[ RadSafe ] A long shot here ....

[Ted de Castro]

shocking!

On 12/18/2015 11:01 PM, Dan McCarn wrote:
> 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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