Computer Science
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phdt.........5d&link_type=abstract
Thesis (PHD). WASHINGTON UNIVERSITY , Source DAI-B 58/04, p. 1923, Oct 1997, 194 pages.
Computer Science
Cosmic Rays
Scientific paper
A new measurement of cosmic ray positrons and electrons in the energy range between 4.5-50.0 GeV was made with the High Energy Antimatter Telescope (HEAT) experiment May 3-5, 1994. The HEAT experiment employs a superconducting magnet spectrometer, a transisiton radiation detector, a time-of-flight detector and an electromagnetic calorimeter. Negatively charged particles are distinguished from positively charged particles with the superconducting magnet spectrometer. A high degree of background rejection (>105) is possible with the combination of the transition radiation detector and the electromagnetic calorimeter. Electrons and positrons have a unique propagation history, distinct from the more abundant nuclear component of cosmic rays, making it possible to better constrain existing propagation models. This thesis presents the measurement, analysis, and results of the absolute electron and positron fluxes as well as the positron fraction, e+/e++e-, between 4.5-50.0 GeV.
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