ps1 - Problem 1(6 points Why did the application papers...

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EE/BIOE 597e PROBLEM SET 1 DUE: 20 FEB 2007 Guidelines: 1. Problem set 1 is worth 30% of your Fnal grade and contains Fve problems that are each worth 6 points. 2. Please submit your solutions on or before 4:30 PM Tuesday ±ebruary 20. You may submit your solutions in lecture or deposit them in the drop box located outside 121 EE East. 3. The questions are designed to test your basic understanding of the material and should be answered using one or more paragraphs. 4. Your score will directly re²ect the depth, conciseness, and organization of your answers. Simple yes/no answers are not acceptable. Instead, you must build a case by citing relevant facts and interpreting results from the lecture handouts and journal papers. Although it is not necessary to use a word processor, please write neatly so that I can follow your reasoning. 5. You may wish to cite appropriate equations from the lectures notes or journal papers distributed in class; however, you will not need to derive any expressions or perform numeric calculations.
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Unformatted text preview: Problem 1: (6 points) Why did the application papers distributed in lecture 1 focus exclusively on solid state QR spectroscopy? Is it possible to obtain a pure QR spectra from a liquid? Problem 2: (6 points) Discuss three reasons why QR spectra are frequently acquired with the sample cooled to 77 K. Problem 3: (6 points) Drawing from the distributed journal articles, state several advantages and disadvantages of the exceptional sensitivity of quadrupole resonance transition frequencies to variations in the electric Feld gradient tensor. Problem 4: (6 points) Why does increasing the excitation level ultimately decrease the power absorbed by quadrupo-lar nuclei in a CW spectrometer? Problem 5: (6 points) Consider a material that admits a QR response to both the SORC and SLSE pulse sequences. Under what conditions are the responses from the SORC and SLSE pulses sequences identical?...
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