Engineering topics

Orth, C. D.

Publications and source records attributed to Orth, C. D..

20 records · Page 2

NASA NTRS1974

Measurement of separate electron and positron spectra in the primary cosmic rays from 5 to 50 GeV

A magnetic spectrometer and lead-plate spark chamber have been used to measure separate primary cosmic-ray electrons and positrons up to 50 GeV. Separation of these particles from the background was accomplished with a new technique combining both selective trigger and observation, in the lead-plate chamber, of bremsstrahlung photons that were created in a thin radiator placed above the spectrometer. The results of efficiency and rejection calibrations with accelerator tests and Monte Carlo calculations are presented, as well as preliminary data from a balloon-flight exposure of the apparatus.

Buffington, A.↗

NASA NTRS1974

Alternative explanations for the observations of unknown heavy-mass particles in cosmic-ray showers

Several experiments were conducted in the 1960s in search of unknown heavy-mass strongly interacting particles in cosmic rays using an experimental technique suggested by B. Peters et al. (1965). The experiments looked for particles which are delayed more than 20 nanoseconds behind the front of EAS and deposit more than 20 GeV in a calorimeter. None of the experimental results demand the existence of such particles. All observations can be interpreted as due either to incident nuclei or to inaccurate estimates of the systematics with energy determination using calorimeters.

Orth, C. D.↗