Sunday, January 10, 2016

CHEM 418 Nuclear Chemistry, Winter 2016: 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. 
Posted by at

21 comments:

  1. UnknownJanuary 14, 2016 at 5:35 PM

    I really enjoy the lecture 3. The animation of Schrodinger's cat is really fun. Moreover, the examples of calculation are really useful for understanding the concepts.
    I sent the lecture 3 pdf quiz as an attachment through email.
    Thank you

    ReplyDelete
  2. UnknownJanuary 15, 2016 at 4:43 PM

    Submitted Quiz 3

    Cheers


    -Faruq

    ReplyDelete
  3. AnonymousJanuary 15, 2016 at 5:45 PM

    Quiz 3 submitted through email. Thank you!

    ReplyDelete
  4. AnonymousJanuary 15, 2016 at 8:00 PM

    Quiz 3 sent via email
    -Taylor

    ReplyDelete
  5. UnknownJanuary 16, 2016 at 5:40 PM

    Quiz 3 sent to the Canvas email!

    ReplyDelete
    Replies
    1. Ken CzerwinskiJanuary 16, 2016 at 6:08 PM

      thanks for the PDF quiz. The curie is defined as 1 gram of 226Ra based on a presentation from Rutherford (http://www.nature.com/nature/journal/v84/n2136/pdf/084430a0.pdf)

      Delete
  6. Ken CzerwinskiJanuary 16, 2016 at 6:21 PM

    Some guidance on question 1.

    You need to find total number of counts (M). The square root of this number is the standard deviation.

    100 decay/s * 60 s * 0.05 = M
    The standard deviation is square root of M.

    ReplyDelete
  7. AnonymousJanuary 16, 2016 at 8:02 PM

    Quiz 3 submitted via email.

    ReplyDelete
  8. AnonymousJanuary 16, 2016 at 8:30 PM

    Lecture viewed and quiz submitted.

    Thank you for your help on question 1!

    ReplyDelete
  9. AnonymousJanuary 16, 2016 at 9:07 PM

    Would you like us to consider only +1 stdev or also -1 stdev?

    ReplyDelete
    Replies
    1. Ken CzerwinskiJanuary 16, 2016 at 9:12 PM

      Sorry, I should have clarified. Please use + and - the standard deviation.

      Delete
    2. AnonymousJanuary 16, 2016 at 9:25 PM

      Thank you. I sent my quiz through Canvas email.

      Delete
  10. Isaac Shiva MillerJanuary 16, 2016 at 11:10 PM

    I have emailed you my PDF quiz 3.
    I am not sure if I did number 1 correctly.
    I enjoyed the attachment about the natural Oklo nuclear reactor in Africa. I thought that was incredible.

    ReplyDelete
    Replies
    1. Ken CzerwinskiJanuary 17, 2016 at 9:58 AM

      thanks for the PDF quiz, all good!

      Yes the Oklo reactor is an interesting story. The French notices the decrease in the 235U concentration, due to the fact it fissioned when the conditions permitted the natural reactor to function.

      Delete
  11. AnonymousJanuary 16, 2016 at 11:44 PM

    Lecture 3 watched and Quiz 3 submitted by email!

    ReplyDelete

Subscribe to: Post Comments (Atom)