Hello friends.
My question consists two parts,
1-What is the difference between an optical and an acoustic phonon?
1-What are the conditions by which we can decide the type of phonon i.e optical or acoustic phonon ?
Hope to get the reply soon.
thank you sir for ur quick reply ...now i understood sir...but sir if the particle is not coming from infinity then what will be the situation on trapping
Sir you got my problem exactly as i was thinking but still if suppose there are certain energy levels just below vacuum level then Is it possible for electron to loose its kinetic energy to go into lower energy level .How energy conservation law holds
Thanks for ur positive response
Actually sir i have confusion on trap condition and scattering condition for electron in finite potential well.
In given section 2.6 author discussed two different cases (1)when total energy E is negative i.e trapping condition (2)when total energy E is positive...
Hello everyone
I am searching for the answer for the condition (related to the total energy of the particle E) for which any particle will go into the square potential well.
I have studied Griffiths's quantum mechanics book Introduction to the quantum mechanics Section 2.5 and 2.6) but still...