This lecture covers the fundamental equations that describe the decay of radionuclides. Basic equations and their utility are presented. Equations for mixtures, equilibrium, and branching of radionuclides are covered. Examples are provided for error evaluation from counts, activity determination, evaluation of half life, and lifetime of isotopes. Discussion of natural radiation and dating are given. Examples are provided for dating from 238U, 14C, and the Oklo reactor. The lecture time for part 1 is 44 minutes. Part 2 is around 58 minutes.
The lecture is assigned on Tuesday 9 January 2018 and due Sunday 14 January 2018.
Lecture reviewed and PDF quiz 3 submitted.
ReplyDeletethanks for the quiz. The is an error in question 1. Remember that 1 Ci= 3.7E10 Bq. The activity in question 1 is 3.7E7 Bq.
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Deletelecture 3 reviewed and pdf quiz 3 emailed.
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ReplyDeleteNot quite sure on Question 2. Does the question mean if the coefficient = 1/0, it is not needed?
Ryan Cheung
The idea behind the question is to compare the produced isotope half-life to the irradiation time. If the half-life is long compared to the irradiation time the saturation factor is not needed.
DeleteAs an example, consider a 10 minute irradiation. If the produced isotope has a half-life of 1 minute, most of the produced isotope will decay during the irradiation, so the saturation factor is needed. If a produced isotope has a half-life of 1 year, very few of the atoms will decay during the 10 minute irradiation, so the saturation factor is not needed.
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ReplyDeleteReviewed Lecture 3 and submitted the quiz. I also attempted to download the ERG nuclides program from the link you provided in the supplementary materials section, but my computer blocked the setup wizard due to detected security risks--with no way for me to allow the program to run. In part 2 on the lecture, you mention that this program will probably be needed for exams, so are there any alternatives or workarounds which would allow me to use this or a similar tool?
ReplyDeleteWhen you try to run the ERG file and it warns you, look at the more info drop down arrow and it will allow you to install it anyway.
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ReplyDeleteDownloading the Nuclide Decay file for some reason gives me version 1.0.0.1 instead of 2.0.0.2 Seems to look decently different. Trying to figure it out.
Reviewed lecture 3 and submitted the PDF quiz.
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