I Photoelectric Measurements & the Nature of Surfaces

Click For Summary
Photoelectric measurements are highly sensitive to the nature of the photoelectric surface due to factors such as elemental composition, material type (conducting, semiconducting, or insulating), and the presence of adsorbed layers. The penetration depth of the light frequency used in these experiments significantly influences the results, particularly when ultraviolet light is applied to metallic surfaces. Variations in surface characteristics can alter electron emission efficiency and energy thresholds. Understanding these factors is crucial for accurate interpretation of photoelectric data. The discussion emphasizes the importance of surface properties in photoelectric measurements.
Gerlan Silva
Messages
6
Reaction score
0
Why are photoelectric measurements sensitive to the nature of the photoelectric surface?
 
Physics news on Phys.org
What do you mean by the 'nature' of the surface?
Do you mean the elemental composition, the conducting/semiconducting/insulating nature of the material, the effect of adsorbed layers on the surface?
 
yes, this my friend
 
Gerlan Silva said:
Why are photoelectric measurements sensitive to the nature of the photoelectric surface?

Look at the penetration depth of the frequency of the light being used in such experiments. Keep in mind that the standard photoelectric effect phenomenon is done using UV light, and on metallic surfaces.

Zz.
 

Thread 'The Power of QM and QFT'

We often see discussions about what QM and QFT mean, but hardly anything on just how fundamental they are to much of physics. To rectify that, see the following; https://www.cambridge.org/engage/api-gateway/coe/assets/orp/resource/item/66a6a6005101a2ffa86cdd48/original/a-derivation-of-maxwell-s-equations-from-first-principles.pdf 'Somewhat magically, if one then applies local gauge invariance to the Dirac Lagrangian, a field appears, and from this field it is possible to derive Maxwell’s...
View full post »

Thread 'Importance of Hanbury Brown and Twiss experiment'

I read Hanbury Brown and Twiss's experiment is using one beam but split into two to test their correlation. It said the traditional correlation test were using two beams........ This confused me, sorry. All the correlation tests I learnt such as Stern-Gerlash are using one beam? (Sorry if I am wrong) I was also told traditional interferometers are concerning about amplitude but Hanbury Brown and Twiss were concerning about intensity? Isn't the square of amplitude is the intensity? Please...
View full post »

Thread 'Elementary question about comparing notations of inner product'

First, I need to check that I have the 3 notations correct for an inner product in finite vector spaces over a complex field; v* means: given the isomorphism V to V* then: (a) physicists and others: (u,v)=v*u ; linear in the second argument (b) some mathematicians: (u,v)=u*v; linear in the first argument. (c) bra-ket: <v|u>= (u,v) from (a), so v*u . <v|u> is linear in the second argument. If these are correct, then it would seem that <v|u> being linear in the second...
View full post »

Similar threads

I Question about the Photoelectric Effect and the Work Function of a Metal
Replies
5
Views
2K
B Photoelectric phenomenum can only be proved as a particle effect?
Replies
5
Views
1K
I Why can’t photons “pile up” to eject an electron?
Replies
3
Views
255
I What were the real results of the photoelectric effect experiment?
Replies
5
Views
2K
B Is it possible to get the photoelectric effect in red color frequency?
Replies
11
Views
2K
I Is there a Crookes radiometer device with photoelectric effect?
Replies
1
Views
1K
A Photoelectric effect at metal junctions
Replies
4
Views
1K
B Why is there now evidence of a lag time in the photoelectric effect?
Replies
10
Views
2K
Why Is the Photoelectric Effect Considered Proof of Light's Particle Nature?
Replies
10
Views
3K
A Frequency threshold in the photoelectric effect
Replies
10
Views
2K