1. Nuclear Magnetic Resonance (NMR)
Student: Mohammed O. Alshammari
Instructor: Dr.Akhtar Naqvi

2. Outline
Introduction
Theory
Experiment
Results
conclusion

3. What is it?

4. The Basic Principle of NMR
DC magnetic field
AC magnetic field
Larmor frequency
Spin rules

5. Spin-lattice: return to equilibrium
Relaxation Time
Spin-lattice: return to equilibrium
Spin-spin: nuclei fall out of alignment

6. Equipment Used

7. Tuning the magnet

8. Equations to determine T1 and T2
ln[(Meq-M(t))/(2Meq)]=-t/T1
ln[Mxy(t)/Meq]=-t/T2

9. Results T1 for LMO T1=42.13 ms τ(s) Mτ Meq ln[(Meq-M(τ))/2Meq] 0.035
0.5
14.3
0.05
1.2
0.065
2.4
0.08
3.6
0.095
4.3
0.11
5.4
0.125
7.2
0.14
10.6
0.155
11.5
0.17
12.6
0.185
13.4
0.2
14.2

10. T2 for LMO T2=16.94ms

11. T1 for glycerin T1=39.2ms τ(s) M(τ) Meq ln[(Meq-M(τ))/2Meq] -12.6 12.7
-12.6
12.7
0.005
-9.95
0.01
-7.8
0.015
-5.8
0.02
-3.8
0.025
-1.95
0.03
1.4
0.04
3.2
0.05
5.3
0.06
7.5
0.07
8.6
0.08
9.7
0.09
10.4
0.1
10.9
0.11
11.1
0.12
11.4
0.13
11.6

12. T2 for glycerin T2=36.4

13. Conclusion

14. Thank you