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There are a total of 58 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Public health aspects of galactic radiation exposure in supersonic transport
Author(s): Schaefer, H. J.
Abstract: Galactic radiation hazards in passenger travel of supersonic transport
NASA Center: NASA (non Center Specific)
Publication Year: 1968
Added to NTRS: 2009-03-05
Accession Number: 68N25382; Document ID: 19680015910; Report Number: NAMI-1033, NASA-CR-94760
Criteria for personal dosimetry in mixed radiation fields in space
Author(s): Schaefer, H. J.
Abstract: The complexity of direct reading and passive dosimeters for monitoring radiation is studied to strike the right balance of compromise to simplify the monitoring procedure. Trapped protons, tissue disintegration stars, and ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-07-01
Accession Number: 75N12574; Document ID: 19750004502; Report Number: NAMRL-1208, NASA-CR-140365
Nuclear emulsion measurements of the astronauts' radiation exposures on Skylab missions 2, 3, and 4
Author(s): Schaefer, H. J.; Sullivan, J. J.
Abstract: On the Skylab missions, Ilford G.5 and K.2 emulsions were flown as part of passive dosimeter packs carried by the astronauts on their wrists. Due to the long mission times, latent image fading and track crowing imposed ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 76N16746; Document ID: 19760009658; Report Number: NAMRL-1220, NASA-CR-147436
Microdosimetric structure of HZE particle tracks in tissue
Author(s): Schaefer, H. J.
Abstract: Heavy nuclei of the primary galactic radiation in space can have the same linear energy transfer yet greatly different lateral distribution patterns of the energy in the microstructure of tissue. Track structure thus ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 75N28696; Document ID: 19750020623; Report Number: NAMRL-1214, NASA-CR-141935
A note on the revised galactic neutron spectrum of the Ames collaborative study
Author(s): Schaefer, H. J.
Abstract: Energy distributions of the neutron dose equivalents in the 0.1 to 300 Mev interval for the Ames and Hess spectra are compared. The Ames spectrum shows no evaporation peak, moves the bulk of the flux away from the region of ...
NASA Center: NASA (non Center Specific)
Publication Year: 1980
Added to NTRS: 2008-06-30
Accession Number: 80N20002; Document ID: 19800011720; Report Number: NASA-CR-160554
Nuclear emulsion measurements of the astronauts' radiation exposure on the Apollo-Soyuz mission
Author(s): Schaefer, H. J.; Sullivan, J. J.
Abstract: On the Apollo-Soyuz mission each astronaut carried one passive dosimeter containing nuclear photographic emulsions, plastic foils, TLD chips, and neutron-activation foils for recording radiation exposure. This report is ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 76N31895; Document ID: 19760024807; Report Number: NAMRL-1228, NASA-CR-150916
A combined TLD/emulsion method of sampling dosimetry applied to Apollo missions
Author(s): Schaefer, H. J.
Abstract: A system which simplifies the complex monitoring methods used to measure the astronaut's radiation exposure in space is proposed. The excess dose equivalents of trapped protons and secondary neutrons, protons, and alpha ...
NASA Center: NASA (non Center Specific)
Publication Year: 1979
Added to NTRS: 2008-06-30
Accession Number: 80N11985; Document ID: 19800003735; Report Number: NASA-CR-160367
Nuclear emulsion measurements of the dose contribution from tissue disintegration stars on the Apollo-Soyuz mission
Author(s): Schaefer, H. J.
Abstract: A total of 996 disintegration stars were prong-counted in two 100 micron llford K.2 emulsions from the dosimeter of the Docking Pilot on Apollo-Soyuz. The change of slope of the distribution at a prong number of about 6 or 7 ...
NASA Center: Johnson Space Center
Publication Year: 1977
Added to NTRS: 2008-06-30
Accession Number: 77N24050; Document ID: 19770017106; Report Number: NASA-CR-151349, REPT-2
Unified range spectrum and LET distribution for HZE particles of galactic radiation in space
Author(s): Schaefer, H. J.
Abstract: A unified range spectrum for the flux densities of HZE particles of galactic radiation in space is presented for establishing the individual spectrum for any Z number with a simple scaling procedure. Data on Z abundances are ...
NASA Center: NASA (non Center Specific)
Publication Year: 1973
Added to NTRS: 2008-06-27
Accession Number: 74N26316; Document ID: 19740018203; Report Number: AD-775614, NAMRL-1198, NASA-CR-138464
Radiation monitoring with nuclear emulsions on Project Gemini. 3 - The flux of galactic heavy primaries on Gemini 7
Author(s): Schaefer, H. J.; Sullivan, J. J.
Abstract: Nuclear emulsion radiation detectors onboard Gemini spacecraft for measuring galactic heavy primaries
NASA Center: NASA (non Center Specific)
Publication Year: 1967
Added to NTRS: 2008-05-28
Accession Number: 68N11830; Document ID: 19680002362; Report Number: NAMI-1017, NASA-CR-90107
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