01_15_86 - CONVERSION FACTORS FOR IONIZING RADIATION...

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CONVERSION FACTORS FOR IONIZING RADIATION Conversion Between SI and Other Units Quantity Symbol for quantity Expression in SI units Expression in symbols for SI units Special name for SI units Symbols using special names Conventional units Symbol for conventional unit Value of conventional unit in SI units Activity A 1 per second s –1 becquerel Bq curie Ci 3.7 × 10 10 Bq Absorbed dose D joule per kilogram J kg –1 gray Gy rad rad 0.01 Gy Absorbed dose rate D · joule per kilogram second J kg –1 s –1 Gy s –1 rad rad s –1 0.01 Gy s –1 Average energy per ion pair W joule J electronvolt eV 1.602 × 10 –19 J Dose equivalent H joule per kilogram J kg –1 sievert Sv rem rem 0.01 Sv Dose equivalent rate H ˙ joule per kilogram second J kg –1 s –1 Sv s –1 rem per second rem s –1 0.01 Sv s –1 Electric current I ampere A ampere A 1.0 A Electric potential difference U, V watt per ampere W A –1 volt V volt V 1.0 V Exposure X coulomb per kilogram C kg –1 roentgen R 2.58 × 10 –4 C kg –1 Exposure rate X coulomb per kilogram second C kg –1 s –1 roentgen R s –1 2.58 × 10 –4 C kg –1 s –1 Fluence φ 1 per meter squared m –2 1 per centimeter squared cm –2 1.0 × 10 4 m –2 Fluence rate Φ 1 per meter squared second m –2 s –1 1 per centimeter
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01_15_86 - CONVERSION FACTORS FOR IONIZING RADIATION...

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