OSO-7

Orbiting Solar Observatory-7

Orbiting Solar Observatory OSO-7

Solar X-ray Experiment

Soft X-ray Detector | Hard X-ray Detector | Particle Detectors | Electronics | Performance

Three solid state particle monitors were located on the UCSD Solar X-ray Experiment. Each solid state detector had its thickness and cover material selected in such a way as to give a differential proton channel and an integral electron channel. Although the highest energy detector failed two weeks after launch, the others provided useful information on particle fluxes in orbit.

The solid state particle counters were were sensitive to electrons in the range 0.1 to 75 MeV and to protons in the range 2.6 to 54 MeV.

Detector Solid State Detector 1 Solid State Detector 2 Solid State Detector 3
Effective Area 5 mm2 25 mm2 100 mm2
Thickness 0.3 mm 0.3 mm 0.5 mm
Solid Angle 0.51 sr (90 x 20 degrees) 6.28 sr (half sky) 6.28 (half sky)
Absorber 7.3 mg/cm2 Aluminum 134 mg/cm2 Aluminum 2.45 g/cm2 Aluminum
Energy Range electrons > 100 keV2.6 MeV < protons < 13.5 MeV electrons > 500 MeV9 MeV < protons < 21.5 MeV electrons > 5 MeV46 MeV < protons < 54 MeV

 

OSO-7 Information

Mission Objectives
Spacecraft
Cosmic X--ray Experiment
Solar X--ray Experiment
Results
Publication