Question 1: What primary-standard instrument is used to realize air kerma from kV x-ray beams?
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Reference: | Burns, D. T., and Büermann, L. (2009). “Free-air ionization chambers,” Metrologia 46, S9–S23.
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Choice A: | Geiger counter. |
Choice B: | Graphite-walled cavity chamber. |
Choice C: | Free-air chamber. |
Choice D: | Farmer Chamber. |
Question 2: What primary-standard instrument is used to realize air kerma from, e.g., 60Co gamma-ray beams? |
Reference: | Büermann, L., and Burns, D. T. (2009). “Air-kerma cavity standards,” Metrologia 46, S24–S28.
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Choice A: | Geiger counter |
Choice B: | Graphite-walled cavity chamber |
Choice C: | Free-air chamber |
Choice D: | Farmer Chamber |
Question 3: What is the primary non-trivial quantity in Bethe theory of charged-particle electronic (collision) stopping power? |
Reference: | ICRU Report 37 (1984). Stopping Powers for Electrons and Positrons. |
Choice A: | Mean excitation energy of the medium |
Choice B: | Particle velocity |
Choice C: | Density of the medium |
Choice D: | Bloch correction |
Question 4: What is the magnitude of changes in national measurement standards for 60Co air kerma due to recommendations in new ICRU Report?
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Reference: | ICRU Report (in press). Key Data for Ionizing-Radiation Dosimetry: Measurement Standards and Applications. |
Choice A: | > 10 % |
Choice B: | 2 % to 5 % |
Choice C: | 1 % to 2 % |
Choice D: | 0.5 % to 0.7 % |
Question 5: When was the Meter Convention signed? |
Reference: | BIPM; http://www.bipm.org/en/worldwide-metrology/metre-convention/
(other dates: 1895 = discovery of x-rays; 1905 = special relativity; 1867 – Confederation of Canada; 1876 – centennial of the US).
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Choice A: | 1895 |
Choice B: | 1905 |
Choice C: | 1875 |
Choice D: | 1867 |
Choice E: | 1876 |
Question 6: What are the activities of the Consultative Committee on Ionising Radiation (CCRI)? |
Reference: | BIPM; http://www.bipm.org/en/committees/cc/ccri/#mission
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Choice A: | Definitions of quantities and units. |
Choice B: | Standards for x-ray, γ-ray, charged particle, and neutron dosimetry. |
Choice C: | Radioactivity measurement and SIR. |
Choice D: | Advice to CIPM regarding IR standards and BIPM activities. |
Choice E: | All of the above. |