English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Even though ion/atom-collision is a mature field of atomic physics greatdiscrepancies between experiment and theoretical calculations are still common.Here we present experimental results with highest momentum resolution on singleionization of helium induced by 1\,MeV protons and compare these to differenttheoretical calculations. The overall agreement is strikingly good and alreadythe first Born approximation yields good agreement between theory andexperiment. This has been expected since several decades, but so far has notbeen accomplished. The influence of projectile coherence effects on themeasured data is shortly discussed in line with an ongoing dispute on theexistence of nodal structures in the electron angular emission distributions.

Agreement at last: an experimental and theoretical study on the single ionization of helium by fast proton impact