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I. X-ray Crystallography

II. Staff Sign-Off Sheet (XRA)]

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Watch the Video on the Experiment

X-Ray Crystallography

Also you must watch the Radiation Safety video, and

get a Radiation Ring before you use this apparatus.

Ring#_____________ Issued _______________Returned________________

Staff Signature ___________________________________________________ Date ______________

Your Final Grade will not be issued until you have turned in your ring.

Student's Name____________________________________________________________

Partner's Name____________________________________________________________

Pre-lab Discussion Questions

It is your responsibility to discuss this lab with a professor or GSI on the first day of your scheduled laboratory period. This signed sheet must be included as the first page of your report. Without it you will lose 1/3 of a letter grade. You should think about and be prepared to discuss at least the following before you come to lab:

1. What are X-Rays? Why do we use x-rays to examine crystal structures? How are the x-rays in this experiment produced? How do the X-Rays used in the Back Laue and Powder Methods differ?
2. What is Bragg's law? How does it pertain to the following questions?
   1. In the Back Laue method of spectroscopy, why do we see dots?
   2. In the Powder method, why do we see lines?

Staff Signature ___________________________________________________ Date ______________

Completed on the first day of lab? (circle) Yes / No

Mid-lab Questions

On day 5 of this lab, you should have successfully produced a picture of the 111 orientation. Show it to a GSI and ask for a signature.

Staff Signature ___________________________________________________ Date ______________

Completed on the fifth day of lab? (circle) Yes / No

INCLUDE THIS SHEET AS THE FIRST PAGE OF YOUR REPORT

\*\*\*Radiation Ring Required\*\*\*