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256 channels alpha particles amount of interstellar analyzed and sorted CHARGE AND MASS charged particle combination of scintillators cosmic ray balloon cosmic rays pass counter telescope described D-1757 National Aeronautics D. A. Bryant dE/dx scintillator detect heavy particles detector are presented digitally into 256 earth7s vicinity employing the scintillation energy is sufficient energy loss dE/dx experiment employing G. H. Ludwig helium nuclei hydrogen and helium IDENTIFICATION OF PRIMARY interstellar material low to pass major objectives MASS IDENTIFICATION method is sensitive modulation mecha NASA NASA TN NASA TECHNICAL NOTE nism of hydrogen OTS price particles whose energy penetrate the dE/dx photomultiplier PRIMARY COSMIC RAYS protons and alpha ranges of sensitivity rate of energy ray balloon flights required to detect rigidity dependence satellite applications SCINTILLATION COUNTER TELESCOPE scintillators Csl crystals sensitive to particles series of cosmic solar minimum sorted digitally sufficient to penetrate TECHNICAL NOTE D-1757 TELESCOPE FOR CHARGE TN D-1757 National