Title

Differential Ionization Studies for Positron Impact

Abstract

Recent studies of differential ionization by positron impact being performed at the University of Missouri- Rolla are described. Recoil ion-scattered positron and recoil ion-scattered positron-ejected electron coincidences are measured to provide doubly and triply differential ionization data (DDCS and TDCS) for e+ - Ar collisions. The DDCS and TDCS studies are for 750 and 200 eV impact respectively. For the TDCS studies the positron scattering angles are between approximately § 5± and electrons ejected with energies less than 15 eV and angles between 90± § 50± with respect to the beam direction are detected. Examples of TDCS data for the scattered positron and the ejected electron are presented.

Department(s)

Physics

Sponsor(s)

National Science Foundation (U.S.)

Keywords and Phrases

Differential; Ionizations; Positrons

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2006 Sociedade Brasileira de Fisica (Brazilian society of Physics), All rights reserved.

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