User:Brian P. Josey/Notebook/Junior Lab/2010/10/11: Difference between revisions
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== | ==Electron Diffraction== | ||
* | For this experiment, we are measuring the de Broglie wavelength. | ||
==Equipment== | |||
This experiment uses the following pieces of equipment: | |||
* Digital Calipers | |||
* HP 6216B Power Supply | |||
* Electron diffractor with graphite in it, 2555 | |||
* 3B U33010 DC Power Supply 0-5 kV | |||
'''Note''' Do not ever have a greater current than 0.25 mA, this will puncture the carbon sheets in the graphite and ruin the equipment. | |||
==Set Up== | |||
Following the diagram in Gold's manual, the one taped to the DC Power Supply, and the one [[Physics307L:Labs/electron diffraction|on the experiments web page, here]], we connected all of the wires on the set up as so: | |||
# F3 on diffraction tube to the left plug on the 6.3V on 3B Power supply, | |||
# F4 on diffraction tube to the right on above "Heater" written in pencil | |||
#* F4 also to the positive plug on HP power supply "Low Voltage Bias" | |||
# C5 on tube to HV+ on 3B | |||
# C7 to multimeter | |||
# Multimeter to HV- on 3B | |||
# Low Voltage bias negative to HV- on 3B power supply | |||
# 3B power supply HV- to ground | |||
==Procedure== | |||
After plugging in and connecting all of our instruments, we turned on the heater and power supply. We waited for the heater to warm up for a while before applying any voltage or current to the system. Then we upped the potential and took data points. It helps to use duct tape to seal up any holes in lab to get rid of all light. | |||
Revision as of 15:33, 11 October 2010
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Electron DiffractionFor this experiment, we are measuring the de Broglie wavelength. EquipmentThis experiment uses the following pieces of equipment:
Note Do not ever have a greater current than 0.25 mA, this will puncture the carbon sheets in the graphite and ruin the equipment. Set UpFollowing the diagram in Gold's manual, the one taped to the DC Power Supply, and the one on the experiments web page, here, we connected all of the wires on the set up as so:
ProcedureAfter plugging in and connecting all of our instruments, we turned on the heater and power supply. We waited for the heater to warm up for a while before applying any voltage or current to the system. Then we upped the potential and took data points. It helps to use duct tape to seal up any holes in lab to get rid of all light.
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