MEASUREMENT OF COSMIC RAY ALBEDO NEUTRON FLUX ABOVE THE ATMOSPHERE

Journal Article · Wed May 01 04:00:00 EDT 1963 · Journal of Geophysical Research (U.S.)

DOI:https://doi.org/10.1029/JZ068i009p02613· OSTI ID:4719332

Martin, J P; Witten, L; Katz, L

A pair of neutron counting systems was carried on a ballistic flight path on a pod flown pickaback on an Atlas rocket on December 19, 1961. One system detected the fast neutron flux, the other detected slow neutron density. Measurements of albedo neutrons were made between 480 and 1000-km altitude. The pod entered the trapped radiation belt in the vicinity of 1000 km altitude and 27 l north geomagnetic latitude. The albedo neutron results from both systems are consistent with the flux calculations of Hess, Canfield, and Lingenfelter. The flux measurements agree with the measurements of Hess and Starnes. Differences between the results of the density measurements and those made by Reidy, Haymes, and Korff can be adequately accounted for by the different experimental conditions under which the measurements were made. A lowaltitude increase in the density count rate suggests that some low-energy trapped protons are found beginning at a lower altitude than the higher-energy trapped protons. (auth)

• Research Organization: RIAS, Baltimore
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-024236
• OSTI ID: 4719332
• Journal Information: Journal of Geophysical Research (U.S.), Journal Name: Journal of Geophysical Research (U.S.) Vol. Vol: 68; ISSN JGREA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALBEDO
ATMOSPHERE
COSMIC RADIATION
EARTH
ENERGY RANGE
FAST NEUTRONS
LEVELS
MAGNETIC FIELDS
MEASURED VALUES
NEUTRON DETECTION
NEUTRONS
PHYSICS
PROTONS
RADIATION BELTS
REFLECTION
ROCKETS
THERMAL NEUTRONS