RE: RADSAFE digest 2615

["McDonald, Michael P" <mpmcdon@sandia.gov>]

A copy of the tech manual for the Fidler identifies it as a low-energy (17
and 60 keV) photon detector associated with plutonium and americium.  It
also indicates that the face is made of beryllium and is extremely fragile.

Michael McDonald, CHP, RRPT
Sandia National Laboratories
mpmcdon@sandia.gov
505-844-0653

-----Original Message-----
From: Ralph & Frances Shuping [mailto:shuping@erols.com]
Sent: Wednesday, September 01, 1999 9:17 PM
To: Multiple recipients of list
Subject: Re: RADSAFE digest 2615


A FIDLER (Field Instrument for Detection of Low Energy Radiation) is a meter
developed around 1965 or so by DOE or DOD for detecting activity in the
environment from Broken Arrow incidents.  I believe it was manufactured by
Eberline for the agency and had a thin NaI xtal mounted to the window of a
6" PM tube.  A single channel analyzer mounted in a portable hand carried
meter was the readout. The meter operated in count mode.  It was designed to
detect an x-ray of about 100 kev emitted from Pu which was present at these
sites.   I once had a collection of material on this meter but unfortunatley
it went away many moves ago.  Does this jog someone's memory of  this really
neat survey meter.
Ralph Shuping


>------------------------------
>
>Date: Wed, 01 Sep 1999 23:38:10 +0200
>From: Franz Schoenhofer <schoenho@via.at>
>To: radsafe@romulus.ehs.uiuc.edu
>Subject: Re: FIDLERs and Hot Particles
>Message-ID: <3.0.5.32.19990901233810.008628d0@pop3.via.at>
>
>At 16:33 01.09.1999 -0500, you wrote:
>>My name is Craig Marianno and I am in the middle of my literature review
>>for my Ph.D. in RHP at Oregon State University.  My research mainly
>>revolves around FIDLERs and transuranic "hot particle" detection in the
>>environment.  Unfortunately, articles on these two topics are difficult to
>>locate and I believe much of the research in this area was completed
>>around the 60s.  I was wondering if anyone may know of any
>>articles/ grey papers out there on these subjects.  Any help would be
>>welcome.
>>
>
>I actually do not know what a FIDLER is, but we have worked during our
>sampling and measurement campaign on the Mururoa atoll with detection of
>hot particles (Am-241 associated with plutonium).
>
>If this is what you are interested in, please contact me at my private
>e-mail address and I can give you the source, where you can find details.
>
>Best regards,
>
>Franz
>
>
>Franz Schoenhofer
>Habicherg. 31/7
>A-1160 Vienna
>Austria
>Tel.: +43-1-495 53 08
>Fax.: same number
>mobile phone: +43-664-338 0 333
>e-mail: schoenho@via.at
>
>Office:
>Hofrat Dr. Franz Schönhofer
>Federal Institute for Food Control and Research
>Department of Radiochemistry
>Kinderspitalg. 15
>A-1095 Vienna
>Austria
>Tel.: +43-1-40 490 27820
>e-mail: schoenhofer@baluf.via.at
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>------------------------------
>
>End of RADSAFE Digest 2615
>**************************


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