Abstract:
We analyze different methods to extract from ionic measurements electron-atom scattering parameters, such as the scattering length. Different generalizations of O'Malley et al.'s modified effective range theory, such as for instance Fabrikant's approach or the multichannel theory of Watanabe and Greene, are used in the literature to fit the experimental data. In this communication we propose a different approach that provides a significant improvement over other methods on a much broader range of energies. We discuss its applicability in the case of negative ion photodetachment and in coincidence measurements of electron capture and loss to the continuum in atomic collisions. © 2003 Elsevier Science B.V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Extracting low-energy electron-atom scattering parameters from ionic measurements |
Autor: | Macri, P.; Barrachina, R.O.; Cassimi A; Gervais B; Vernhet D |
Ciudad: | Caen |
Filiación: | Inst. de Astron./Fis. del Espacio, Casilla de Correo 67, Suc. 28, 1428 Buenos Aires, Argentina Centro Atómico Bariloche, Instituto Balseiro, 8400 S.C. de Bariloche, Rio Negro, Argentina
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Palabras clave: | Effective range theory; Ionization; Electron scattering; Elementary particles; Ionization; Fabrikant approach; Atomic physics |
Año: | 2003
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Volumen: | 205
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Página de inicio: | 543
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Página de fin: | 545
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DOI: |
http://dx.doi.org/10.1016/S0168-583X(02)02062-1 |
Título revista: | HCI - 2001
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Título revista abreviado: | Nucl Instrum Methods Phys Res Sect B
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ISSN: | 0168583X
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CODEN: | NIMBE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0168583X_v205_n_p543_Macri |
Referencias:
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Citas:
---------- APA ----------
Macri, P., Barrachina, R.O., Cassimi A, Gervais B & Vernhet D
(2003)
. Extracting low-energy electron-atom scattering parameters from ionic measurements. HCI - 2001, 205, 543-545.
http://dx.doi.org/10.1016/S0168-583X(02)02062-1---------- CHICAGO ----------
Macri, P., Barrachina, R.O., Cassimi A, Gervais B, Vernhet D
"Extracting low-energy electron-atom scattering parameters from ionic measurements"
. HCI - 2001 205
(2003) : 543-545.
http://dx.doi.org/10.1016/S0168-583X(02)02062-1---------- MLA ----------
Macri, P., Barrachina, R.O., Cassimi A, Gervais B, Vernhet D
"Extracting low-energy electron-atom scattering parameters from ionic measurements"
. HCI - 2001, vol. 205, 2003, pp. 543-545.
http://dx.doi.org/10.1016/S0168-583X(02)02062-1---------- VANCOUVER ----------
Macri, P., Barrachina, R.O., Cassimi A, Gervais B, Vernhet D Extracting low-energy electron-atom scattering parameters from ionic measurements. Nucl Instrum Methods Phys Res Sect B. 2003;205:543-545.
http://dx.doi.org/10.1016/S0168-583X(02)02062-1