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.
Just submitted the quiz. Just wondering, we don't know how the alpha particles are pre-formed inside the nucleus, correct? Are there any theories as to how it does this?
ReplyDeletethe theory is based on the hindrance. with unpaired nucleons a large hindrance is often seen. So the theory is the alpha particle needs to preform and occupy the highest energy shell.
DeleteAlso, I just checked webcampus and received your announcement. I'm really fine with having the course on the radchem site, but I'll probably be checking webcampus more often from now on so either way!
ReplyDeleteI will use the website for the lectures. I will post the grades to webcampus. That way you can see your individual grades.
DeleteJust finished the lecture and submitted the quiz. This was a more interesting lecture and I am glad that it built upon many of the equations from decay kinetics.
ReplyDeleteterrific. I am happy to hear about the connection to the other lecture.
DeleteFinished the quiz and lecture. It was interesting to find out that the hindrance factor is also included in the Table of the Isotopes.I also saw the announcement. Using the original page for lectures and webcampus for grades sounds good to me.
ReplyDeletethanks for the comment. One should always know where data is available.
DeleteFinished the lecture and the quiz. It was interesting to see that spin and parity affect hindrance.
ReplyDeletethanks! the spin and parity will be even more important in beta.
DeleteStill working on lecture 3 which had a lot of hard to digest info since my math is a tad rusty. The super bowl getting in the way did not help. As far as the webpage, I like it the way it is but, since all my other classes are on webcampus and I check it every day, I will be fine moving to webcampus as well.
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ReplyDeleteIs there no audio for lecture 4 on youtube?
ReplyDeleteI tried to listen to the Youtube one as well and didn't get any audio. :-(
DeleteI also experienced a lack of audio on the youtube channel. Trying to listen to the audio without downloading media components for quicktime
DeleteFinished listening to the lecture and submitted the quiz.
ReplyDeletethanks for the comments
DeleteJust finished the powerpoint and quiz. Interesting read on one of the fundamental types of radioactive decay.
ReplyDeletethanks for input
DeleteEven though there was no audio on the video, this lecture was easier to understand overall. This section was fairly straight forward, although I would've liked audio explanations for some of the equations since there were a lot of terms that went with them.
ReplyDeletesorry about this. I will reload the youtube video.
DeleteNew youtube with audio now available. Let me know if this does not work.
DeleteI checked the video and the audio works perfectly now! Thank you. I'll go back and watch the video later on.
DeleteDone with lecture and quiz.
ReplyDeletethanks for the comments!
DeleteJust finished the lecture and quiz. Found this lecture to be interesting and helpful in tying concepts together. The connection between the Coulomb barrier, energy of the particle, and probability of tunneling was very cool! I had never considered tunneling effects for particles other than electrons but it makes sense! :)
ReplyDeleteI always like to see how tunneling is involved in processes.
DeleteI misread the date spanning this lecture time. I am a little bit late on the material and turning in the assignment but I understand the concept. P-Chem 2 has recently been covering similar topics. The reading can be dense but the youtube videos allow me to stay afloat.
ReplyDeleteThanks for the note. I am happy that you are engaging the material and learning the subject matter. That is goal of the course.
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