[ RadSafe ] Fwd: RadSafe post from m.c.baehler at bluewin.ch

[Jeff Terry]

FYI

Begin forwarded message:

> From: radsafe-owner at health.phys.iit.edu
> Date: March 18, 2011 9:59:01 PM CDT
> To: radsafe-owner at health.phys.iit.edu
> Subject: RadSafe post from m.c.baehler at bluewin.ch 
> 
> From: marco bähler <m.c.baehler at bluewin.ch>
> Date: March 18, 2011 9:58:44 PM CDT
> To: "The International Radiation Protection (Health Physics) Mailing List" <radsafe at health.phys.iit.edu>
> Subject: Fwd: particle samplers
> 
> 
> dear radsafers ,
> 
>> I invite you to get perspex plates (from a quarter to one half square meter ) or something similar . make them warm with a potent hairdryer or something similar ( i do it in the baking oven). heat up vaseline ( a petroleum product) and draw it with a syringe when liquid. spread on perspex and distribute with large flat brush . for a quarter sq meter required about 5 to max 10 cc vaseline.
>> lay it out horizontally and secure against windforces.
>> this is an excellent particulate sampler. if you want to know about the residues, shave the vaseline off with a spatula and put it in your spectrometer leadcastle. you can also provide a contam monitor with little pointed feet (screws) of two or three millimeters, rest it on the exposed perspex and let it run in scaler mode. so you will eventually have an idea if there is something deposited beside of cosmic beryllium  (i can measure it easily).
>> good luck and enjoy sampling, I just come from reading that particules arrived in california.
>> marco
>> 
>> 
>> 
>> 
>> 
>> marco
> 
> let me know what you found!
> 
> 
>