Physics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nimpa.256..393r&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 256, Issue 2, p. 393-397.
Physics
5
Scientific paper
An experimental technique that permits the extraction of orbit-averaged, differential energy spectra of trapped radiation belt protons using simple passive detectors is described. An inversion technique is used for the data analysis. The basic principle of the described system is the measurement of the energy deposited in six thermoluminescent (TLD) detector assemblies behind various spherical absorbers. The technique has been applied to a detector assembly flown on four Shuttle flights. Although severe restraints were placed on the flight package, the differential energy spectra derived from these measurements are in good agreement with analytical results using a modified trapped proton environment model. The technique shows good promise for measuring the spectra in low inclination orbits where the flux of high energy galactic cosmic ray protons is small. Modifications to the detector assembly to improve the accuracy and to extend the range of the system to higher energies are suggested.
Atwell William
Badhwar Gautam D.
Cash Bernard
Richmond Robert G.
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