During the deep X-ray therapy high energy X-rays are used. They are filtered by passing them through copper and aluminium plates. If the copper plate has thickness ?1 = 2.5 mm and aluminium plate ?2 = 4 mm, find reduction in X-ray beam intensity. Linear attenuation coefficients for copper and aluminium are ?1 = 0,32 cm –1 , and ?2 = 0,15 cm –1 , respectively. If a vial contains 400 MBq of fluorine-18 (F-18) at 12:00 on 20 March 2019, how much radioactivity will be present in the vial at 14:00 on 20 March 2019? Please input your answer in Bq and Ci.
During the deep X-ray therapy high energy X-rays are used. They are filtered by passing them through copper and aluminium plates. If the copper plate has thickness ?1 = 2.5 mm and aluminium plate ?2 = 4 mm, find reduction in X-ray beam intensity. Linear attenuation coefficients for copper and aluminium are ?1 = 0,32 cm –1 , and ?2 = 0,15 cm –1 , respectively. If a vial contains 400 MBq of fluorine-18 (F-18) at 12:00 on 20 March 2019, how much radioactivity will be present in the vial at 14:00 on 20 March 2019? Please input your answer in Bq and Ci.
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During the deep X-ray therapy high energy X-rays are used. They are filtered by passing them through
copper and aluminium plates. If the copper plate has thickness ?1 = 2.5 mm and aluminium plate ?2 =
4 mm, find reduction in X-ray beam intensity. Linear attenuation coefficients for copper and aluminium
are ?1 = 0,32 cm –1
, and ?2 = 0,15 cm –1
, respectively.
If a vial contains 400 MBq of fluorine-18 (F-18) at 12:00 on 20 March 2019, how much radioactivity will
be present in the vial at 14:00 on 20 March 2019? Please input your answer in Bq and Ci.
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