e054ed508bc" title="Click to view the MathML source">E^′=0.008,0.04,0.10,0.21,0.41$E^{\prime }=0.008,0.04,0.10,0.21,0.41$, and 0.75, where 80&_mathId=si52.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=514d2b1597e42814fa2622b6276c82ca" title="Click to view the MathML source">E^′$E^{\prime }$ is in units of 80&_mathId=si199.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=18d06792edf3e44950ded7dd4b338b56">80-si199.gif">$Z_{\mathrm{eff}}^2$ Ry with 80&_mathId=si200.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=f0be57334e77c9f9054b5f8826ccda56">80-si200.gif">$Z_{\mathrm{eff}}=Z-1.66$ for Li-like ions and 80&_mathId=si201.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=06eb3401919359a66fbdea78a5ad1d20">80-si201.gif">$Z_{\mathrm{eff}}=Z-6.667$ for F-like ions. For the Na-like ions, the calculations were made for the six final electron energies 80&_mathId=si202.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=7c323200088d8988ca94964704dfcda0" title="Click to view the MathML source">E^′=0.0025,0.015,0.04,0.10,0.21$E^{\prime }=0.0025,0.015,0.04,0.10,0.21$, and 0.40, with 80&_mathId=si203.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=d46ad71254ba24c00ae2ffcfce676956">80-si203.gif">$Z_{\mathrm{eff}}=Z-8.34$. In the present calculations, an improved “top-up” method, which employs relativistic plane waves, was used to obtain the high partial-wave contribution for each transition, in contrast to the partial-relativistic Coulomb–Bethe approximation used in previous works by Zhang, Sampson and Fontes [H.L. Zhang, D.H. Sampson, C.J. Fontes, At. Data Nucl. Data Tables 44 (1990) 31; H.L. Zhang, D.H. Sampson, C.J. Fontes, At. Data Nucl. Data Tables 48 (1991) 25; D.H. Sampson, H.L. Zhang, C.J. Fontes, At. Data Nucl. Data Tables 44 (1990) 209]. In those previous works, collision strengths were also provided for Li-, F- and Na-like ions, but for a more comprehensive set of transitions. The collision strengths covered in the present work should be more accurate than the corresponding data given in those previous works and are presented here to replace those earlier results.