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At one time before NIST supplied Mo-99, Co-57 was used to calibrate Ion Chambers for the Mo-99.
Edmond J. Baratta Radiation Safety Officer Tel. No. 781-729-5700, ext 728 FAX: 781-729-3593
-----Original Message-----
With the proliferation of portable spectroscopy devices to first responders it becomes very important that they become properly trained. Recently there was an incident where the portable spectroscopy device reported a high level of Co-57. It turned out that the package was a typical, well shielded, 5 Ci Mo-99 generator. The spectrometer was interpreting the Mo-99 Compton's as Co-57.
Roy A. Parker, Ph.D. |