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Abstract:

We present a theoretical study of the ionization of inner shells, such as L and M shells of Au, Pb and Bi or K-shell of Sb. The ionization is described using a collective response model, the shellwise local plasma approximation (SLPA). This model deals with each sub-shell of target electrons as an inhomogeneous electron gas with an ionization threshold. No parameters are included, just the theoretical wave functions of the ground state and the binding energies. The validity range is that of the perturbative approximation, high energies and asymmetric projectile target relation. In the case of Sb, known Hartree-Fock wave functions and energies are used. Instead, for Au, Pb and Bi, they were obtained in fully relativistic way by solving numerically the Dirac equation. The SLPA describes well the experimental data for K-shell ionization of Sb by O and F positive ions. However, it underestimates the data for C or lighter ions. Good results are obtained for M-shell ionization of Au and Bi above 2MeV/amu, and for L-shell ionization of Au and Pb above 10MeV/amu. For L- and M-shells, the SLPA tends to underestimate the data for energies below the range of validity of the model but approaches the experimental data for higher energies. © 2011 Taylor & Francis.

Registro:

Documento: Artículo
Título:A collective model for inner shell ionization of very heavy targets
Autor:Montanari, C.C.; Mitnik, D.M.; Miraglia, J.E.
Filiación:Instituto de Astronomía y Física del Espacio, Casilla de Correo 67, Sucursal 28, C1428EGA Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:electrons; inner-shells; ionization; ions; Dirac equations; Experimental data; Hartree-Fock wave function; High energy; Inner shell; Inner-shell ionization; inner-shells; Ionization thresholds; K-shell ionization; K-shells; L-shell ionization; Response model; Target electrons; Theoretical study; Binding energy; Electron gas; Ions; Lead; Linear equations; Radiation effects; Shells (structures); Wave functions; Ionization of gases
Año:2011
Volumen:166
Número:5
Página de inicio:338
Página de fin:345
DOI: http://dx.doi.org/10.1080/10420150.2011.572284
Título revista:Radiation Effects and Defects in Solids
Título revista abreviado:Radiat Eff Defects Solids
ISSN:10420150
CODEN:REDSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10420150_v166_n5_p338_Montanari

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Citas:

---------- APA ----------
Montanari, C.C., Mitnik, D.M. & Miraglia, J.E. (2011) . A collective model for inner shell ionization of very heavy targets. Radiation Effects and Defects in Solids, 166(5), 338-345.
http://dx.doi.org/10.1080/10420150.2011.572284
---------- CHICAGO ----------
Montanari, C.C., Mitnik, D.M., Miraglia, J.E. "A collective model for inner shell ionization of very heavy targets" . Radiation Effects and Defects in Solids 166, no. 5 (2011) : 338-345.
http://dx.doi.org/10.1080/10420150.2011.572284
---------- MLA ----------
Montanari, C.C., Mitnik, D.M., Miraglia, J.E. "A collective model for inner shell ionization of very heavy targets" . Radiation Effects and Defects in Solids, vol. 166, no. 5, 2011, pp. 338-345.
http://dx.doi.org/10.1080/10420150.2011.572284
---------- VANCOUVER ----------
Montanari, C.C., Mitnik, D.M., Miraglia, J.E. A collective model for inner shell ionization of very heavy targets. Radiat Eff Defects Solids. 2011;166(5):338-345.
http://dx.doi.org/10.1080/10420150.2011.572284