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

We use the recently introduced independent-atom-model pixel counting methodto calculate proton-impact net ionization cross sections for a large class ofbiologically relevant systems including pyrimidines, purines, amino acids, andnucleotides from 10 keV to 10 MeV impact energy. Overall good agreement withexperimental data, where available, is found. A scaling prescription thatinvolves coefficients derived from the independent atom model is shown torepresent the cross section results better than scalings based on the number of(bonding) valence electrons of the target molecules. It is shown that thescaled net ionization cross sections of the proton-nucleotide collision systemscan be represented in terms of a simple analytical formula with four parametersto within 3% accuracy.

Proton-impact-induced electron emission from biologically relevant molecules studied with a screened independent atom model