Relativistic distorted-wave collision strengths have been calculated for all possib
le le="Click to view the MathML source">Δn=0 transitions, where
le="Click to view the MathML source">n denotes the va
lence shell of the ground
level, in the 67 Li-like, F-like and Na-like ions with
le="Click to view the MathML source">Z in the range
le="Click to view the MathML source">26≤Z≤92. This choice produces 3 transitions with
le="Click to view the MathML source">n=2 in the Li-like and F-like ions, and 10 transitions with
le="Click to view the MathML source">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, e
lectron energies
le="Click to view the MathML source">E′=0.008,0.04,0.10,0.21,0.41, and 0.75, where
le="Click to view the MathML source">E′ is in units of
le="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0092640X16300080&_mathId=si199.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=18d06792edf3e44950ded7dd4b338b56">le="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0092640X16300080-si199.gif"> Ry with
le="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0092640X16300080&_mathId=si200.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=f0be57334e77c9f9054b5f8826ccda56">le="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0092640X16300080-si200.gif"> for Li-like ions and
le="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0092640X16300080&_mathId=si201.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=06eb3401919359a66fbdea78a5ad1d20">le="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0092640X16300080-si201.gif"> for F-like ions. For the Na-like ions, the calculations were made for the six final e
lectron energies
le="Click to view the MathML source">E′=0.0025,0.015,0.04,0.10,0.21, and 0.40, with
le="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0092640X16300080&_mathId=si203.gif&_user=111111111&_pii=S0092640X16300080&_rdoc=1&_issn=0092640X&md5=d46ad71254ba24c00ae2ffcfce676956">le="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0092640X16300080-si203.gif">. 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 Tab
les 44 (1990) 31; H.L. Zhang, D.H. Sampson, C.J. Fontes, At. Data Nucl. Data Tab
les 48 (1991) 25; D.H. Sampson, H.L. Zhang, C.J. Fontes, At. Data Nucl. Data Tab
les 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.