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

The hindrance phenomenon of heavy-ion fusion cross sections at deepsubbarrier energies often accompanies a maximum of an astrophysical $S$ factorat a threshold energy for fusion hindrance. We argue that this phenomenon cannaturally be explained when the fusion excitation function is fitted with twopotentials, with a larger (smaller) logarithmic slope at energies lower(higher) than the threshold energy. This analysis clearly suggests that theastrophysical $S$ factor provides a convenient tool to analyze the deepsubbarrier hindrance phenomenon, even though the $S$ factor may have a strongenergy dependence for heavy-ion systems unlike that for astrophysicalreactions.

Origin of a maximum of astrophysical $S$ factor in heavy-ion fusion reactions at deep subbarrier energies