Recent content by quantum_prince

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    Electron confined to a rectangle with walls

    Hi Meir, I use the following formulae. \lambda = \frac{hc}{E12-E11} In such a case I have \lambda = \frac {8McL_y^2}{3h} Taking Mass of electron as 9*10^31 kg c as 3*10^8 m/sec Ly as 400nm and h as 6.634*10^-34, I get \lambda = 0.16 m which is huge where as most of the wavelengths we...
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    Solve Box Potential Problem: Find Wave Functions & Express in Sine/Cosine

    Hi Galileo, This is how I would proceed.I have attempted to find a solution to the problem.Please guide me if am wrong as you did before. General solution to Schroedinger equation: psi(x,t) = phi(x) exp(-i(n+1/2)wt) Now using phi(x) given in our problem pxi(x,t) = A(ph1(x) +...
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    Electron confined to a rectangle with walls

    How did you derive this equation?.Can you post me a link of where you got this from. Regards. QP.
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    Diatomic molecule problem

    We have Heteronuclear diatomic molecules with atomic masses m1 and m2 and an internuclear distance R have rotational energy eigenvalues EJ = BJ(J + 1) , J = 0, 1, 2, . . . when they are considered as a rigid rotor. The rotational constant is given by B = h^2/2µR^2 with the reduced mass µ =...
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    Solve Box Potential Problem: Find Wave Functions & Express in Sine/Cosine

    Taking a particle m with box potential (one dimensional) where V(x) = 0 when mod(x) <=a and V(x) = infinity when mod(x) > a and where wave function phi(x) = A (phi1(x) + ph2(x)) where phi1(x) and phi2(x) are normalized wave functions of the ground state and first excited state We need to Assume...
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    Figuring out if the state x is an eigen state of the hamiltonian

    Assume that the wave function (x, t) at time t = 0 is given by \psi (x,0) = \phi (x) as defined above. Find \psi (x, t) and \psi (x, t)^2 . We need to express the latter in terms of sine or cosine functions, eliminating the exponentials with the help of Euler’s formula. Abbreviation to be...
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    To check if these wave functions are normalized to 1

    Its solved now. Thanks a lot. Regards. QP.
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    Electron confined to a rectangle with walls

    Hi, Could you elaborate a bit more.I don't follow. Regards. QP
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    To check if these wave functions are normalized to 1

    I still don't understand how to proceed. This is what I need to compute.The radius r needs to be found for both radial wave functions.
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    Problem based hermitian operator

    We know that the hermitian operator S interchanges coordinate x with −x. On consider the Hamiltonian H = p^2/2m + V (x) for a particle in a one dimensional symmetric potential V (x) = V (−x). What can be said about the wavefunctions in view of what we proved above i.e A \psi = a \psi and B...
  11. Q

    Electron confined to a rectangle with walls

    Thanks. How can I figure this out to compare the wavelength of a photon emitted in a transition from the first excited state to the ground state with the spectrum of visible light in such a box.
  12. Q

    To check if these wave functions are normalized to 1

    I solved it no problems.It comes to one.All that needs to be done is substitution. The most crucial part of this problem is that additional factor r^2.Without that we cannot proceed anywhere.Thanks a lot for the hints. How do I find the most probable value of radius r in the same question?
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    Figuring out if the state x is an eigen state of the hamiltonian

    Dont we need to add -infinity to infinity to this integral by definition for the definition of H.I have gone through orthonormality.
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    To check if these wave functions are normalized to 1

    It is R which you denoted here so an r(square) term must be introduced when I integrate with respect to r is it not. So it this should be finally integrated is it not ∞ ∫ 4(1/ao)^3 e^(-2r/ao) r^2 dr 0
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    To check if these wave functions are normalized to 1

    As I understand if we integrate it with respect to r then we don't need to apply in that general formulae at all since everrything else is a constant except e raised to -r/ao. Suppose we integrate with respect to ao then this formulae can be applied.What should we integrate with respect to ao or...
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