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Ariel 6 measurements of ultra-heavy cosmic ray fluxes in the region 34 or = Z or = 48The Ariel VI satellite was launched by NASA on a Scout rocket on 3rd June 1979 from Wallops Island, Virginia, USA, into a near circular 625 km orbit inclined at 55 deg. It carried a spherical cosmic ray detector designed by a group from Bristol University. A spherical aluminum vessel of diameter 75 cm contains a gas scintillation mixture and a thin spherical shell of Pilot 425 plastic, and forms a single optical cavity viewed by 16 photomultipliers. Particle tracks through the detector may be characterized by their impact parameter p and by whether or not they pass through the cup of plastic scintillator placed between the sphere and the spacecraft body (referred to below as the Anti-Coincidence Detector or ACD). Individual particle charges are determined by separately measuring the gas scintillation and the Cerenkov emission from the plastic shell. This is possible because of the quite different distribution in time of these emissions.
Document ID
Document Type
Conference Paper
Fowler, P. H.
(Bristol Univ.)
Masheder, M. R. W.
(Bristol Univ.)
Moses, R. T.
(Bristol Univ.)
Walker, R. N. F.
(Bristol Univ.)
Worley, A.
(Bristol Univ.)
Gay, A. M.
(Bristol Univ.)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: 19th Intern. Cosmic Ray Conf - Vol. 2
Subject Category
Space Radiation
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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