The Quantum Mechanics Solver by Jean-Louis Basdevant & Jean Dalibard

Author:Jean-Louis Basdevant & Jean Dalibard
Language: eng
Format: epub
ISBN: 9783030137243
Publisher: Springer International Publishing

(b)In the above experiment, the value of the magnetic field was B 0 = 2.57 × 10−2 T and the distance D = 1.6 m. Calculate the magnetic moment of the neutron. Evaluate the average velocity v 0 = D∕T 0 and the velocity dispersion δv = v 0 τ∕T 0 of the neutron beam.

(c)Which optical interference experiment is the result reminiscent of?

18.2.6

Suppose one inserts between the two cavities of Fig. 18.1 a device which can measure the z component of the neutron spin (the principle of such a detector is presented in the next section). Determine the probability P +,+ to detect the neutron in the state |n : +〉 between the two cavities and in the state |n : +〉 when it leaves the second cavity, and the probability P −,+ to detect the neutron in the state |n : −〉 between the cavities and in the state |n : +〉 when it leaves the second cavity. Check that one does not have P + = P +,+ + P −,+ and comment on this fact.

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