7. The more penetrating (longer travel distance) the more dangerous a radiation is. According to the following Table, which radiation is the most dangerous and needs the most protection? TABLE 9.3 Properties of lonizing Radiation and Shielding Required Property Characteristics Symbols Travel distance in air Tissue depth Shielding Typical source Alpha Beta Helium nucleus Electron B.-le 200-300 cm 2-4 cm 0.05 mm Paper, clothing Radium-226 4-5 mm Heavy clothing. lab coats, gloves, Carbon-14 Gamma High-energy rays 500 m 50 cm or more Lead, thick concrete Technetium-99m
7. The more penetrating (longer travel distance) the more dangerous a radiation is. According to the following Table, which radiation is the most dangerous and needs the most protection? TABLE 9.3 Properties of lonizing Radiation and Shielding Required Property Characteristics Symbols Travel distance in air Tissue depth Shielding Typical source Alpha Beta Helium nucleus Electron B.-le 200-300 cm 2-4 cm 0.05 mm Paper, clothing Radium-226 4-5 mm Heavy clothing. lab coats, gloves, Carbon-14 Gamma High-energy rays 500 m 50 cm or more Lead, thick concrete Technetium-99m
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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