Characteristics and verification of a car-borne survey system for dose rates in air: KURAMA-II.
J Environ Radioact
; 139: 260-265, 2015 Jan.
Article
in En
| MEDLINE
| ID: mdl-24698118
ABSTRACT
The car-borne survey system KURAMA-II, developed by the Kyoto University Research Reactor Institute, has been used for air dose rate mapping after the Fukushima Dai-ichi Nuclear Power Plant accident. KURAMA-II consists of a CsI(Tl) scintillation detector, a GPS device, and a control device for data processing. The dose rates monitored by KURAMA-II are based on the G(E) function (spectrum-dose conversion operator), which can precisely calculate dose rates from measured pulse-height distribution even if the energy spectrum changes significantly. The characteristics of KURAMA-II have been investigated with particular consideration to the reliability of the calculated G(E) function, dose rate dependence, statistical fluctuation, angular dependence, and energy dependence. The results indicate that 100 units of KURAMA-II systems have acceptable quality for mass monitoring of dose rates in the environment.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radioactive Fallout
/
Radioisotopes
/
Radiation Monitoring
/
Air Pollutants, Radioactive
/
Fukushima Nuclear Accident
Country/Region as subject:
Asia
Language:
En
Journal:
J Environ Radioact
Journal subject:
SAUDE AMBIENTAL
Year:
2015
Document type:
Article