Re: Efficiency for detection of Tc-99m

[LRGreger@aol.com]

I worked a bit on this issue with Victor Anderson about 6 months ago for the 
State of California.  We came up with a slightly conservative efficiency of 
1% at a distance of 1 cm from a spiked 47mm filter in a plastic holder.

Rob Greger

In a message dated 01/21/2000 6:41:53 AM Pacific Standard Time, 
JJacobus@exchange.nih.gov writes:

<< Can anyone give me a reasonable detection efficiency for measuring Tc-99m
 surface contamination using a GM pancake type probe?
  >>
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