Re: today's best value for W in air

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>See "Re-evaluation of the W value for electrons in dry air" in Physics in
>Medicine & Biology (1987) Vol 32, No.2 pp. 213-219 by M. Boutillon and A.M.
>Perroche-Roux.
>
>They give the value as 33.97 +/- 0.05 J/C which is the latest value I have
>seen, the older value being 33.85 as found in ICRU 31 (1979).
>
>=========================
>Steve Locks
>Principal Physicist
>Regional Medical Physics Dept.
>Newcastle General Hospital
>Westgate Road
>Newcastle Upon Tyne NE4 6BE
>UK
>Tel: 0191 273 8811 Extn. 23144
>Fax: 0191 226 0970
>steve@rmpdrtp.demon.co.uk

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