Accession Number : AD0753219

Title :   Vacuum Sublimation of Ammonium Perchlorate.

Descriptive Note : Technical rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS

Personal Author(s) : Tang,Steve ; Fenn,John B.

Report Date : NOV 1972

Pagination or Media Count : 26

Abstract : Time-of-flight measurements have been made on the flux of molecules from the surface of ammonium salts vaporizing into vacuum. As expected with ammonium halides and ammonium bi-sulfate the TOF distributions correspond to equimolar fluxes of ammonia and the corresponding acid. In the case of ammonium perchlorate the vapor subliming from a single crystal comprised ammonia and perchloric acid. When the source was compressed powder, the vapor was a mixture of lower molecular weight species. This result seems best explained in terms of subsurface decomposition. (Author)

Descriptors :   (*AMMONIUM PERCHLORATE, *SUBLIMATION), (*DECOMPOSITION, AMMONIUM PERCHLORATE), VAPORS, VAPORIZATION, VACUUM, SURFACES, SINGLE CRYSTALS, SOLID ROCKET OXIDIZERS, PERCHLORIC ACID, AMMONIA

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE