Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV

Details Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV

Jul 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974phrvl..33...34b&link_type=abstract

Physical Review Letters, vol. 33, Issue 1, pp. 34-37

Physics

11

Scientific paper

We report the first measurement of primary-cosmic-ray positrons above 5 GeV. Both e+ and e- fluxes were measured, using a balloon-borne magnetic spectrometer. Background was suppressed using a new technique which combines both selective trigger and identification of bremsstrahlung photons created by e+/- upon entering the instrument. If no positrons originate at cosmic-ray sources, our observed ratio e+(e++e-)=0.08+/-0.02 requires source protons to traverse 3.5+/-1.5 g/cm2 of interstellar material.

Affiliated with

Also associated with

No associations

Rating

Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the Positron-Electron Ratio in the Primary Cosmic Rays from 5 to 50 GeV will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1759850