[ RadSafe ] geomagnetic effects on liberated electrons intissue/ was WHO: Cell phone use

[Busby, Chris]

-----Original Message-----
From: radsafe-bounces at agni.phys.iit.edu on behalf of Busby, Chris
Sent: Fri 6/3/2011 7:52 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] geomagnetic effects on liberated electrons intissue/ was WHO: Cell phone use
 



-----Original Message-----
From: radsafe-bounces at agni.phys.iit.edu on behalf of Clayton J Bradt
Sent: Fri 6/3/2011 7:16 PM
To: C.Busby at ulster.ac.uk; mcnaught at lanl.gov; radsafe at agni.phys.iit.edu
Subject: [ RadSafe ] geomagnetic effects on liberated electrons in tissue/ was WHO: Cell phone use
 
A 10 keV electron (v= 0.2c) travelling perpendicular to the earth's 
magnetic field would trace a circle of radius 6.7 meters. (The cyclotron 
frequency is independent of the velocity and is about 1.4MHz for an 
electron in the earth's field.) If the perpendicular component of the 10 
keV electron were only 10% of its total velocity the radius of the helical 
path would be about 7 centimeters. Compare this with the mean free path of 
this electron in tissue (water) which is about 20 nm. Any geomagnetic 
effect on the paths of electrons liberated by IR in tissue must be 
diminishingly small.


Clayton J. Bradt
Principal Radiophysicist

0.2c only when it sets off. What aboot when it loses energy and slows down. You guys are calculating in a vacuum.
Chris


NYS Dept. of Health

0.2c? But it has to slow down and stop.
C

Biggs Laboratory, Room D486A
Empire State Plaza
Albany, NY 12201-0509

518-474-1993

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