This lecture presents Beta decay. The observations from beta decay are used as the basis of the neutrino hypothesis. The decay spectra from beta emission is used to develop models. The impact of Coulomb interactions on positron and electron spectral shape is presented. This discussion is used to explain the develop of models to evaluate decay constants. Selection rules in beta decay and beta transitions are explained, and coupled to spin and parity difference between the parent and daughter states. Log ft calculations are presented as a means to evaluate transitions. Double beta decay and delayed neutron emission from beta decay are introduced.
Homework questions from the end of this lecture are due in class or can be returned by e-mail on 1 October.
Homework questions from the end of this lecture are due in class or can be returned by e-mail on 1 October.
When I was doing the homework, i had trouble with determining which mode that Ti-45 decays. The chart of the nuclides said that it was primarily positron, while the online chart of the isotopes detailed that it was electron capture. Some further research showed that it is EC and Positron, so I wasn't sure how we would apply the log f functions to that.
ReplyDeleteAaron
DeleteYou can choose one decay mode and calculate with that. You can also look at the 45Ti decay in the table of the isotopes and compare your logft calculation with the data.
I have finished this lecture.
ReplyDeleteFinished lecture 5 on Beta Decay
ReplyDeleteFinished Lecture 5
ReplyDeleteFinished the lecture - just forgot to post.
ReplyDeletefinished the lecture
ReplyDeleteI went over this lecture a third time. I didn't feel right posting without having a strong understanding of the material.
ReplyDeleteI finished lecture 5.
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