Gamma decay is described in two lectures. The first lecture covers the fundamentals of gamma decay and second lecture describes Moessbauer spectroscopy. Different methods to find data on gamma decay yields for decay of isotopes are presented. The energetics involved in gamma decay are provided. This includes recoil from gamma, which is exploited in Moessbauer spectroscopy. Decay types in gamma transitions are explained, focusing on electromagnetic basis for the gamma emission. Transition probabilities and internal conversions inherent to gamma decay are covered. Isotope examples for internal conversion electrons are given. Angular correlations in gamma decay are described with an experimental example provided. The use of gamma decay in Moessbauer spectroscopy is discussed.
Another great lecture about Gamma decay and Moessbauer spectroscopy. enjoyed it.
ReplyDeletethanks for your comments!
DeleteA very informative lecture... albeit a tad dry. The graph of Iron from the martian surface was rather interesting.
ReplyDeleteglad you like the part about Mars
DeleteThank you for the enjoyable lecture. I remember us touching on Mossbauer spectroscopy back in inorganic chem. It's an interesting technique and you went into a lot more detail!
ReplyDeleteGreat lecture as always. I do remember covering the Mossbauer during inorganic last year, and this was a great way for a review.
ReplyDeletethanks for the comment. Always good to review material
DeleteThe examples given in the lecture were helpful when trying to understand what was presented.
ReplyDeletethanks for comment on the examples.
DeleteI enjoyed the part of the lecture on Mossbauer Spectroscopy and the example given relating this technique to its real-world application of detecting evidence of liquid water on mars. I noticed when science journalists write to an intended layperson audience about projects such as the Curiosity Rover, they tend to use phrases such as "the Rover has a miniature chemical lab on board to sniff out the composition of the crust and atmosphere". Would Mossbauer Spec. be considered one of the techniques used to "sniff out" chemicals, as they say? I think it's great learning about how what we're covering in lectures can have such broad applications
ReplyDeletethe Mars Rover is using ChemCam (http://www.msl-chemcam.com/). This is a laser ablation spectroscopy technique. A laser supplies sufficient energy to ionize material. The light emitted identifies the element. This is Laser Induced Breakdown Spectroscopy (LIBS), it is the basis of CHEMCAM (http://msl-scicorner.jpl.nasa.gov/Instruments/ChemCam/). We have a graduate student from the UNLV Radiochemistry program, Nick Wozniak, who is is working on the next generation CHEMCAM at Los Alamos.
DeleteJust finished the lecture and the quiz. I enjoyed learning about the Mossbauer Spectroscopy.
ReplyDeletethanks for the comment
DeleteFinished the lecture and quiz. I enjoy learning about the different decays.
ReplyDeletethank you for your comments.
DeleteGreat lecture this week. The examples were very helpful for completing the quiz.
ReplyDeleteThanks for the comments. I am happy to hear the examples are proving useful.
DeleteI enjoyed the second part on Moessbauer spectroscopy.
ReplyDeletethank you for your comments
DeleteI have finished the lecture and submitted the quiz. I really enjoyed this lecture, especially the connections between the Moessbauer spectroscopy and other spectroscopic methods that I'm more familiar with from previous classes. The between the data from the Martian surface and the presence of water was really cool.
ReplyDeleteI'm also very glad that I was able to take Physical Chemistry before this semester; it's really cool to see some of the applications of what we learned in that class!
thanks for your comments. It is always great to see data and information from other courses utilized.
DeleteI really enjoyed this lecture due to the Moessbauer Spectroscopy. It was very interesting to learn about another type of spectroscopy that I had not yet heard of and am glad to see from Sam's post that it is covered in the inorganic chemistry course, since it seems extremely useful in determining chemical properties and characteristics.
ReplyDeleteI did have a question on the different types of decay schemes and was wondering if you could explain them a little bit more. Thank you in advance!
Let me know what details you want related to decay schemes.
DeleteGamma decay is a bit of interesting thing to me. it's basically emits photons to release energy from excited states, it almost seems more simple than the previous methods of decay we learned about.
ReplyDeletePhoton emission is a common excitation mode for bother nuclear and electon systems.
DeleteMy favorite lecture so far. I enjoyed learning via the visual representations how each gamma feeds different energy state. Viewing how this happens in the nucleus was great.
ReplyDelete