INVESTIGADORES
DELLA PICCA Renata
artículos
Título:
Vortices in ionization collisions by positron impact
Autor/es:
NAVARRETE, FRANCISCO; DELLA PICCA, RENATA; FIOL, JUAN; BARRACHINA, RAUL OSCAR
Revista:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2013 vol. 46 p. 115203 - 1152036
ISSN:
0953-4075
Resumen:
The presence of vortices in the ionisation of hydrogen atoms by positrons at intermediate impact energies is investigated. The present findings show that a previously reported minima in the fully-differential cross section is the signature of a vortex in the continuum positron-electron-proton system. The behaviour of the real and imaginary parts of the complex-valued transition matrix is studied in order to determine and characterize the vortex in momentum space. The obtained information is translated to fully-differential ionisation cross sections, feasible of being measured with currently available techniques.
