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A Cerenkov - Delta E/Delta X experiment for measuring cosmic-ray isotopes from neon through ironCosmic-ray isotope masses are measured in a balloon-borne cosmic-ray experiment. Two Cerenkov counters and an NaI scintillator stack are used to determine changes in energy and in the Lorentz factor for a traversing or stopping particle. The mass is defined at the ratio of the change in energy to the change in the Lorentz factor. For incident elements from neon through iron, mass resolution better than 0.3 a.m.u. is expected, with incident Lorentz gammas ranging from 2.4 to 3.1, depending on the element. The mass resolution is approximately 0.2 a.m.u., measured for Mn-55 ions having an incident Lorentz factor of 2.75.
Document ID
19840041296
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Buffington, A.
(California Inst. of Tech. Pasadena, CA, United States)
Lau, K.
(California Inst. of Tech. Pasadena, CA, United States)
Schindler, S. M.
(California Inst. of Tech. Pasadena, CA, United States)
Stone, E. C.
(California Institute of Technology Pasadena, CA, United States)
Laursen, S.
(California Inst. of Tech. Pasadena, CA, United States)
Rasmussen, I. L.
(Dansk Rumforskningsinstitut Lyngby, Denmark)
Date Acquired
August 12, 2013
Publication Date
August 1, 1983
Subject Category
Space Radiation
Accession Number
84A24083
Funding Number(s)
CONTRACT_GRANT: NGR-05-002-160
Distribution Limits
Public
Copyright
Other

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