Problem5

Problem5 - Problem Set 5 Chemistry 154A/254A: Quantum...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Problem Set 5 Chemistry 154A/254A: Quantum Chemistry Professor Song-I Han Teaching Assistant: Wang, Xiqing (Francis) Office: Chemistry 3223 Office: Chem 1126/ Dahlquist Lab (1 th floor) Office hours: Tue, Th 4-5 pm Office hours: Wed 1-2 pm and Fr 4-5pm Email: songi@chem.ucsb.edu Email: xwang@chem.ucsb.edu 1. Consider the CPMG pulse sequence diagrammed below: From this experiment, the T 2 was determined to be 1.4s. A delay of τ = 100ms was used. Compute the intensities of the 1 st , 5 th and 10 th echos, relative to the intensity (I 0 ) of the FID observed immediately following the first 90º pulse in the experiment. For problems 2 and 3, on the next page, experiments are being performed on a chemical with an NMR spectrum that contains a singlet and a doublet (split by J coupling), as shown below. Assume a 7T magnet is being used, where the frequencies of the peaks are (from right to left) a 300.106500 MHz b 300.107410 MHz c 300.107390 MHz
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. In problem 2, a spin-echo experiment is being performed on the chemical system for which the
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Problem5 - Problem Set 5 Chemistry 154A/254A: Quantum...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online