Assertion: proton's life | /r/CapableOf | reach maximum
Facets:
value: at the shell closures
type: LOCATION
Source sentences:
text: A modified formula considering shell effects reproduces known data and the predicted island of stability (in which fission barriers and half-lives are expected to increase, reaching a maximum at the shell closures), though also suggests a possible limit to existence of superheavy nuclei beyond Z = 120 and N = 184.