Match each unit used in dosimetry to its definition.Group of answer choicesSI unit of absorbed dose, equal to 1 joule of energy absorbed per kilogram of materialUnit of radiation exposure, equal to the production of 2.58x10-4 coulombs of charge produced by the radiation per kilogram of dry air through which the radiation passesSI unit of activity, equal to one radioactive decay per secondOlder unit of activity, defined to be 3.7x1010 transformations per second, which is approximately the activity of one gram of radiumUnit relating absorbed dose to the degree of biological damage caused by a particular type of radiation
Question
Match each unit used in dosimetry to its definition.Group of answer choicesSI unit of absorbed dose, equal to 1 joule of energy absorbed per kilogram of materialUnit of radiation exposure, equal to the production of 2.58x10-4 coulombs of charge produced by the radiation per kilogram of dry air through which the radiation passesSI unit of activity, equal to one radioactive decay per secondOlder unit of activity, defined to be 3.7x1010 transformations per second, which is approximately the activity of one gram of radiumUnit relating absorbed dose to the degree of biological damage caused by a particular type of radiation
Solution
- Gray (Gy): This is the SI unit of absorbed dose, equal to 1 joule of energy absorbed per kilogram of material.
- Roentgen (R): This is the unit of radiation exposure, equal to the production of 2.58x10-4 coulombs of charge produced by the radiation per kilogram of dry air through which the radiation passes.
- Becquerel (Bq): This is the SI unit of activity, equal to one radioactive decay per second.
- Curie (Ci): This is an older unit of activity, defined to be 3.7x1010 transformations per second, which is approximately the activity of one gram of radium.
- Sievert (Sv): This is the unit relating absorbed dose to the degree of biological damage caused by a particular type of radiation.
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