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

Observations of light isotopes in cosmic rays provide valuable information ontheir origin and propagation in the Galaxy. Using the data collected by theAMS-01 experiment in the range ~0.2-1.5 GeV/nucleon, we compare themeasurements on 1H, 2H, 3He, and 4He with calculations for interstellarpropagation and solar modulation. These data are described well by adiffusive-reacceleration model with parameters that match the B/C ratio data,indicating that He and heavier nuclei such as C-N-O experience similarpropagation histories. Close comparisons are made within the astrophysicalconstraints provided by the B/C ratio data and within the nuclear uncertaintiesarising from errors in the production cross-section data. The astrophysicaluncertainties are expected to be dramatically reduced by the data upcoming fromAMS-02, so that the nuclear uncertainties will likely represent the mostserious limitation on the reliability of the model predictions. On the otherhand, we find that secondary-to-secondary ratios such as 2H/3He, 6Li/7Li or10B/11B are barely sensitive to the key propagation parameters and canrepresent a useful diagnostic test for the consistency of the calculations.

Propagation of H and He cosmic ray isotopes in the Galaxy: astrophysical and nuclear uncertainties