Surprising properties of the nuclear stratosphere indicated by energy spectra and large-angle correlations between 4He and 1,2,3H or 4He
Angular and energy distributions are reported for 4He in correlation with 1,2,3H and 4He in the reaction 337 MeV 40Ar+natAg. Comparisons are made to a statistical model that includes emitter. Energy spectra important barrier reductions compared to those for cold nuclei, ~25%, 12%, 8% and 0 for 1H, 4He, 2H and 3H respectively. Emitter deformation alone cannot give an explanation. A transitory nuclear stratosphere is suggested with proton emission favored from its fringes of lowest density.