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Jeffrey T. Cessna (Fed)

Jeffrey T. Cessna is a Physicist in the Radioactivity Group at the National Institute of Standards and Technology (NIST). He joined the group in 1988 (then NBS) working in the area of Calibration Services, Standard Reference Material Production, and Measurement Assurance Programs. He has published over 60 peer-reviewed research papers. He has received A Measurement Services award, the William P. Slichter Award, and an NIST Bronze Medal award.

His current research includes primary measurements of the activity of radionuclides used in Nuclear Medicine, establishment of secondary standards and guidance for the community on how to access these standards, activity measurements by ionization chamber, and liquid scintillation counting.

He is the Coordinator of the Life Sciences Working Group of the International Committee on Radionuclide Metrology (ICRM). The purpose of the Working Group is to provide a forum for ICRM members to address radionuclide metrology issues as they relate to the life sciences. Issues may include, but are not limited to: development of methodologies to calibrate short-lived radionuclides of interest in nuclear medicine, measurement of decay properties (half-lives, decay energies and probabilities, etc.) of radionuclides used in nuclear medicine and biological research, development of measurement methodologies for transferring National Measurement Standards to the clinic and research laboratory, and development of methods to perform radioactivity assays of brachytherapy sources.

Projects & Collaborations


Primary standardization of 212Pb activity by liquid scintillation counting

Denis E. Bergeron, Jeffrey T. Cessna, Ryan P. Fitzgerald, Lizbeth Laureano-Perez, Leticia Pibida, Brian E. Zimmerman
An activity standard for 212Pb in equilibrium with its progeny was realized, based on triple-to-double coincidence ratio (TDCR) liquid scintillation (LS)

Ohms Law Low-current Calibration System for Ionization Chambers

Dean G. Jarrett, Shamith U. Payagala, Ryan P. Fitzgerald, Denis E. Bergeron, Jeffrey T. Cessna, Charles J. Waduwarage Perera, Neil M. Zimmerman
A system for the calibration of electrometers that measure currents from ionization chambers is described. The calibration system uses a 1 GΩ standard resistor
Created October 3, 2019, Updated December 8, 2022