Register to reply 
Degenerate Energy Levels 
Share this thread: 
#1
Oct1010, 02:38 PM

P: 120

Hi...
I'm having a little trouble understanding this concept. An energy level is a level where fx. electrons can be in. Ground state, 1st excited state etc., right ? So if I'm not mistaken, a degenerate state is when two or more different quantum states (Fx. electrons) are in the same energy level ? Does this mean, for hydrogen at least, that the ground state is not degenerate, since there is only "room" for one electron/state in that level ? And then for the other levels, according to the orbitals of the atom, there are "room" for more states in that perticular energy level ? I just think I'm a bit confused about this. Not even sure I've asked the right question :) But I hope for some clarity of some sort :) Regards 


#2
Oct1110, 02:24 PM

P: 1,261

I'm a little lost on what "fx" is, but it sounds like you're on the right track. You wouldn't say that the "ground state of hydrogen is degenerate," but you would say that the two n=1 spin states are degenerate (i.e. spin up and spin down), because they have the same energy. Similarly (for n=2, l=1) you could say the three different p orbitals are degenerate (again, because they have the same energy).



#3
Oct1110, 04:58 PM

P: 120

Hmmm...
So it's when you have different states, due to different quantum numbers, in the same energy level, you have degeneracy ? So for n,l,m = "Large numbers" you would have a large "multi"fold degeneracy ? But what happens when you take fine structure, and hyperfine structuere into account ? Then you get some small changes, splittings, in energy levels all of a sudden. Does this mean that the n=1 state, for example, is not degenerate anymore, because the small difference in energy levels ? Or have I misunderstood something ? :) Regards 


#4
Oct1210, 02:02 PM

P: 1,261

Degenerate Energy Levels



#5
Oct1310, 01:27 PM

P: 120

Ok... Thank you very much :)



Register to reply 
Related Discussions  
Total energy levels of the electron and rest energy  Quantum Physics  1  
Fermi energy and ratio of the number of occupied levels at an energy  Advanced Physics Homework  5  
Degenerate energy levels  Advanced Physics Homework  4  
Nondegenerate and degenerate perturbation theory  Quantum Physics  13  
Degenerate matter total energy...  Quantum Physics  15 