[ RadSafe ] Any experience in detection of polonium on largescale contamination ?
parthasarathy k s
ksparth at yahoo.co.uk
Mon Dec 11 23:11:29 CST 2006
----- Original Message ----
From: stewart farber <radproject at sbcglobal.net>
To: radsafe at radlab.nl; parthasarathy k s <ksparth at yahoo.co.uk>; John Andrews <andrewsjp at chartertn.net>
Sent: Tuesday, 12 December, 2006 10:39:26 AM
Subject: Re: [ RadSafe ] Any experience in detection of polonium on largescale contamination ?
Several useful Ludlum large area detectors for measuring alpha contamination
that would be useful for polonium detection include the 43-5 alpha probe [50
cm² Alpha Scintillator] and the Ludlum 43-68 dual gas proportional probe
[100 cm² open area].
Both of these probes, delivered with a warranty, are available for sale on
eBay at about one-half list. For information, see:
Ludlum 44-68 probe:
Ludlum 43-5 probe:
Farber Technical Services
1285 Wood Ave.
Bridgeport, CT 06604
 367-0791 [office]
 522-2817 [cell]
email: radproject at sbcglobal.net
----- Original Message -----
From: "John Andrews" <andrewsjp at chartertn.net>
To: "parthasarathy k s" <ksparth at yahoo.co.uk>; <radsafe at radlab.nl>
Cc: <ludlum at ludlums.com>
Sent: Monday, December 11, 2006 9:45 PM
Subject: Re: [ RadSafe ] Any experience in detection of polonium on
largescale contamination ?
> parthasarathy k s wrote:
>> Detection of polonium contamination by area monitoring has certain
>> difficulties. Since the range of alpha particle from Po-210 is only a few
>> cm in air and the gamma emision accompanying Po decay is very feeble, how
>> do you carry out large scale area monitoring?
>> The infamous polonium poisoning incident is worrying for those who have
>> to carry out area minitoring in case some rogue elements try to spray it
>> in busy malls, shoping centres etc.
> Large area gas flow counters are available from Ludlum Measurements
> (www.ludlums.com). here is a snip from their web page. I have used many of
> their products over the years. I do not work for or represent Ludlum.
> *LUDLUM MEASUREMENTS, INC.*
> John Andrews, Knoxville, Tennessee
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