Elastic scattering of positrons by H2O at low energies



Document title: Elastic scattering of positrons by H2O at low energies
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000378500
ISSN: 0035-001X
Authors: 1
Institutions: 1Assessoria e Orientacao Estudantil, Sao Jose dos Campos, Sao Paulo. Brasil
Year:
Season: Mar-Abr
Volumen: 60
Number: 2
Pages: 156-160
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
Spanish abstract Se analiza uma aplicación del principio variacional de Schwinger desde la perspectiva de ondas planas para un conjunto base (Jorge L S Lino, Phys. Scr. 80 (2009) 065303). y sección integral and eficaz diferencial para positron- H2O en el intervalo de 1-10 eV. Los resultados obtenidos se comparan con los experimentos and (Zecca et al (J. Phys.B 39 (2006) 1597) y teóricos (Arretche et al Nucl. Instr. Meth. Phys. B 268 (2010) 178)
English abstract We present a study theoretical on elastic positron-H2 O collisions. More specifically, integral, and differential cross sections in the 1-10 eV energy range are reported. The calculations were performed using the Schwinger multichannel method with plane waves as a trial basis set (Jorge L S Lino, Phys. Scr. 80 (2009) 065303). The positron-H2O interaction is described using the static plus polarization contributions. Comparison of our calculated results with the recent experimental of Zecca et al (J.Phys.B 39 (2006) 1597) and theoretical results of Arretche et al (Nucl. Instr. Meth. Phys. B 268 (2010) 178) is encouraging
Disciplines: Física y astronomía
Keyword: Física atómica y molecular,
Positrones,
Agua,
Schwinger,
Dispersión elástica
Keyword: Physics and astronomy,
Atomic and molecular physics,
Positrons,
Water,
Schwinger,
Elastic scattering
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