Re-evaluation of correction factors of a primary standard graphite calorimeter in 60Co gamma ray beams as a basis for the appointment of the BEV absorbed dose rate to water reference value

2010 ◽  
Vol 145 (1) ◽  
pp. 3-12 ◽  
Author(s):  
A. Baumgartner ◽  
A. Steurer ◽  
W. Tiefenbock ◽  
F. Gabris ◽  
F. J. Maringer ◽  
...  
Keyword(s):  
Dose Rate ◽  
Gamma Ray ◽  
Primary Standard ◽  
Absorbed Dose ◽  
Reference Value ◽  
Correction Factors ◽  
Absorbed Dose Rate ◽  
60Co Gamma

RE-EVALUATION OF THE AIR KERMA PRIMARY STANDARD OF THE SMU IN 60Co AND 137Cs GAMMA RAY BEAMS

2019 ◽  
Vol 186 (2-3) ◽  
pp. 235-238
Author(s):  
Norman Durný
Keyword(s):  
Gamma Ray ◽  
Primary Standard ◽  
National Standard ◽  
Key Comparisons ◽  
Main Role ◽  
Correction Factors ◽  
Active Volume ◽  
Air Kerma ◽  
60Co Gamma

Abstract The primary standard for air kerma of the Slovak Institute of Metrology (SMU) as a part of national standard of dosimetric quantities of gamma radiation NE028/02, based on cylindrical graphite walled cavity ionization chamber was established in 2002 for the 60Co gamma ray beams. Since then the main role of SMU was to continuously maintain, develop and refurbish the standard with related accessory to ensure international equivalence. Since 2002, a re-evaluation of the active volume of the ionizing chamber, correction factors, the key data, due to adoption of ICRU Report 90(1), and changes of the calibrations methods and corrections of the equipment were made to obtain improved parameters. The range was extended for 137Cs gamma ray beams and key comparisons with the Bureau International des Poids et Mesures (BIPM) were performed. ICRU Report 90(1) implementation led to a decrease of the Gray of −0.84% for 60Co and −0.80% for 137Cs.

scholarly journals Airborne gamma ray spectrometry compilation, natural air absorbed dose rate, radioactivity map of Canada

2005 ◽  
Author(s):  
J M Carson ◽  
P B Holman ◽  
K L Ford ◽  
J A Grant ◽  
R B K Shives
Keyword(s):  
Dose Rate ◽  
Gamma Ray ◽  
Absorbed Dose ◽  
Gamma Ray Spectrometry ◽  
Absorbed Dose Rate

scholarly journals Airborne gamma ray spectrometry compilation, natural air absorbed dose rate, Nova Scotia, Nova Scotia

2003 ◽  
Author(s):  
J M Carson ◽  
P B Holman ◽  
K L Ford ◽  
J A Grant ◽  
R B K Shives
Keyword(s):  
Nova Scotia ◽  
Dose Rate ◽  
Gamma Ray ◽  
Absorbed Dose ◽  
Gamma Ray Spectrometry ◽  
Absorbed Dose Rate
Sign in / Sign up

Export Citation Format

Share Document