A beam of silver atoms with electron spin ½ travels along the +y-axis. The beam passes through a series of two Stern-Gerlach spin-analyzing magnets, each of which is designed to analyze the spin component along the z-axis. The first Stern-Gerlach analyzer allows only particles with spin up (along the z-axis) to pass through. The second Stern-Gerlach analyzer allows only particles with spin down (along the z-axis) to pass through. The particles travel at speed v between the two analyzers, which are separated by a region of space that has a length d in which there is a uniform magnetic field Bo pointing in the x-direction. (This is just like the previous question, the results of which will prove essential here!) a) Sketch the setup. If Bo=0, how many particles will be transmitted through the 2nd analyzer? Explain your reasoning.

icon
Related questions
Question

I need some help with this question.

A beam of silver atoms with electron spin ½ travels along the +y-axis. The beam passes through
a series of two Stern-Gerlach spin-analyzing magnets, each of which is designed to analyze the
spin component along the z-axis. The first Stern-Gerlach analyzer allows only particles with spin
up (along the z-axis) to pass through. The second Stern-Gerlach analyzer allows only particles
with spin down (along the z-axis) to pass through. The particles travel at speed v between the
two analyzers, which are separated by a region of space that has a length d in which there is a
uniform magnetic field Bo pointing in the x-direction. (This is just like the previous question, the
results of which will prove essential here!)
a) Sketch the setup. If Bo=0, how many particles will be transmitted through the 2nd
analyzer? Explain your reasoning.
b) If Bo>0, find the smallest value of d such that 50% of the particles transmitted by the first
z-analyzer are transmitted by the second z-analyzer.
c)
Very briefly, explain physically why particles are transmitted in part b (but not part a)
d)
Under the same conditions as part b), what is the smallest value of d such that 100% of the
particles are transmitted by the second analyzer? You should be able to get the answer without
doing any additional calculations, just using your results from part b).
Transcribed Image Text:A beam of silver atoms with electron spin ½ travels along the +y-axis. The beam passes through a series of two Stern-Gerlach spin-analyzing magnets, each of which is designed to analyze the spin component along the z-axis. The first Stern-Gerlach analyzer allows only particles with spin up (along the z-axis) to pass through. The second Stern-Gerlach analyzer allows only particles with spin down (along the z-axis) to pass through. The particles travel at speed v between the two analyzers, which are separated by a region of space that has a length d in which there is a uniform magnetic field Bo pointing in the x-direction. (This is just like the previous question, the results of which will prove essential here!) a) Sketch the setup. If Bo=0, how many particles will be transmitted through the 2nd analyzer? Explain your reasoning. b) If Bo>0, find the smallest value of d such that 50% of the particles transmitted by the first z-analyzer are transmitted by the second z-analyzer. c) Very briefly, explain physically why particles are transmitted in part b (but not part a) d) Under the same conditions as part b), what is the smallest value of d such that 100% of the particles are transmitted by the second analyzer? You should be able to get the answer without doing any additional calculations, just using your results from part b).
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 5 images

Blurred answer