**5. Summary**

134 Environmental Monitoring

GD-450 DIS

Fig. 18. Dose response at each point in Ishikawa prefecture (A: Tsurugi-machi, B:

Fig. 19. Dose response at each point in Ishikawa prefecture (A: Tsurugi-machi, B:

A B C D E F G

are represented by mSv and mGy, respectively.

0

0.02

0

0.02

0.04

0.06

m

S

v

0.08

0.1

0.12

0.04

0.06

m

S

v

0.08

0.1

0.12

Tatsunokuchi, C: Inside of house of Mt. Shishiku, D: Outside of Mt. shishiku, E: Inside of Ogoya Mines, F: Outside of Ogoya Mines, G: Public health and Environmental Science) using GD-450 (blue bars) or SC-1 (green line) dosimeters. The unit of the GD-45 and SC-1

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09

m

G

y

GD-450 SC-1

Tatsunokuchi, C: Inside of house of Mt. Shishiku, D: Outside of Mt. shishiku, E: Inside of Ogoya Mines, F: Outside of Ogoya Mines, G: Public health and Environmental Science) using GD-450 (blue bars) or DIS (purple bars) dosimeters. There is no data at G for DIS.

A B C D E F G

Environmental natural background radiation dose values at 7 points in Ishikawa prefecture determined using the personal glass dosimeter, type GD-450 were compared with these determined some other personal dosimeters such as DIS dosimeter utilizing a MOSFET with an ioniization chamber and OSL dosimeter, Luxel budge, utilizing OSL phenomenon in Al2O3:C phosphor. The actual dose values were different from each other, however, the tendency of each dose at each point were very similar. It can be said that the personal glass dosimeter will be very useful for not only monitoring personal dose but also monitoring natural background radiation dose.
