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Group Leader, Ionizing Radiation Standards
NRC Institute for National Measurement Standards
1200 Montreal Road
Building M-35,
Room X-26
Ottawa, Ontario K1A 0R6
Phone: 613-993-9352x233, Fax: 613-952-9865
Email: Carl.Ross@nrc-cnrc.gc.ca
Academic Qualifications: Ph.D.
Spoken Languages: English
Expertise
Radiation standards for air kerma; radiation standards for absorbed dose; experimental radiation physics.
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 which 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 which 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.
Keywords
- Air kerma
- Co and Cs sources
- Ionization chamber
- Water calorimetry
- Experimental radiation physics
- Radiation standards
- Absorbed dose
- X-ray spectrum measurements
- Thermoluminescent dosimeter measurements
- Medical dosimetry
- Electron stopping powers
