Accession Number : AD0837039
Title : BEAMS OF CONDENSED ATOMS AND MOLECULES IN A HIGH VACUUM (STRAHLEN AUS KONDENSIERTEN ATOMEN UND MOLEKELN IM HOCHVAKUUM),
Corporate Author : AMERICAN METEOROLOGICAL SOCIETY BOSTON MA
Personal Author(s) : Becker, E. W. ; Bier, K. ; Henkes, W.
Report Date : JUL 1964
Pagination or Media Count : 11
Abstract : Under suitable conditions, partial condensation of particles can be achieved during the generation of molecular beams with a Laval nozzle, leading to an unusual increase in beam intensity in a high vacuum. The relative half-value width of the velocity distribution of a condensed argon beam, measured with a transit-time method, turns out to be less than 5%; its upper limit is set only by the resolution of the measuring apparatus. The rise in the velocity of the condensed beam with intake pressure indicates that at least a part of the heat of condensation is converted to ordered mechanical energy in the nozzle. (Author)
Descriptors : (*LAVAL NOZZLES, MOLECULAR BEAMS), ARGON, CONDENSATION, NITROGEN, PRESSURE, GAS FLOW, COOLANTS, HYDROGEN, LIQUEFIED GASES, PARTICLES, INTENSITY, MANOMETERS, CONDENSATION, THERMODYNAMICS, WEST GERMANY, VACUUM APPARATUS.
Subject Categories : Nuclear Physics & Elementary Particle Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE