- #1
- 39
- 0
Hi there,
Im having a problem with the results im getting for an experiment Im doing in relation to the photoelectric effect. My graph is very similar to that in the attachment, except for the fact that the line at A and again after the drop is sloping at a very steep angle to begin with.
To me this means that the current is varying with the portential before the saturation voltage is reached...does this make any sense? Should i be grounding something other then the obvious maby?
My setup is a zinc cathode within a copper tube under vacume. Im directing uv light from a mercury vaper lamp through a quartz window at the cathode.
Any thoughts would be some help, im getting the correct work functions but im curious to know why its different?
Cheers
Im having a problem with the results im getting for an experiment Im doing in relation to the photoelectric effect. My graph is very similar to that in the attachment, except for the fact that the line at A and again after the drop is sloping at a very steep angle to begin with.
To me this means that the current is varying with the portential before the saturation voltage is reached...does this make any sense? Should i be grounding something other then the obvious maby?
My setup is a zinc cathode within a copper tube under vacume. Im directing uv light from a mercury vaper lamp through a quartz window at the cathode.
Any thoughts would be some help, im getting the correct work functions but im curious to know why its different?
Cheers
Attachments
-
3.3 KB Views: 443