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(a) A 66-kg researcher absorbs 5 × 10³ neutrons in a workday. The kinetic energy of each neutron is 3.3 MeV. The relative biological efficiency (RBE) for neutrons at this energy is 10. Determine the velocity of the neutrons. What is the equivalent dosage of the radiation exposure, in mrem, of this worker? i. ii.

(a) A 66-kg researcher absorbs 5 × 10³ neutrons in a workday. The kinetic energy of each neutron is 3.3 MeV. The relative biological efficiency (RBE) for neutrons at this energy is 10. Determine the velocity of the neutrons. What is the equivalent dosage of the radiation exposure, in mrem, of this worker? i. ii.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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(a) A 66-kg researcher absorbs 5 × 10³ neutrons in a workday. The kinetic energy of each neutron is 3.3 MeV. The relative biological efficiency (RBE) for neutrons at this energy is 10. i. Determine the velocity of the neutrons. ii. What is the equivalent dosage of the radiation exposure, in mrem, of this worker? (b) The rate at which a radioactive tracer is lost from a patient's body is dependent on two factors: the rate of radioactive decay and the rate at which tracer is excreted out of the body. Medical experiments have shown that the stable isotopes of a particular element that is used as a tracer are excreted with a 6.0 day half-life. The radioactive isotope of the same element has a half-life of 9.0 days. Estimate the fraction of the original radioactive isotope that will be left in the patient after 12.0 days.
Transcribed Image Text:(a) A 66-kg researcher absorbs 5 × 10³ neutrons in a workday. The kinetic energy of each neutron is 3.3 MeV. The relative biological efficiency (RBE) for neutrons at this energy is 10. i. Determine the velocity of the neutrons. ii. What is the equivalent dosage of the radiation exposure, in mrem, of this worker? (b) The rate at which a radioactive tracer is lost from a patient's body is dependent on two factors: the rate of radioactive decay and the rate at which tracer is excreted out of the body. Medical experiments have shown that the stable isotopes of a particular element that is used as a tracer are excreted with a 6.0 day half-life. The radioactive isotope of the same element has a half-life of 9.0 days. Estimate the fraction of the original radioactive isotope that will be left in the patient after 12.0 days.
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