To improve the operability in the case of measuring by taking out the sampler monitoring material to transfer the same to the general-purpose glass column of the test tube, and to make it possible to measure the integrated radiation doses by repeatedly using the monitoring material, at the time of monitoring the iodine in the atomic facility etc.

A sheet mainly constituted of an active carbon fiber whose thickness is ≤4 mm, bending resistance is ≤0.2 Ncm, and loop repulsion rate of the sheet is ≥25% is used as the monitoring material. Therefore, the radiation doses are measured by putting it into a test tube of 6-30 mm internal diameter, and the integrated radiation doses can be measured by repeatedly using it.

COPYRIGHT: (C)2006,JPO&NCIPI