Robin,
I understand the Doppler shift as wavelengths emitted from a moving
source compact or stretch relative to a stationary observer but am not
following why you say nuclei don't travel at relativistic speeds at energies of
a few MeV unless by definition they aren't Gamma rays anymore at lesser
electron volts? The lack of radiation in recent claims of transmutation has me
grasping for conditions whereby the radiation could be emitted inside a much
higher equivalent inertial frame and then lose its energy translating down to
our inertial frame such that we have no dead grad students. Again you are aware
of my premise that Casimir cavities create abrupt and enormous breaks in
isotropy - the changes in energy density provides equivalent acceleration where
the nuclei does not even need to be moving spatially.
Regards
Fran
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Friday, January 07, 2011 4:34 PM
To: [email protected]
Subject: EXTERNAL: Re: [Vo]:Would radiation from reactants at relativistic
speeds appear downshifted from our perspective?
In reply to Frank's message of Fri, 7 Jan 2011 08:06:32 -0500:
Hi,
[snip]
>What happens to Gamma radiation emitted from matter at relativistic speeds
>from our perspective? Is there a down translation to the EM frequency? Would
>it matter if the velocity was spatial or equivalent?
>
>Fran
It doesn't really matter, because gamma rays are emitted by nuclei, and these
don't travel at relativistic speeds, at energies of a few MeV.
(A 10 MeV proton would be traveling at about 15% of the speed of light, heavier
nuclei would be slower).
Furthermore, it depends on the direction of travel of the nucleus relative to
the observer. If toward the observer, then the frequency would be up shifted iso
down shifted.
Regards,
Robin van Spaandonk
http://rvanspaa.freehostia.com/Project.html
