Co-60 Gamma Total Dose Testing

Co-60 Gamma Total Dose Testing (TID) Facility

We offer our Co-60 Gamma Irradiation facilities for radiation testing of electronic, opto-electronis and optical components. We not only offer beam time, but the whole test process from design, development, measurement to analysis and reporting based on decades of experience.

Dosimetry is traceable to national standards.

We can hold the samples at defined temperatures between -260°C and +250°C during irradiation, which can be done in air, vacuum or other gases.

Technical details

  • Three Co-60 gamma irradiation facilities
  • Point geometry
  • Dose rates range from 10 μGy/s up to 2 Gy/s
  • Dedicated facility for low dose rate irradiations
  • Irradiations in the temperature range from -250 °C up to +150 °C
  • Dosimetry with calibrated ionization chambers and TLDs traceable to national standards
  • Option to perform in-situ/online measurements  


Co-60 decays to Ni-60 via beta-decay with a half-life of 5.3 years. The excited Ni-60 nuclei decay to their ground state by emission of energetic gamma radiation with energies of 1.172 MeV and 1.332 MeV. As gamma radiation is highly penetrating, samples are irradiated fully and sample holders made of light materials (materials with low atomic numbers) have little effect on attenuating the radiation.

The radiation field is point-like and the homogeneity achievable during an irradiation therefor depends on the dimensions of the objects and the required or intended dose rate (Figure 6). With the irradiation facilities at INT, the dose rate ranges of all international standards are covered.

The dosimetry is determined regularly with calibrated dosimeters and ionization chambers manufactured by IBA and PTW and traced to national standards.

Features radiation:
Heavy ion
Specimen length [mm]: 1000.0
Specimen width/dia [mm]: 1000.0
Specimen height/thk [mm]: 1000.0
Mass max. [kg]: 100.0
Data acquisition: Environment: Doserate, Temperature, Humidity, Air pressure; Electrical: Current, Voltage, Resitance, Transient signals; Optical: Power, Wavelength
Energy [MeV]: 1.25
Dose rate: 1 mrad/s to 100 rad/s
Project heritage: Hundreds of projects for space agencies, integrators, manufacturers, users (Example missions: Sentinel 4, Exomars, JUICE, LCT, Merlin, Heinrich-Hertz, Lisa Pathfinder, Lisa, EnMAP, UWE, BepiColombo, Europa Clipper, Biomass, ATV, MSG, EUCLID, GALILEO)
ISO/IEC 17025
ISO 9001
Keywords: radiation testing; radiation effects, gamma CO-60 TID testing, total dose