[ RadSafe ] A long shot here ....

[Dan McCarn]

Well, perhaps it was that van de Graaff accelerator that I played with as a
kid...

Dan ii

Dan W McCarn, Geologist
108 Sherwood Blvd
Los Alamos, NM 87544-3425
+1-505-672-2014 (Home – New Mexico)
+1-505-670-8123 (Mobile - New Mexico)
HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

On Fri, Dec 18, 2015 at 1:30 PM, Joseph Preisig <jrpnj01 at gmail.com> wrote:

> McCarn,
>
>     HMMMM.  So, that's what happened to you, huh???
>
>     Joe Preisig
>
>
>
> On Fri, Dec 18, 2015 at 3:06 PM, Ted de Castro <tdc at xrayted.com> wrote:
>
> > Probably not - HV too low.  AND the tube is gas filled - NOT vacuum - so
> > the electrons would not impinge on the anode at full energy.
> >
> >
> > On 12/18/2015 11:52 AM, Dan McCarn wrote:
> >
> >> Dang!
> >>
> >> That would mean that my old 5kv at 0.5 amp power supply with a full-wave
> >> rectifier consisting of 4 mercury vapor tubes (that glowed so eerily)
> >> probably gave me a dose in my teens.
> >>
> >> Dan W McCarn
> >> 108 Sherwood Blvd
> >> Los Alamos, NM 87544 USA
> >> +1-505-670-8123
> >> Sent from my iPhone
> >>
> >> On Dec 18, 2015, at 12:44, Ted de Castro <tdc at xrayted.com> wrote:
> >>>
> >>> On page 164 of the 1970 Radiological Health Handbook is a very useful
> >>> graph entitled "Half-Value layers at Photon from 10 keV to 10 meV".
> >>>
> >>> I was looking into electronic ways to interpolate values from the graph
> >>> but found that the only twp pieces of software that would allow me to
> get
> >>> absolute pixel coordinates from the image are Photo Shop or MatLab - I
> have
> >>> neither and can't afford either.  (with the pixel coordinates of the 4
> >>> corners of the plot and the point of interest - a spreadsheet that
> would
> >>> return the value of the point of interest would be a trivial exercise).
> >>>
> >>> So - the question here is - does anyone have this plot in a better
> >>> quality electronic image, or has anyone worked out the data points from
> >>> which it was compiled or has anyone come up with or found an
> electronic way
> >>> to get this information?
> >>>
> >>> Thanks
> >>> _______________________________________________
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