Wednesday, January 9, 2019

CHEM 418 Nuclear Chemistry, Winter 2019: Lecture 3 Decay Kinetics

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 Sunday 13 January 2019 and due Friday 18 January 2019. 
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25 comments:

  1. Mohammad AljizaniJanuary 13, 2019 at 10:39 PM

    Quiz 3 has been submitted.

    ReplyDelete
  2. AnonymousJanuary 14, 2019 at 6:25 PM

    Quiz 3 has been submitted.

    ReplyDelete
  3. Ken CzerwinskiJanuary 16, 2019 at 9:02 PM

    thanks for the submissions!

    ReplyDelete
  4. UnknownJanuary 17, 2019 at 7:10 PM

    Submitted quiz. If I remember correctly Seaborg is also the only person to have an element named after them while still alive.

    ReplyDelete
    Replies
    1. AnonymousJanuary 18, 2019 at 5:56 PM

      Not anymore, now that element 118 has an official name, Oganesson, named for Yuri Oganessian

      Delete
    2. Ken CzerwinskiJanuary 23, 2019 at 12:49 AM

      that is correct. I know both of them.

      Delete
  5. AnonymousJanuary 17, 2019 at 7:21 PM

    The third problem on the quiz, is the unit of the average lifetime in hours or minutes?

    ReplyDelete
    Replies
    1. Ken CzerwinskiJanuary 23, 2019 at 12:50 AM

      It should read hours rather than minutes. My apologies.

      Delete
  6. AnonymousJanuary 18, 2019 at 12:01 PM

    I have submitted quiz 3.

    ReplyDelete
  7. Chloe DengJanuary 18, 2019 at 12:30 PM

    Quiz submitted.

    ReplyDelete
  8. AnonymousJanuary 18, 2019 at 4:44 PM

    Quiz submitted via email (submit button), and will also upload to canvas.

    ReplyDelete
  9. UnknownJanuary 18, 2019 at 5:38 PM

    I just submitted my quiz

    ReplyDelete
  10. AnonymousJanuary 18, 2019 at 6:18 PM

    Submitted to Canvas

    ReplyDelete
  11. AnonymousJanuary 18, 2019 at 6:33 PM

    Submitted the quiz. Also, as Hanxin noted on question three, shouldn't the answer be given in "hours" instead of "minutes?" Unless I'm mistaken.

    ReplyDelete
  12. Perry NguyenJanuary 18, 2019 at 7:56 PM

    Quiz three has been submitted to canvas

    ReplyDelete
  13. AnonymousJanuary 18, 2019 at 9:06 PM

    Quiz 3 has been submitted.

    ReplyDelete
  14. AnonymousJanuary 18, 2019 at 9:12 PM

    Submitted!

    Also, I was a bit confused on problem 1 of the quiz. Do we just use the equation N=lambda/A with A corresponding to the activity of Uranium-238 in equilibrium with its progeny (presumably Radium-226??) and lambda corresponding to that of Radium-226 (based on ln2 divided by its half-life)?

    ReplyDelete
  15. UnknownJanuary 18, 2019 at 9:45 PM

    Quiz submitted

    ReplyDelete
  16. AnonymousJanuary 18, 2019 at 9:48 PM

    Quiz submitted!

    ReplyDelete
  17. Colten NakataJanuary 18, 2019 at 9:52 PM

    Submitted Quiz 3

    ReplyDelete
  18. AnonymousJanuary 18, 2019 at 10:14 PM

    lecture watched and quiz submitted.

    ReplyDelete
  19. Robert HalvorsenJanuary 18, 2019 at 10:51 PM

    Submitted quiz 3 on canvas.

    ReplyDelete
  20. AnonymousJanuary 19, 2019 at 1:42 PM

    Quiz 3 was submitted on time.

    ReplyDelete
  21. Andy ChiaJanuary 19, 2019 at 8:42 PM

    Quiz 3 has been submitted and lecture has been watched.

    ReplyDelete
  22. Jared LavineJanuary 19, 2019 at 9:49 PM

    quiz submitted and lecture watched

    ReplyDelete

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