[ RadSafe ] 10 rem from lightning terms

[Luke McCormick]

Weare using 9  MeV x-rays.

Luke McCormick


 
> Date: Thu, 25 Mar 2010 07:05:34 -0800
> From: joel.baumbaugh at navy.mil
> CC: radsafe at agni.phys.iit.edu
> Subject: [ RadSafe ] 10 rem from lightning terms
> 
> Radsafers,
> 
> Just for grins, lets take a quick look at the terms we're using.
> 
> A quick review:
> Gamma Rays: http://en.wikipedia.org/wiki/Gamma_ray
> x-rays: http://en.wikipedia.org/wiki/X-ray Yes, lets take a quick look
> at the definitions again...
> 
> 
> We say (myself included) "Gamma-ray" bursts.
> http://en.wikipedia.org/wiki/Gamma-ray_burst Shouldn't they be bursts
> of x-rays?
> 
> Often when I look at charts of the electromagnetic spectrum I see
> specific energy ranges given for x-rays and then they have gamma-ray
> energies extending out at higher energies than any x-ray photons, when
> x-rays (or "cosmic rays - another misnomer) from, for example black-hole
> accretion disk emissions or Supernovas, are MANY orders of magnitude
> more energetic than the gamma-energy produced by any nucleus of any
> element known to man. Here's an EM Spectrum chart example showing x and
> gamma radiation energies:
> http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
> 
> I know that 50+ years ago we didn't have very good accelerators (to
> produce high energy x-rays) and high-energy astrophysics/astronomy was
> in its infancy. 
> 
> Is it time to update some of our graphics or should we all just keep on
> sleeping?
> 
> Or, am I have a brain-fart here (should I have more coffee and wake
> myself up)? And, does it really matter? (grin)...
> 
> Ok, back to work... sigh...
> 
> 
> Joel Baumbaugh
> SSC-Pacific
> Sunny San Diego...
> 
> 
> 
> 
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