Accession Number : AD0480764
Title : RESEARCH IN CONVENTIONAL AND UNCONVENTIONAL FUELS.
Descriptive Note : Annual summary rept. 1 Jan-31 Dec 65,
Corporate Author : TEXACO RESEARCH CENTER BEACON N Y
Personal Author(s) : Caffrey,James M. ,Jr. ; Ludlum ,Kenneth H. ; Larson,Lewis P.
Report Date : JAN 1966
Pagination or Media Count : 75
Abstract : A time sampling light absorption apparatus and technique capable of detecting the helium molecule was devised. The destruction of the helium molecule by thermal electrons with an activation energy of 0.07 ev was observed. Correspondence between the measured activation energy and theoretical estimates was good. The destruction of the helium molecule by impurities was observed to have a cross section of 1.02 x 10 to the -16 power sq cm. At least two energetic species were found to be trapped in the neon matrix from a neon plasma. Spectral features appearing between 3000-3500 A where shown by isotope studies to be due to nitrogen. The other energetic species exhibiting bands between 2000-2500 A is unknown. No isotopic shifts of these bands were observed for neon-22, deuterium, nitrogen-15, oxygen-18 or helium-3. With the exception of helium, all impurities decrease the intensity of these bands. Use of windows of cesium bromide, cesium iodide and sodium chloride yielded similar results eliminating color centers in the window material as a cause of the bands. Attempts to detect metastable species in liquid helium by light absorption were unsuccessful because of scattering centers formed in the liquid helium. Apparatus for an electric probe experiment in liquid helium was developed but it was not adequately evaluated. (Author)
Descriptors : (*FUELS, FEASIBILITY STUDIES), (*LIQUID ROCKET FUELS), INSTRUMENTATION, LIQUEFIED GASES, HELIUM, ROCKET PROPULSION, IMPURITIES, CESIUM COMPOUNDS, BROMIDES, ABSORPTION, MOLECULAR STRUCTURE, LOW TEMPERATURE, ELECTRONS, STABILITY, EMISSIVITY, PHASE STUDIES, NEON, ISOTOPES, BAND SPECTRA, CRYOGENICS, MIXTURES, EXCITATION, SOLIDIFIED GASES, MATHEMATICAL ANALYSIS, SPECIAL FUNCTIONS(MATHEMATICAL), EXPERIMENTAL DATA
Subject Categories : Electric and Ion Propulsion
Distribution Statement : APPROVED FOR PUBLIC RELEASE