Abstract
Oxygen ions from a 2 MV tandem accelerator have been used in beam-foil spectroscopic studies of O II, O III and O IV in the wavelength region 2000–5000 Å. Excitation functions for relative level populations in O II, O III and O IV in the incident energy range of 1.2–3.75 MeV have been measured and interpreted in terms of the independent electron model. Mean radiative lifetime measurements for a number of levels including cascades 4631 Å feeding to 2450 Å and 4344 Å feeding to 2385 Å in O IV have resulted in consistent values. Lifetime measurements for some of the O II levels of astrophysical interest have been reinvestigated and significant deviations from earlier values were observed.
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Andrä, H.J.: Progress in atomic spectroscopy, Part B. pp 829 Hanle, W., Kleinpoppen, H. (eds.), New York: Plenum Press 1979
Veje, E.: Phys. Rev. A14, 2077 (1976)
Andersen, B., Jensen, S.B., Ramanujam, P.S., Veje, E.: Phys. Scr.20, 65 (1979)
Baudinet-Robinet, Y., Dumont, P.D.: Phys. Rev. A28, 2169 (1983)
Baudinet-Robinet, Y., Garnir, H.P., Dumont, P.D., Renier, B.: Phys. Rev. A23, 655 (1981)
Striganov, A.R., Sventitskii, N.S.: Tables of spectral lines of neutral and ionised Atoms. pp 146. New York: Plenum Press, 1968
Pettersson, S.-G.: Phys. Scr.26, 296 (1982)
Bromander, J.: Ark. Fys.40, 257 (1969)
Betigeri, M.G., David, T.P., Hiremath, S.C., Iyengar, P.K., Mehta, M.K., Raju, V.S., Singh, P., Soni, J.N.: Pramana19, 323 (1982)
Krishnamurthy, G., Rao, P.M.R., Sarma, Y.A., Bhattacharya, S.S.: BARC Report1218, 1983
Marion, J.B., Young, F.C.: Nuclear reaction analysis: graphs and tables. pp 43. Amsterdam: North Holland 1968
Nussbaumer, H., Storey, P.J.: Astron. Astrophys.126, 75 (1983)
Nussbaumer, H., Storey, P.J.: Astron. Astrophys. Suppl. Ser.56, 293 (1984)
Northcliffe, L.C., Schilling, R.F.: Nucl. Data Tables. A27, 233 (1970)
Pinnington, E.H.: Nucl. Instrum. Methods90, 93 (1970)
Lewis, M.R., Zimnoch, F.S.: Phys. Rev.178, 49 (1969)
Druetta, M., Poulizac, M.C., Desesquelles, J.: J. Opt. Soc. Am.60, 1463 (1970)
Martinson, I., Berry, H.G., Bickel, W.S. Oona, H.: J. Opt. Soc. Am.61, 519 (1971)
Wiese, W.L.: Progress in atomic spectroscopy, Part B. pp 1101. Hanle, W., Kleinpoppen, H.: (eds.) New York: Plenum Press 1979
Bates, D.R., Damgaard, A.: Phil. Trans. R. Soc. (London) Ser. A242, 101 (1949)
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Analytical Chemistry Division
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Mythili, R., Singh, P., Bhattacharya, P.K. et al. Measurement of excitation functions and radiative lifetimes of oxygen ions. Z Phys D - Atoms, Molecules and Clusters 7, 311–318 (1988). https://doi.org/10.1007/BF01439801
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DOI: https://doi.org/10.1007/BF01439801