Dr. Carl Ross

Adjunct Research Professor
Ionizing Radiation Standards - Institute for National Measurement Standards
1200 Montreal Rd, National Research Council
Ottawa, ON K1A 0R6
(613)993-9352 Ext. 233
Carl [dot] rossatnrc-cnrc [dot] gc [dot] ca

Research Summary

The safe and effective use of ionizing radiation requires accurate methods for measuring the absorbed dose, which is defined as the energy absorbed per unit mass. My research focuses on the development and refinement of standards that can be used to measure the absorbed dose. We are developing a standard based on water calorimetry that will become the basis of a calibration service for Canadian cancer clinics that use radiation for cancer therapy.

I am also involved with measurements in the general areas of medical physics and radiation physics. This work has included measurements of the x-ray spectra produced by high energy electron beams, and measurements of electron stopping powers in various materials. Other collaborative work has included studies of the effect of radiation on cell survival, the effect of radiation quality on the response of thermoluminescent dosimeters and the characterization of various types of ion chambers.


  1. Ross, C.K., Klassen, N.V., McEwen, M.R. "The development and testing of an all-glass vessel for absorbed dose to water", 51st Annual Meeting of the Canadian Organization of Medical Physicists and the Canadian College of Physicists in Medicine : abstracts (Hamilton, Ontario, Canada, July 7-9, 2005), Medical Physics 32 (7), 2422 (July 2005).
  2. Stewart, K.J., Klassen, N.V., Ross, C.K., Seuntjens, J.P. "Development of a sealed water calorimeter for clinical electron beams", American Association of Physicists in Medicine 47th Annual Meeting : abstracts (Seattle, Washington, USA, July 24-28, 2005), Medical Physics 32 (6), 2137-2138 (June 2005).
  3. Medin, J., Ross, C.K., Stucki, G., Klassen, N.V., Seuntjens, J.P. "Commissioning of an NRC-type sealed water calorimeter at METAS using 60Co gamma-rays", Physics in Medicine and Biology 49 (17), 4073-4086 (2004).