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This paper describes the unfolding of the solar modulated galactic cosmic rayH and He nuclei spectra beyond ~105 AU in the heliosheath. Between 2008.0 and2012.3 when Voyager 1 went from about 105 to 120.5 AU the spectral intensitiesof these two components between about 30 and 500 MeV/nuc unfolded (increased)in a manner consistent with an average modulation potential decrease ~5 MV perAU as described by a Parker like cosmic ray transport in the heliosphere wherethe overall modulation is described by a modulation potential in MV. Between120.5 and 121.7 AU, however, as a result of two sudden intensity increasesstarting on May 8th and August 25th, 2012, this modulation potential decreasedby ~80 MV and spectra resembling possible local interstellar spectra for H andHe were revealed. Considering these spectra to be the local interstellarspectra would imply that almost 1/3 of the total modulation potential of about270 MV required to explain the spectra of these components observed at theEarth must occur in just a 1 AU radial interval in the outer heliosheath. As aresult about ~80% of the total modulation potential observed at the Earth atthis time occurs in the heliosheath itself. The remaining 20% of the totalmodulation occurs inside the heliospheric termination shock. The details ofthese intensity changes and their description by a simple modulation model arediscussed.

The Unfolding of the Spectra of Low Energy Galactic Cosmic Ray H and He  Nuclei as the Voyager 1 Spacecraft Exits the Region of Heliospheric  Modulation