An Atomic Oxygen Beam System for the Investigation of Mass Spectrometer Response in the Upper Atmosphere
dc.contributor.author | Niemann, Hasso Bernhard Otto | en_US |
dc.date.accessioned | 2010-05-06T22:56:10Z | |
dc.date.available | 2010-05-06T22:56:10Z | |
dc.date.issued | 1972-08 | en_US |
dc.identifier.citation | Niemann, Hasso B. (1972). "An Atomic Oxygen Beam System for the Investigation of Mass Spectrometer Response in the Upper Atmosphere." Review of Scientific Instruments 43(8): 1151-1161. <http://hdl.handle.net/2027.42/70929> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/70929 | |
dc.description.abstract | An atomic oxygen beam system has been designed and tested for the laboratory evaluation of mass spectrometers used in upper atmospheric measurements. The atomic oxygen is generated by thermal dissociation of molecular oxygen on the surface of a tungsten filament heated to 2800 K. A symmetrical bidirectional beam is produced to permit simultaneous monitoring of the particle flux in the beam while target experiments are being conducted. Flux levels of 5×1014 particles cm−2 sec−1 over a cross‐sectional area of 1 cm2 have been produced with a relative atomic oxygen concentration of 70%. At flux levels below 1013 particles cm−2 sec−1, relative atomic oxygen concentrations of more than 90% were obtained. The oxygen beam is of high purity and free from chemically active contaminants. Strong chemical and low temperature pumping are used to reduce background gas contributions to less than 1%. Measurements of the relative atomic concentration in the beam were made with a quadrupole spectrometer using an open flowthrough ion source. The absolute flux of molecular oxygen was determined with the aid of an enclosed omegatron mass spectrometer. The combined use of both instruments permitted a determination of the magnitude of the atomic oxygen flux in the beam. | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 1118530 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | An Atomic Oxygen Beam System for the Investigation of Mass Spectrometer Response in the Upper Atmosphere | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Electrical Engineering, Space Physics Research Laboratory, The University of Michigan, Ann Arbor, Michigan 48105 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/70929/2/RSINAK-43-8-1151-1.pdf | |
dc.identifier.doi | 10.1063/1.1685865 | en_US |
dc.identifier.source | Review of Scientific Instruments | en_US |
dc.identifier.citedreference | P. O. Schissel and O. C. Trulson, J. Chem. Phys. 43, 737 (1965). | en_US |
dc.identifier.citedreference | Hasso B. Niemann and Brian C. Kennedy, Rev. Sci. Instrum. 37, 722 (1966). | en_US |
dc.identifier.citedreference | C. Brunee, L. Delgmann, and K. Kronenberger, “The Atlas Quadrupole Mass Spectrometer,” paper presented at Mass Spectrometry Conference, ASTM Committee E‐14, San Francisco, (1963). Published by Atlas Mess‐und‐Analysen Technik, GmbH, Bremen, Germany. | en_US |
dc.identifier.citedreference | W. L. Fite and R. T. Brackmann, Phys. Rev. 113, 815 (1959). | en_US |
dc.identifier.citedreference | L. J. Kieffer and Gordon H. Dunn, Rev. Mod. Phys. 38, 1 (1966). | en_US |
dc.identifier.citedreference | N. W. Spencer, L. H. Brace, H. B. Niemann, G. R. Carignan, and D. R. Taeusch, 6th Intern. Space Sci. Symp. Space Res. VI (1965). | en_US |
dc.identifier.citedreference | J. E. Morgan and H. I. Schiff, McGill University, Montreal, Province of Quebec, Canada, (1965), Tech. Rep. Contract No. AF19(628)‐2425. | en_US |
dc.identifier.citedreference | R. E. Clausing, 1961 Trans. 8th Natl. Vac. Symp. (Amer. Vac. Soc.) Combined with the 2nd Intern. Cong. Vac. Sci. Technol. (Intern. Org. Vac. Sci. Technol.) 1, 345 (1962). | en_US |
dc.identifier.citedreference | H. Wise, B. J. Wood, and Y. Rajapakse, Phys. Fluids 9, 1321 (1966). | en_US |
dc.owningcollname | Physics, Department of |
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