Skip to main content Accessibility help
×
Home
Hostname: page-component-768ffcd9cc-8zwnf Total loading time: 0.259 Render date: 2022-12-05T20:38:17.690Z Has data issue: true Feature Flags: { "useRatesEcommerce": false } hasContentIssue true

Effective collision strengths for electron-impact excitation of Al10+

Published online by Cambridge University Press:  08 June 2006

V. STANCALIE
Affiliation:
National Institute of Laser Plasma and Radiation Physics, Association EURATOM/MEdC, Bucharest, Romania
V. PAIS
Affiliation:
National Institute of Laser Plasma and Radiation Physics, Association EURATOM/MEdC, Bucharest, Romania Politehnica—University Bucharest, Automatic Control and Computers Faculty, Bucharest, Romania

Abstract

Electron collision strengths for electron-impact excitation of Li-like and Al ion are evaluated in close-coupling approximation using the multi-channel R-matrix method. Five LS target eigenstates are included in the expansion of the total wave function, consisting of the two n = 2 states with configurations of 1s22s, 1s22p, and three n = 3 states with configurations 1s23s, 1s23p, and 1s23d. Collision strengths are obtained in LS coupling using FARM code and in intermediate coupling scheme using the SUPERSTRUCTURE program. The effective collision strengths are calculated as function of temperature, up to a temperature that does not exceed half of the maximum energy in the R-matrix run.

Type
Research Article
Copyright
© 2006 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bhada, K. & Henry, R.J.W. (1982). Effect of resonances on 2s-2p and 2l-3l′ excitation of Li-like ions by electron impact. Phys. Rev. A 26, 18481851.Google Scholar
Blume, M. & Watson, R.E. (1962). Spin-spin interaction in paramagnetic-resonance spectra. Proc. Roy. Soc. A 270, 127143.Google Scholar
Burgess, A., Chidichimo, M.C. & Tully, J.A. (1998). Forbidden transitions in Li-like ions: Compact effective collision strength for 2s-ns, nd where n = 3, 4, 5. Astron. Astrophys. Suppl. Ser. 131, 145152.Google Scholar
Burke, V.M. & Noble, C.J. (1995). FARM—A flexible asymptotic R-matrix package. Comp. Phys. Commun. 85, 471500.Google Scholar
Burke, P.G. & Robb, W.D. (1975). The R-matrix theory of atomic processes. Adv. At. Mol. Phys. 11, 143214.Google Scholar
Burke, P.G. & Berrington, K.A. (1993). Atomic and Molecular Processes: An R-matrix Approach. Bristol, UK: IOP Publishing.
Condon, E.H. & Shortley, G.H. (1951). The Theory of Atomic Spectra. London, UK: Cambridge University Press.
Eissner, W., Jones, M. & Nussbaumer, H. (1974). Techniques for the calculation of atomic structure and radiative data including relativistic corrections. Comp. Phys. Commun. 8, 270306.Google Scholar
Gailitis, M. (1976). New forms of asymptotic expansions for wavefunctions of charged-particle scattering. J. Phys. B: At. Mol. Phys. 9, 843854.Google Scholar
Hibbert, A. (1975). CIV3—A general program to calculate configuration interaction wavefunctions and electric-dipole oscillator strengths. Comp. Phys. Commun. 9, 141172.Google Scholar
Klisnick, A.,Sureau,A., Guennou, H.,Möller, C., &Virmont, J. (1990). Effective rates for Li-like ions: Calculated XUV gains in Al10+. Appl. Phys. B 50, 153164.Google Scholar
Noble, C.J. & Nesbet, R.K. (1984). CFASYM, a program for the calculation of the asymptotic solutions of the coupled equations of electron-collision theory. Comp. Phys. Commun. 33, 399411.Google Scholar
Quigley, L. & Berrington, K.A. (1996). The QB method: Analyzing resonances using R-matrix theory. Application to C+, He and Li. J. Phys. B: At. Mol. Opt. Phys. 29, 45294542.Google Scholar
Politov, V. Yu., Potapov, A.V. & Antonova, L.V. (2000). About diagnostics of Z-pinches hot points. Laser Part. Beams 18, 291296.Google Scholar
Pretzler, G., Schlegel, T.H. & Fill, E. (2001). Characterization of electron beam propagation through foils by innershell X-ray spectroscopy. Laser Part. Beams 19, 9197.Google Scholar
Rosch, R, Friart, D., Darrigol, M., Chatrieux, L., Zehnter, P., Romary, P. & Chevallier, J.M. (2000). The implosion dynamics and emission characteristics of Al liner-on-wire implosion. Laser Part. Beams 18, 307313.Google Scholar
Sampson, D.H., Clark, R.E.H. & Parks, A.D. (1979). Intermediate coupling collision strengths for inner-shell excitation of highly charged Li-like ions. J. Phys. B: At. Mol. Phys. 12, 32573272.Google Scholar
Stancalie, V., Burke, V.M., Sureau, A. (1999). Forbidden transitions in excitation by electron impact in Al Li-like ion. Phys. Scripta 59, 5254.Google Scholar
Stancalie, V. (2000). Fine-structure atomic data calculation for Al XI. Phys. Sripta 61, 459463.Google Scholar
Stancalie, V. (2005a). 1s22pns (1P0) autoionizing levels in Be-like Al and C ions. Phys. Plasmas 12, 043301.Google Scholar
Stancalie, V. (2005b). Complements to non-perturbative treatment of radiative damping effect in dielectronic recombination: Δn = 2 transition in C IV. Phys. Plasmas 12, 100705.Google Scholar
Tully, J.A., Seaton, M.J. & Berrington, K.A. (1990). Atomic data for opacity calculations. XIV. The beryllium sequence. J. Phys. B: At. Mol. Opt. Phys. 23, 38113837.Google Scholar
Yamaguchi, N., Fujikawa, C., Kazunobu, O. & Hara, T. (2002). Production of highly ionized plasma by micro-dot array irradiation and its application to compact X-ray lasers. Laser Part. Beams 20, 7377.Google Scholar
Zhang, H.L., Sampson, D.H. & Fontes, C.J. (1990). Relativistic distorted-wave collision strengths and oscillator strengths for the 85 Li-like ions with 8 → Z → 92 Atom. Data. Nucl. Data Tab. 44, 3177.Google Scholar

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Effective collision strengths for electron-impact excitation of Al10+
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Effective collision strengths for electron-impact excitation of Al10+
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Effective collision strengths for electron-impact excitation of Al10+
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *