1995 Volume 44 Issue 4 Pages 236-243
Using the strongest permanent magnet (NEOMAX), a high-sensitive portable ESR spectrometer useful for practical measurements has been developed. The spectrometer is assembled in one small case with the weight of about 25 kg and is operated by a personal computer. The spectrometer reaches a sensitivity of 2×1010 spins/0.1 mT with a resolving power below 0.045 mT. This spectrometer can be utilized for practical measurements and fundamental researches. An important field of practical measurements is the dosimetry of gamma radiations. The spectrometer is also to characterize the alanine samples irradiated from 10 Gy to 30 kGy with an accuracy of scattering lower than 2%.