Triply differential measurements of single ionization of argon by 1-keV positron and electron impact

Autor:	Robert D. DuBois, J. Gavin, O.G. de Lucio
Rok vydání:	2017
Předmět:	Physics Argon Scattering chemistry.chemical_element Electron 01 natural sciences 030218 nuclear medicine & medical imaging Ion 03 medical and health sciences 0302 clinical medicine Recoil Positron chemistry Ionization 0103 physical sciences Atomic physics 010306 general physics Electron ionization
Zdroj:	Physical Review A. 95
ISSN:	2469-9934 2469-9926
Popis:	By establishing coincidences between target ions and scattered projectiles, and coincidences between target ions, scattered projectiles, and ejected electrons, triply differential cross-section (TDCS) information was generated in terms of projectile energy loss and scattering angles for interactions between 1-keV positrons and electrons and Ar atoms. The conversion of the raw experimental information to the TDCS is discussed. The single-ionization TDCS exhibits two distinguishable regions (lobes) where binary and recoil interactions can be described by two peaks. A comparison of the positron and electron impact data shows that the relative intensity of both binary and recoil interactions decreases exponentially as a function of the momentum transfer and is larger when ionization is induced by positron impact, when compared with electron impact.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9afe68fc21faaa9e4e088b96402a3673 https://doi.org/10.1103/physreva.95.062703 Zobrazit plný text záznamu