RE: Efficiency for detection of Tc-99m

["Quinn, Bernard" <Bernard_Quinn@URMC.Rochester.edu>]

I have determined a detection efficiency of 0.9% for Tc99m using a pancake
detector

-----Original Message-----
From: Jacobus, John (OD) [mailto:JJacobus@exchange.nih.gov]
Sent: Friday, January 21, 2000 9:44 AM
To: Multiple recipients of list
Subject: Efficiency for detection of Tc-99m


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

-- John 

John Jacobus, MS
Health Physicist
National Institutes of Health
Radiation Safety Branch, Building 21
21 Wilson Drive, MSC 6780
Bethesda, MD  20892-6780
Phone: 301-496-5774      Fax: 301-496-3544
jjacobus@exchange.nih.gov (W)
jenday@ix.netcom.com (H)
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