Artículo
Macri, P.A.; Miraglia, J.E.; Hanssen, J.; Fojón, O.A.; Rivarola, R.D. "Evidence of two-channel distortion effects in positronium formation reactions" (2004) Journal of Physics B: Atomic, Molecular and Optical Physics. 37(6):L111-L119
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Abstract:
The formation of ground-state positronium in collisions of positrons on hydrogen-like atoms is considered. In previous theoretical works, two-centre distorted wavefunctions were employed to approximate either the initial or the final channel. Here we report results obtained by means of the eikonal final state continuum distorted wave approximation for which asymptotically correct distorted wavefunctions are used for both the initial and final states of the scattering system. Comparison of the present theoretical total cross sections with experimental data reveals that distortion effects become important in both channels as the impact energy decreases. This work also shows that distorted-wave theories may be extended from their usual domain of high impact energies to lower ones.
Registro:
| Documento: | Artículo |
| Título: | Evidence of two-channel distortion effects in positronium formation reactions |
| Autor: | Macri, P.A.; Miraglia, J.E.; Hanssen, J.; Fojón, O.A.; Rivarola, R.D. |
| Filiación: | Inst. de Astron./Fis. del Espacio, Consejo Nac. de Invest. Cie./Tec., Universidad de Buenos Aires, Casilla de Correo 67, Suc. 28, 1428 Buenos Aires, Argentina Lab. Phys. Molec. et des Collisions, Institute de Physique Rue Arago, Técnopôle 2000, Metz, France Inst. de Física de Rosario, Consejo Nac. de Invest. Cie./Tec., Universidad Nacional de Rosario, Av. Pellegrini 250, 2000 Rosario, Argentina |
| Palabras clave: | Impact energy; Positroniums; Wavefunctions; Approximation theory; Charge transfer; Continuum mechanics; Electrodynamics; Electrons; Ground state; Isotopes; Protons; Quantum theory; High energy physics |
| Año: | 2004 |
| Volumen: | 37 |
| Número: | 6 |
| Página de inicio: | L111 |
| Página de fin: | L119 |
| DOI: | http://dx.doi.org/10.1088/0953-4075/37/6/L01 |
| Título revista: | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Título revista abreviado: | J Phys B At Mol Opt Phys |
| ISSN: | 09534075 |
| CODEN: | JPAPE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09534075_v37_n6_pL111_Macri |
Referencias:
- Massey, H.S.W., Mohr, C.B.O., (1954) Proc. R. Soc. Lond. A, 67, p. 695
- Bransden, B.H., Noble, J.C., (1994) Adv. At. Mol. Opt. Phys., 32, p. 19
- Cheshire, I.M., (1964) Proc. Phys. Soc., 84, p. 89
- Crothers, D.S.F., (1982) J. Phys. B: At. Mol. Phys., 15, p. 2061
- Crothers, D.S.F., McCann, J.F., (1983) J. Phys. B: At. Mol. Phys., 16, p. 3229
- Miraglia, J.E., (1984) Phys. Rev. A, 30, p. 1721
- Martínez, A.E., Bullrich, J.A., Maidagan, J.M., Rivarola, R.D., (1992) J. Phys. B: At. Mol. Opt. Phys., 25, p. 1883
- Busnengo, H.F., Martínez, A.E., Rivarola, R.D., (1995) Phys. Scr., 51, p. 190
- Busnengo, H.F., Martínez, A.E., Rivarola, R.D., (1996) J. Phys. B: At. Mol. Opt. Phys., 29, p. 4193
- Jones, S., Madison, D.H., (1998) Phys. Rev. Lett., 81, p. 2886
- Bransden, B.H., Joachain, C.J., McCann, J.F., (1992) J. Phys. B: At. Mol. Opt. Phys., 25, p. 4965
- Fojón, O.A., Rivarola, R.D., Gayer, R., Hanssen, J., Hervieux, P.A., (1997) J. Phys B: At. Mol. Opt. Phys., 30, p. 2199
- Fojón, O.A., Gayet, R., Hanssen, J., Rivarola, R.D., (1995) Phys. Scr., 52, p. 204
- Fojón, O.A., Gayet, R., Hanssen, J., Rivarola, R.D., (1995) Phys. Scr., 52, p. 607
- Gravielle, M.S., Miraglia, J.E., (1992) Comput. Phys. Commun., 69, p. 53
- Thomas, L.H., (1927) Proc. R. Soc. Lond. A, 114, p. 561
- Fainstein, P.D., Rivarola, R.D., (1987) J. Phys. B: At. Mol. Phys., 20, p. 1285
- Weber, M., Hofmann, A., Raith, W., Sperber, W., Jacobsen, F., Lynn, K.G., (1994) Hyperfine Interact., 89, p. 221
- Sperber, W., Becker, D., Lynn, K.G., Raith, W., Schwab, A., Sinapius, G., Spicher, G., Weber, M., (1992) Phys. Rev. Lett., 68, p. 3690
- Zhou, S., Li, H., Kauppila, W.E., Kwan, C.K., Stein, T.S., (1997) Phys. Rev. A, 55, p. 361
- Zhou, S., Kauppila, W.E., Kwan, C.K., Stein, T.S., (1994) Phys. Rev. Lett., 72, p. 1443
- Mitroy, J., (1996) J. Phys. B: At. Mol. Opt. Phys., 29, pp. L263
- Kernoghan, A.A., McAlinden, M.T., Walters, H.R.J., (1995) J. Phys. B: At. Mol. Opt. Phys., 28, p. 1079
- Walters, H.R.J., Kernoghan, A.A., McAlinden, M.T., (1995) AIP Conf. Proc., 360, p. 397
- Kernoghan, A.A., Robinson, D.J.R., McAlinden, M.T., Walters, H.R.J., (1996) J. Phys. B: At. Mol. Opt. Phys., 29, p. 2089
Citas:
---------- APA ----------
Macri, P.A., Miraglia, J.E., Hanssen, J., Fojón, O.A. & Rivarola, R.D. (2004) . Evidence of two-channel distortion effects in positronium formation reactions. Journal of Physics B: Atomic, Molecular and Optical Physics, 37(6), L111-L119.http://dx.doi.org/10.1088/0953-4075/37/6/L01
---------- CHICAGO ----------
Macri, P.A., Miraglia, J.E., Hanssen, J., Fojón, O.A., Rivarola, R.D. "Evidence of two-channel distortion effects in positronium formation reactions" . Journal of Physics B: Atomic, Molecular and Optical Physics 37, no. 6 (2004) : L111-L119.http://dx.doi.org/10.1088/0953-4075/37/6/L01
---------- MLA ----------
Macri, P.A., Miraglia, J.E., Hanssen, J., Fojón, O.A., Rivarola, R.D. "Evidence of two-channel distortion effects in positronium formation reactions" . Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 37, no. 6, 2004, pp. L111-L119.http://dx.doi.org/10.1088/0953-4075/37/6/L01
---------- VANCOUVER ----------
Macri, P.A., Miraglia, J.E., Hanssen, J., Fojón, O.A., Rivarola, R.D. Evidence of two-channel distortion effects in positronium formation reactions. J Phys B At Mol Opt Phys. 2004;37(6):L111-L119.http://dx.doi.org/10.1088/0953-4075/37/6/L01
