Projectile Coherence Effects in Single Ionization of Helium

Abstract

We have measured fully differential cross sections for ionization of He by 3 MeV proton impact. A projectile beam with a coherence length larger than typical atomic scales was prepared at the Test Storage Ring taking advantage of electron cooling. Pronounced effects due to the projectile coherence are observed which are absent for an incoherent 100MeVu -1C6+ projectile beam and the present data are in much better agreement with theory. Thus, these results represent a major advancement in resolving the so far unexplained discrepancies between experiment and theory for the 100 MeV u-1 C6+ case.

Department(s)

Physics

Keywords and Phrases

Atomic Scale; Coherence Effects; Coherence Lengths; Electron Cooling; Fully Differential Cross Sections; Projectile Beam; Proton Impact; Single Ionization; Helium; Impact Ionization

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Nov 2012

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