The ratio method applied in personal thermo-luminescence dosemeters

The personal thermo-luminescence dosemeters usually used at present are not capable of distinguishing the energy of radiation, which may cause much error when they are used in some mixed fields, complicated radiation fields and energy unknown workplace. So a kind of personal dosemeter that has capability of distinguishing energy is designed and built. It's energy response is calculated by MCNP program. Then it has been tested in reference fields and compared nationally. The kind of personal dosemeter can promote the quality of dose monitor by being tested and compared. This well designed dosemeter could distinguish energy of photon, which has good potential in personal dose monitor of some mixed fields, complicated radiation fields and energy unknown workplace. (authors)