https://doi.org/10.1140/epja/i2007-10387-4
Regular Article - Interdisciplinary Topics
Forward and backward electron emission cross-sections for 23 MeVu-1 C , Ni and Au projectiles traversing C , Al , Ni , Ag , Au and Bi foils
1
INFN and Dipartimento di Fisica e Astronomia, Via S. Sofia 64, I-95123, Catania, Italy
2
CIRIL-GANIL, (CEA/CNRS/Université de Caen/ENSICAEN), BP 5133, F-14070, Caen Cedex 05, France
3
DAPNIA/SPhN, CEA/Saclay, F-91191, Gif-sur-Yvette Cedex, France
4
INFN-LNS, Dipartimento di Fisica e Astronomia, Via S. Sofia 44, I-95123, Catania, Italy
* e-mail: defilippo@ct.infn.it
Received:
14
January
2007
Accepted:
22
May
2007
Published online:
11
June
2007
A rather complete experimental study of forward and backward electron velocity spectra from thin foils bombarded with ions at constant velocity of 30 atomic units (23MeV u^-1) was performed. Three different beams ( 12C3+ , 58Ni14+ and 197Au36+ and six different targets ( 12C , 27Al , natNi , natAg , 197Au and 209Bi of approximately 90μg cm^-2 thickness were used. This procedure allowed to study the evolution of electron emission (velocity and angular distributions) for the [projectile; target] matrix [ C , Ni , Au ; C , Al , Ni , Ag , Au , Bi ] in a wide angular range. The projectile and target dependence of absolute cross-sections for binary encounter-, Auger- and backward-emitted electrons are analyzed.
PACS: 25.70.-z Low and intermediate energy heavy-ion reactions – / 34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization) – / 79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces –
© Società Italiana di Fisica and Springer-Verlag, 2007