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stern- gerlach experiment

stern- gerlach experiment. NORTH. SOUTH. Collimated beam of Ag(g) atoms. Magnetic Field Z-direction ↑. Stern- gerlach experiment.

aristotle-delgado
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stern- gerlach experiment

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  1. stern-gerlach experiment NORTH SOUTH Collimated beam of Ag(g) atoms Magnetic Field Z-direction ↑

  2. Stern-gerlach experiment • After passing through the magnetic field twobeams of Ag(g) atoms emerge – suggests that some sort of quantized angular momentum is associated with a charged particle (classically a range of deflections is expected). Can the deflection be due to an electron? Can the deflection be due, in particular, to orbital angular momentum?

  3. Stern-gerlach experiment • Silver has an odd number of electrons. The usual table of l and mlvalues shows that orbital angular momentum cannot explain the Stern Gerlach experiment for Ag(g).

  4. Stern-gerlach experiment • Neglecting history, we can write an electron configuration for neutral Ag which also suggests that orbital angular momentum cannot account for the Stern Gerlach expt. • Ag: [Ar] 3d104s24p64d105s1 • The lone electron is in an s orbital for which l = 0.

  5. Stern-gerlach experiment for Ag • Again, for the lone unpaired electron in Ag we have l = 0. • Magnitude of orbital angular momentum “squared” = l(l +1)ħ2 = 0 • Similarly LZ = mlħ = 0 • The z-component of angular momentum determines how many “beams” we should see in the Stern-Gerlach experiment.

  6. Stern-gerlach experiment

  7. Spin wave functions

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