THE EXTENSION OF THE RANGE OF NIM ALANINE ESR DOSIMETRIC SYSTEM TO THERAPY LEVEL/

The NIM alanine/ESR dosimetric system, which was designed for industri al radiation processing, has been improved to be suited for applicatio ns in therapy dose range. Two different procedures of dose intercompar isons between IAEA and NIM were carried out with the improved system i n the range of 2.5 to 100 Gy. In the first procedure, a set: of NIM al anine dosimeters were irradiated at IAEA dosimetric laboratory and par t of dosimeters marked ''for evaluated'' were evaluated using the rest of those with ''known dose'' given by IAEA. Most of evaluated doses a greed with IAEA doses within 1%. In the second procedure, all above do simeters were evaluated on the base of NIM dosimetry. The results indi cated that the doses determined by NIM agreed with those given by IAEA within 3% on the average. Copyright (C) 1996 Elsevier Science Ltd