Radiation dosimeters are devices used to measure exposure to ionizing radiation such as X-rays, alpha and beta particles, and gamma rays. The damage that this radiation can cause to a material (e.g., human tissue) is typically cumulative, related to the total ionizing dose received. Therefore, individuals who are exposed to ionizing radiation are usually required to carry a dosimeter. A variety of different dosimeters exist, including film badges, thermo-luminescent dosimeters, solid state devices and alanine dosimeters. However, these may require destructive testing, have limited measurement ranges, must be periodically calibrated and/or require expensive processing. Consequently, more than one device type may need to be used together.