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Referencias:

• Levin, J.C., Lindle, D.W., Keller, N., Miller, R.D., Azuma, Y., Berrah Mansour, N., Berry, H.G., Sellin, I.A., (1991) Phys. Rev. Lett., 67, p. 968
• Levin, J.C., Sellin, I.A., Johnson, B.M., Lindle, D.W., Miller, R.D., Berrah, N., Azuma, Y., Lee, D.-H., (1993) Phys. Rev. A, 47, p. R16
• Åberg, T., (1970) Phys. Rev. A, 2, p. 1726
• Dalgarno, A., Sadeghpour, H.R., (1992) Phys. Rev. A, 46, p. R3591
• Andersson, L.R., Burgdörfer, J., (1993) Phys. Rev. Lett., 71, p. 50
• Hino, K., Ishihara, T., Shimizu, F., Toshima, N., McGuire, J.H., (1993) Phys. Rev. A, 48, p. 1271
• Kornberg, M.A., Miraglia, J.E., (1993) Phys. Rev. A, 48, p. 3714
• Hino, K., (1993) Phys. Rev. A, 47, p. 4845
• Teng, Z.-J., Shakeshaft, R., (1994) Phys. Rev. A, 49, p. 3597
• Kornberg, M.A., Miraglia, J.E., (1994) Phys. Rev. A, 49, p. 5120
• Berrah, N., Heiser, F., Wehlitz, R., Levin, J., Whitfield, S.B., Viefhaus, J., Sellin, I.A., Becker, U., (1993) Phys. Rev. A, 48, p. R1733
• Bechler, A., Pratt, R.H., (1990) Phys. Rev. A, 42, p. 6400
• Samson, J.A.R., Greene, C.H., Bartlett, R.J., (1993) Phys. Rev. Lett., 71, p. 201
• Hino, K., Bergstrom, P.M., Macek, J.H., (1994) Phys. Rev. Lett., 72, p. 1620
• Huetz, A., Selles, P., Waymel, D., Mazeau, J., (1991) J. Phys. B, 24, p. 1917
• Bonham, R.A., Kohl, D.A., (1966) J. Chem. Phys., 45, p. 2471
• The wave functions are of the form ψi(r1,r2)=Ni(e-ar1e-br2+e-br1e-ar2)(1+C0e-λ0r12). The parameters for GS1 and GS2 wave functions are reported in that work; See also Table I of Ref. 6 ; Sabelli, N., Hinze, J., (1969) J. Chem. Phys., 50, p. 648
• We used the same choice of basis functions and optimized parameters as in that work; Brauner, M., Briggs, J.S., Klar, H., (1989) J. Phys. B, 22, p. 2265
• Byron, F.W., Joachain, C.J., (1966) Phys. Rev. Lett., 16, p. 1139. , Correlation in the final and initial states cannot be turned off completely, because in this case we shall obtain σ2+=0 [, ]. In our approximation C2-GS1 the correlation is not turned off completely but incorporated weakly. The asymptotic cross sections, nevertheless, do not differ by more than 15% from more precise calculations (compare Table I of this paper with Table II of Ref. 6 )
• Rodríguez, V.D., Kornberg, M.A., Falcón, C.A., (1992) Collision Processes of Ion, Positron, Electron and Photon Beams with Matter, Proceedings of the Latin American School of Physics, Caxambu, Brazil, 1991, pp. 437-446. , edited by, C. A. C. Souza, et al., World Scientific, Singapore
• Manson, S.T., Starace, A.F., (1982) Rev. Mod. Phys., 54, p. 389. , The Β parameter for the single photoionization of s-subshell electrons is in general energy dependent [, ]. However, the energy-independent value Β=2.0 occurs in the single photoionization of He(1S0), leaving behind the ionic ground state of He+(1s). The single photoionization of He(1S0) with additional excitation leaving the ion in a He+(ns) state also gives Β→2.0 as Eγ→∞. This last feature has been recently proved experimentally , 26, L783, R. Wehlitz, B. Langer, N. Berrah, S. B. Whitfield, J. Viefhaus, U. Becker, J. Phys. B
• Wehlitz, R., Heiser, F., Hemmers, O., Langer, B., Menzel, A., Becker, U., (1991) Phys. Rev. Lett., 27, p. 3764
• The additional constraint φ1=90° would be required. The 3DCS at θ1=54.73° and φ1=90° also has deviations from the symmetric dipole case: using the C2-SH models we have observed deviations of 1.8%, 3.6%, and 23.0% for 1.0, 3.0, and 12.0 keV, respectively; Huang, K.N., (1980) Phys. Rev. A, 22, p. 223
• Pratt, R.H., Ron, A., Tseng, H.K., (1973) Rev. Mod. Phys., 45, p. 273
• Stewart, A.L., Webb, T.G., (1963) Proc. Phys. Soc. London, 82, p. 532
• Wehlitz, R., (private communication). These experiments could be feasible up to 1.5 keV; Gravielle, M.S., Miraglia, J.E., (1992) Comput. Phys. Commun., 69, p. 53
• Gravielle, M.S.,

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