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Ambrosio, M.J.; Ancarani, L.U.; Gómez, A.I.; Gaggioli, E.L.; Mitnik, D.M.; Gasaneo, G. "Double ionization of helium by proton impact: from intermediate to high momentum transfer" (2017) European Physical Journal D. 71(5)
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Abstract:

Abstract: We study theoretically the double ionization of helium by 6 MeV proton impact. For such fast projectiles, when considering the projectile-target interaction to first order, the four-body Schrödinger equation reduces to solving a three-body driven equation. We solve it with a generalized Sturmian functions approach and, without evaluating a transition matrix element, we extract the transition amplitude directly from the asymptotic limit of the first order scattering solution. Fivefold differential cross sections (FDCS) are calculated for the double ionization process for a number of coplanar kinematical situations. We present a detailed theory-experiment comparison for intermediate momentum transfers (from 0.8 to 1.2 a.u. and from 1.4 to 2.0 a.u.). In spite of some experimental restrictions (energy and momentum ranges) and the low count rates, we found that our theoretical description provides a very satisfactory reproduction of the measured data on relative scale. We then explore how the binary, recoil and back-to-back structures change with increasing momentum transfers (0.853 to 1.656, to 3.0 a.u.). Within the impulsive regime, with a momentum transfer of 3.0 a.u., we also analyze the FDCS for different excess energies. Finally, in analogy to an experimentalist gathering electrons with different excess energies to obtain enough counts, we provide a collective FDCS prediction that hopefully will stimulate further measurements. Graphical abstract: [Figure not available: see fulltext.]. © 2017, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

Registro:

Documento: Artículo
Título:Double ionization of helium by proton impact: from intermediate to high momentum transfer
Autor:Ambrosio, M.J.; Ancarani, L.U.; Gómez, A.I.; Gaggioli, E.L.; Mitnik, D.M.; Gasaneo, G.
Filiación:Department of Physics, Kansas State University, Manhattan, KS 66506, United States
Théorie, Modélisation, Simulation, SRSMC, UMR CNRS 7565, Université de Lorraine, Metz, 57078, France
Departamento de Física, Universidad Nacional del Sur, 8000 Bahía Blanca, Buenos Aires, Argentina
Instituto de Astronomía y Física del Espacio (IAFE, CONICET–UBA), Casilla de Correo 67 – Suc. 28 (C1428ZAA), Ciudad Autnoma de Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Ares, 1430, Argentina
Año:2017
Volumen:71
Número:5
DOI: http://dx.doi.org/10.1140/epjd/e2017-70713-x
Título revista:European Physical Journal D
Título revista abreviado:Eur. Phys. J. D
ISSN:14346060
CODEN:EPJDF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346060_v71_n5_p_Ambrosio

Referencias:

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Citas:

---------- APA ----------
Ambrosio, M.J., Ancarani, L.U., Gómez, A.I., Gaggioli, E.L., Mitnik, D.M. & Gasaneo, G. (2017) . Double ionization of helium by proton impact: from intermediate to high momentum transfer. European Physical Journal D, 71(5).
http://dx.doi.org/10.1140/epjd/e2017-70713-x
---------- CHICAGO ----------
Ambrosio, M.J., Ancarani, L.U., Gómez, A.I., Gaggioli, E.L., Mitnik, D.M., Gasaneo, G. "Double ionization of helium by proton impact: from intermediate to high momentum transfer" . European Physical Journal D 71, no. 5 (2017).
http://dx.doi.org/10.1140/epjd/e2017-70713-x
---------- MLA ----------
Ambrosio, M.J., Ancarani, L.U., Gómez, A.I., Gaggioli, E.L., Mitnik, D.M., Gasaneo, G. "Double ionization of helium by proton impact: from intermediate to high momentum transfer" . European Physical Journal D, vol. 71, no. 5, 2017.
http://dx.doi.org/10.1140/epjd/e2017-70713-x
---------- VANCOUVER ----------
Ambrosio, M.J., Ancarani, L.U., Gómez, A.I., Gaggioli, E.L., Mitnik, D.M., Gasaneo, G. Double ionization of helium by proton impact: from intermediate to high momentum transfer. Eur. Phys. J. D. 2017;71(5).
http://dx.doi.org/10.1140/epjd/e2017-70713-x