Sunday, January 29, 2017
Spring 2017 CHEM 312: Lecture 4 Alpha Decay
This lecture discusses alpha decay in radionuclides. Theories on alpha decay are presented. Systematics and energetics involved in alpha decay are presented. The correlation between Q value and decay energy is described. The Geiger Nuttall relationship is provided, described, and utilized in a model for alpha decay. Tunneling is also exploited to described alpha decay, coupling energy and half-life. Gamow calculations are shown to reflect the Geiger Nuttall relationship. Hindered alpha decay is discussed. Hindered alpha decay is employed to described nuclear properties. Hinderance factors are described, along with how they are calculated and where they can be found. Proton and other charged particle emission are presented. The lecture time is 46 minutes. The lecture is assigned 2-Feb-17 and PDF Quiz 4 due 7-Feb-17.
Subscribe to:
Post Comments (Atom)
for the question 2 i just consider the higher energy with shorter half-life, it is right? i send my quiz 4 via email.
ReplyDeleteHello Dr. Czerwinski, just sent you my quiz via email! Thank you I enjoyed the lecture.
ReplyDeletethanks for the comment!
DeleteSubmitted my pdf quiz
ReplyDeleteHi Dr. Czerwinski!!
ReplyDeleteJust sent you PDF_Quiz 4
I like how you put sample calculations on the slide like the one you did for the coulomb barrier equation..super helpful easy to follow. thank you
thank you very much for the comment!
DeleteI've finished reading the lecture and submitted quiz 4. I had a bit of an issue looking at the isotopes table on question 3 as some of the things written there were hard to read.
ReplyDeletethanks for the comment. I understand the copy of the chart of the nuclides is not the best. However all students have the chart, so you can use your book to go to the relevant section.
DeleteSent you an email with an attached quiz. Have a great week!
ReplyDeleteI finished lecture 4 and submitted my quiz. Thank you!
ReplyDeleteI finished lecture 4 and PDF Quiz 4. I sent you an email with PDF Quiz 4 attached. Thanks!
ReplyDeleteI finished the lecture and sent in the quiz, thanks!
ReplyDeletethanks for the comments and PDF quizzes!
ReplyDeleteSubmitted my quiz, thank you!
ReplyDeleteFinished. In alpha decay theory, where is the alpha particle in relation to the daughter nucleus? Is this referring to the event where the a-particle is emitted from the nucleus? Or is the alpha particle approaching the daughter?
ReplyDeleteAlso, the link to the "alpha decay figure" doesn't work for me, nor does the link to the table of isotopes located in "Intro, Chart of Nuclides".
The alpha particle is emitted from the parent nucleus. When it departs the parent the daughter is created.
DeleteThe links from Lawrence Berkeley laboratories do not function well. I will change these.
Submitted the quiz. Thank you!
ReplyDeleteI sent my completed quiz to your email. I liked this lecture, thank you!
ReplyDeleteI've completed and submitted the quiz. Thanks!
ReplyDeleteJust completed the lecture and submitted the quiz.
ReplyDeleteSubmitted quiz 4.
ReplyDeleteQuiz #4 Submitted
ReplyDeletethank you very much for the comments and PDF quizzes.
ReplyDelete