Physics307L F07:People/Martin/ESR
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ESR Summary
- Link to the lab manual:
[1].
- Link to my lab notebook for this experiment: [[2]]
Purpose
The purpose of this experiment is to figure out the [math]\displaystyle{ g_s\; }[/math] factor from the spin flip transition of a free electron in a magnetic field.
Results
- Above is a graph of the Magnetic field provided by the Helmholtz coils times the Bohr magnetron vs the frequency times Planck's constant. The slope is the g factor.
Final value for [math]\displaystyle{ g_s\; }[/math]: 1.86
Uncertainty in [math]\displaystyle{ g_s\; }[/math]: 0.005
Accepted value for [math]\displaystyle{ g_s\; }[/math]: 2
Relative error: 7.26%
How could we improve our experiment
- Our percent error was about 7% this is not the best experiment we have done all semester but the results were still not bad.
- Since most of our data yields the same result and the uncertainty in our result was small I believe that the main source of error was systematic.
- If I were to do this experiment again, I would first check all of the equipment to insure that it all worked properly. This is the only thing that I can think to do to solve this systematic error problem.
Conclusions
- Our percent error was about 7% this is not the best experiment we have done all semester but the results were still not bad.
- I learned a lot during the experiment, mostly how to set up that complicated circuit and how to better use an oscilloscope to collect data.
Possible sources of error
- Since most of our data yields the same result and the uncertainty in our result was small I believe that the main source of error was systematic.I am thinking bad equipment that might have effected our data.