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Automated Multi-Sample Ionization Chamber for Radioactivity Standards

Summary:

NIST radioactivity standards for gamma-ray emitting radionuclides are maintained as calibration factors for an automated ionization chamber.

Description:

This instrument has been developed at NIST to measure up to 100 samples with programmable sample queuing, sample handling and measurement parameters while maintaining the high precision and reproducibility of a similar manual instrument that has been used for over 30 years. Routine use of this new instrument results in reduced radiation exposure to operators, expedites the standards-transfer process and improves quality assurance. NIST has recently established calibration factors for the instrument for 131I, 18F, 124I and 201Tl, using NIST primary standardizations.



Image Description: Custom Sample-Holders and Positioning System Ensure High Degree of Reproducibility, Lead and Lead-glass Shielding for Safety and Effectiveness, Picoammeter Below Shielding.
Automated Multi Sample Ionization Chamber for Radioactivity Standards
Photograph by: Ryan Fitzgerald

Lead Organizational Unit:

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