Assigned 11-Feb-18
1st Due Date: 16-Feb-18
2nd Due Date: 19-Feb-18
Lecture 6: Gamma Decay
Lecture 7: Fission
Lecture 8: Nuclear Force and Nuclear Structure
Lecture 9: Nuclear Reactions
Lecture 10: Radiation Interactions
The first iteration of the exam is due 16-Feb-18. The answers will be posted on 17-Feb-18. Any incorrect answers can be resubmitted by 19-Feb-18. Changed answers will be worth 50 % of the original grade. For the 2nd resubmission the work related to the changes must be shown.
Use lecture notes, textbooks, Chart of the Nuclides, Table of the Isotopes, and web pages. Use the chart of the nuclides as your primary dataset for isotope half-life. Show your work or references on a separate page and save electronically. Please use 3 significant digits for your answers.
Somehow the box for the extra-credit question cannot be checked.
ReplyDeleteRyan Cheung
Let me fix that. I will post an update. If you started working on the original version you can use a comment to indicate the correct answer.
DeleteExtra credit issue fixed. Updated quiz posted.
DeleteHi, would you mind to host another conference tonight?
ReplyDelete9:30pm would be a good time! Thanks
DeleteI will be on at 930 PM
ReplyDeleteReminder exam 2 is due today. Please post any questions to the blog.
ReplyDeleteI am confused by question 5. Are we considering the reaction with or without stable Cl?
ReplyDeleteThank you for your time.
The target is stable Cl. Even if captures a neutron the new isotope is released from the target molecule. The new radioactive Cl isotope is Cl anion, while the stable Cl isotopes are attached to the organic molecule
DeleteExam submitted.
ReplyDeleteHey!
ReplyDeleteI had a quick question on problem 3. I thought I understand how to read the Nilsson diagram, but the spin given by the chart of the nuclides does not appear to be a possible spin state on the provided Nilsson diagram. Am I misunderstanding something? The Nilsson diagram splits from the state predicted from the spherical model into the possible spin states of the deformed nucleus, so the spin state given on the page above (for either the stable compound or the metastable one) should be on the Nilsson diagram, but its not?
From the chart of the nuclides the spin of 111Ag is either 7/2+ or 1/2-. You have to identify which spin and parity state is for 111mAg and which is for 111Ag.
DeleteOn the Nilsson diagram the spin states are listed. For example location H is on a 1/2 spin line. The dashed line means it is negative parity, so this is a 1/2- state.
Locations with 1/2 states are then C, E, F, G, and H.
Locations for 7/2 spin states are then A and B.
Also for question 4 it seems like some of the isotopes can be made from either S- or R- processes. Will you accept both or would you prefer only S- because that one is the most common?
ReplyDeleteexcellent observation. For some of the isotopes either answer will be accepted.
DeleteExam submitted.
ReplyDeleteCompleted the exam and submitted via email.
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ReplyDeleteExam submitted via email
ReplyDeleteI have completed the exam and submitted through canvas and by email.
ReplyDeleteI have emailed you the exam.
ReplyDeleteI submitted the exam via canvas
ReplyDeleteI submitted the exam via canvas
ReplyDeleteOn time, I just forgot to comment until now
ReplyDeleteexam submitted
ReplyDeleteI will post the exam at 1200, as I just answered a few posted questions. These were posted before the deadline but I did not answer them until this morning.
ReplyDeleteIf you have any comments please post to the blog.
Exam re-submitted with corrected answers.
ReplyDeletethat was fast!
DeleteExam 2 resubmitted with corrections.
ReplyDeleteExam 2 resubmitted with explanations for corrections via email.
ReplyDeleteI have submitted Midterm 2 with corrections, added sticky notes to the pdf to explain my corrections.
ReplyDeleteExam 2 resubmitted
ReplyDeleteI resubmitted the exam via email. Corrections are in the message
ReplyDeleteResubmitted exam 2 via email
ReplyDeleteResubmitted exam 2 via canvas
ReplyDeleteI have resubmitted Exam 2 by email, along with corrections.
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