Comparison of pMOSFET total dose response for Co-60 gammas and high-energy protons
The ionizing radiation response of pMOSFETs used as dosimeters (RADFETs) is compared for Co-60 gammas and high-energy protons. For comparable Co-60 and proton doses, RADFET response for high-energy protons (60-200 MeV) was found to be only 65-85% of their Co-60 response. This difference is not fully understood but is shown to be partially a result of increased columnar recombination in SiO2 for high-energy proton irradiation.
Pease, RL., Simons, M., & Marshall, P. (2001). Comparison of pMOSFET total dose response for Co-60 gammas and high-energy protons. IEEE Transactions on Nuclear Science, 48(3, Part 3), 908-912. DOI: 10.1109/23.940131