IONIZATION SPECTROMETER

The instrument consisted of three major components a charge measuring module, a spark chamber for determining particle trajectories, and a ionization spectrometer for measuring total energy.

Balloon launched on: 11/11/1970
Launch site: Holloman Air Force Base, Alamogordo, New Mexico, US  
Balloon launched by: Air Force Cambridge Research Laboratories (AFCRL)
Balloon manufacturer/size/composition: Zero Pressure Balloon Mylar Scrim 26.000.000 cuft
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 14 h 25 m
Payload weight: 6000 pounds

In this flight measurements of the differential energy spectra of the heavy nuclei of the galactic cosmic radiation were acomplished.

• Measurement of the Primary Cosmic electron Spectrum from 10-GeV to About 250-GeV NASA Goddard Space Flight Center; Greenbelt, MD, United States (1975)
• Results on the energy dependence of cosmic-ray charge composition Astrophysical Journal, Vol. 186, pp. 109
• The eventful flight of a Goddard balloon Goddard News Vol. 18 Nº 9, December 14, 1970, pag. 9
• The Shape of the Primary Cosmic Ray Electron Spectrum Above 10 GeV 13th International Conference on Cosmic Rays, Denver, Colorado, Volume 1., p.347
• Variations of the Carbon+Oxygen to Iron and the Primary to Secondary Ratios with Energy from 2 to 50 GeV/Nucleon 13th International Conference on Cosmic Rays, Volume 1, p.157