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There are a total of 28 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Characteristics of the MSFC, PDS microdensitometer
Author(s): Fountain, W. F.; Gary, G. A.; Oda, H.
Abstract: The results of several parametric studies carried out on the Marshall Space Flight Center (MSFC) Photometric Data System PDS-10 microdensitometer are summarized for the purposes of documenting the operation and limitations ...
NASA Center: Marshall Space Flight Center
Publication Year: 1984
Added to NTRS: 2005-11-01
Accession Number: 84N28026; Document ID: 19840019957
A computer system to analyze showers in nuclear emulsions: Center Director's discretionary fund report
Author(s): Meegan, C. A.; Fountain, W. F.; Berry, F. A., Jr.
Abstract: A system to rapidly digitize data from showers in nuclear emulsions is described. A TV camera views the emulsions though a microscope. The TV output is superimposed on the monitor of a minicomputer. The operator uses the ...
NASA Center: Marshall Space Flight Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N28403; Document ID: 19870018970; Report Number: NAS 1.15:100310, NASA-TM-100310
Nucleus (22 less than or equal to Zsubp less than or equal to 28)-nucleus interactions between 20 and 65 GeV per nucleon
Author(s): Burnett, T. H.; Dake, S.; Derrickson, J. H.; Fountain, W. F.; Fuki, M.; Gregory, J. C.; Hayashi, T.; Hayashi, T.; Holynski, R.; Iwai, J., et al.
Abstract: No Abstract Available
NASA Center: Marshall Space Flight Center
Publication Year: 1985
Added to NTRS: 2005-10-13
Accession Number: 87N70494; Document ID: 19870067597; Report Number: NAS 1.15:89382, NASA-TM-89382
Measurements and calculations of the Coulomb cross section for the production of direct electron pairs by energetic heavy nuclei in nuclear track emulsion
Author(s): Derrickson, J. H.; Eby, P. B.; Fountain, W. F.; Parnell, T. A.; Dong, B. L.; Gregory, J. C.; Takahashi, Y.; King, D. T.
Abstract: Measurements and theoretical predictions of the Coulomb cross section for the production of direct electron pairs by heavy ions in emulsion have been performed. Nuclear track emulsions were exposed to the 1.8 GeV/amu Fe-56 ...
NASA Center: Marshall Space Flight Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 89N15692; Document ID: 19890006321; Report Number: NAS 1.15:100347, NASA-TM-100347
New calculations and measurements of the Coulomb cross-section for the production of direct electron pairs by high energy nuclei
Author(s): Derrickson, J. H.; Dake, S.; Dong, B. L.; Eby, P. B.; Fountain, W. F.; Fuki, M.; Gregory, J. C.; Hayashi, T.; Iyono, A.; King, D. T., et al.
Abstract: Recently, new calculations were made of the direct Coulomb pair cross section that rely less in arbitrary parameters. More accurate calculations of the cross section down to low pair energies were made. New measurements of ...
NASA Center: Marshall Space Flight Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 90N22371; Document ID: 19900013055; Report Number: NAS 1.15:101280, NASA-TM-101280
Atmospheric Nitrogen Fluorescence Yield
Author(s): Adams, J. H., Jr.; Christl, M. J.; Fountain, W. F.; Gregory, J. C.; Martens, K. U.; Sokolsky, Pierre
Abstract: Several existing and planned experiments estimate the energies of ultra-high energy cosmic rays from air showers using the atmospheric nitrogen fluorescence. The nitrogen fluorescence yield from air shower electrons depends ...
NASA Center: Marshall Space Flight Center
Publication Year: 2001
Added to NTRS: 2004-11-03
Document ID: 20010086591
Spectrographic observations of comet West /1975 n/
Author(s): Gary, G. A.; Fountain, W. F.; Odell, C. R.
Abstract: The spectrum of comet West (1975 n) was recorded on March 7 and 11, 1976, in the wavelength interval from 5700 to 8200 A at an intermediate resolution. One hundred twenty-two emission lines are reported, with 78 lines having ...
NASA Center: Marshall Space Flight Center
Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 77A26172; Document ID: 19770043320
Primary cosmic ray spectra in the range 20-60 GeV/n
Author(s): Burnett, T. H.; Dake, S.; Derrickson, J. H.; Fuki, M.; Fountain, W. F.; Gregory, J. C.; Hayashi, T.; Hayashi, T.; Holynski, R.; Iwai, J.; Jones, W. V.
Abstract: Energy spectra for primary cosmic rays C-Fe above 20 GeV/n were measured on a balloon flight from Greenville S.C. in June 1982 with a hybrid electronic counter-emulsion chamber experiment. Fluxes above the atmosphere appear ...
NASA Center: Marshall Space Flight Center
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85N34015; Document ID: 19850025702; Report Number: OG-4.1-9
A study of H-alpha velocities in NGC 1499, NGC 7000, and IC 1318B/C
Author(s): Fountain, W. F.; Gary, G. A.; Odell, C. R.
Abstract: Multiple slit echelle spectrograph observations of the H-alpha emission line are used to map the radial velocities of the California Nebula (NGC 1499), the North American Nebula complex (NGC 7000 and IC 5070), and IC ...
NASA Center: Marshall Space Flight Center
Publication Year: 1983
Added to NTRS: 2004-11-03
Accession Number: 83A34626; Document ID: 19830053408
Nucleus-nucleus interactions between 20 and 65 GeV per nucleon
Author(s): Burnett, T. H.; Derrickson, J. H.; Fountain, W. F.; Meegan, C. A.; Parnell, T. A.; Roberts, F. E.; Watts, J. W.; Oda, H.; Takahashi, Y.; Jones, W. V., et al.
Abstract: A hybrid electronic-counter/emulsion-chamber instrument was exposed to high-energy cosmic rays on a balloon. The data on 105 nucleus-nucleus collisions in the energy range 20-65 GeV/nucleon and for incident nuclear charges ...
NASA Center: Marshall Space Flight Center
Publication Year: 1987
Added to NTRS: 2004-11-03
Accession Number: 87A48325; Document ID: 19870061051
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