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1. What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient protection for a person working with alpha-emitting sources? 2. What were the effects of shielding on beta particies by cardboard? Estimate the percent of radiation that passed through one sheet of cardboard. Through two sheets. What thickness of cardboard would be necessary to block 99% of the radiation? 3. Answer question 2 for aluminum. What kind of measures might one take when working with beta-emitting sources? 4. What kind of shlelding is effective against gamma rays? What percentage of the gamma radiation passes through four sheets of lead? Would this provide adequate shielding?

1. What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient protection for a person working with alpha-emitting sources? 2. What were the effects of shielding on beta particies by cardboard? Estimate the percent of radiation that passed through one sheet of cardboard. Through two sheets. What thickness of cardboard would be necessary to block 99% of the radiation? 3. Answer question 2 for aluminum. What kind of measures might one take when working with beta-emitting sources? 4. What kind of shlelding is effective against gamma rays? What percentage of the gamma radiation passes through four sheets of lead? Would this provide adequate shielding?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Alpha particles ((radon-222) 90 Activity (counts/s) 270 80 No shielding 70 1 mm cardboard Cardboard 1 mm aluminum 0. Aluminum 1mm lead 30 Lead 是20 S Beta particles (iron-59) 10 Activity (counts/s) Aluminum Thickness (mm). Cardboard Lead 78 78 78 1 3 4 32 7. Thickness of Shielding (mm) 13 1 2 Gamma Ray Shielding 2 40 35 1 Gamma rays (strontium-85) Activity (counts/s) Aluminum Thickness (mm) Cardboard Lead 25 Cardboard 38 38 38 Aluminum 38 38 32 15 Lead 2 38 36 27 10 38 36 23 38 35 17 1 2 3 5 Thickness of Shielding (mm) 4. 7 Analysis 1. What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient protection for a person working with alpha-emitting sources? 1 2 3 2. What were the effects of shielding on beta particles by cardboard? Estimate the percent of radiation that passed through one sheet of cardboard. Through two sheets. What thickness of cardboard 15 16 17 18 19 50 51 would be necessary to block 99% of the radiation? 3. Answer question 2 for aluminum. What kind of measures might one take when working with beta-emitting sources? 52 53 54 55 56 57 4. What kind of shielding is effective against gamma rays? What percentage of the gamma radiation passes through four sheets of lead? WWould this provide adequate shielding? 58 Activity (counts/s) Activity (counts/s) 3, 4. 4)
Transcribed Image Text:Alpha particles ((radon-222) 90 Activity (counts/s) 270 80 No shielding 70 1 mm cardboard Cardboard 1 mm aluminum 0. Aluminum 1mm lead 30 Lead 是20 S Beta particles (iron-59) 10 Activity (counts/s) Aluminum Thickness (mm). Cardboard Lead 78 78 78 1 3 4 32 7. Thickness of Shielding (mm) 13 1 2 Gamma Ray Shielding 2 40 35 1 Gamma rays (strontium-85) Activity (counts/s) Aluminum Thickness (mm) Cardboard Lead 25 Cardboard 38 38 38 Aluminum 38 38 32 15 Lead 2 38 36 27 10 38 36 23 38 35 17 1 2 3 5 Thickness of Shielding (mm) 4. 7 Analysis 1. What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient protection for a person working with alpha-emitting sources? 1 2 3 2. What were the effects of shielding on beta particles by cardboard? Estimate the percent of radiation that passed through one sheet of cardboard. Through two sheets. What thickness of cardboard 15 16 17 18 19 50 51 would be necessary to block 99% of the radiation? 3. Answer question 2 for aluminum. What kind of measures might one take when working with beta-emitting sources? 52 53 54 55 56 57 4. What kind of shielding is effective against gamma rays? What percentage of the gamma radiation passes through four sheets of lead? WWould this provide adequate shielding? 58 Activity (counts/s) Activity (counts/s) 3, 4. 4)
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