Jump to content

User:Ytrottier/sandbox

From Wikipedia, the free encyclopedia

< User:Ytrottier

Radiation weighting factors W_R (formerly termed Q factor)
used to represent relative biological effectiveness
according to ICRP report 103^[1]
Radiation	Energy	W_R (formerly Q)
Radiation	Energy	1949	1991	2003	2007
alpha rays, Nuclear fission products, heavy nuclei		20	20	20	20
x-rays, gamma rays, beta rays,^{[note 1]} muons		1^{[note 2]}	1	1	1
neutrons	< 1 MeV				2.5 + 18.2·e^-[ln(E)]²/6
	1 MeV - 50 MeV				5.0 + 17.0·e^{-[ln(2·E)]²/6}
	> 50 MeV				2.5 + 3.25·e^{-[ln(0.04·E)]²/6}
protons, charged pions		10	5^{[note 3]}	2	2

^ except auger electrons
^ 1.5 for 200 keV x-ray on skin
^ except recoil protons, >2 Mev

^ "The 2007 Recommendations of the International Commission on Radiological Protection". Annals of the ICRP. ICRP publication 103. 37 (2–4). 2007. ISBN 978-0-7020-3048-2. Retrieved 17 May 2012.

Retrieved from "https://en.wikipedia.org/w/index.php?title=User:Ytrottier/sandbox&oldid=524433780"