Eur. Phys. J. D 25, 253-259 (2003)
https://doi.org/10.1140/epjd/e2003-00212-8

Quantum dynamics of the Stern-Gerlach (S-G) effect

School of Physics, Suranaree University of Technology Nakorn Ratchasima 3000, Thailand

Corresponding author: ^a edouard@ccs.sut.ac.th

Received: 15 October 2002
Revised: 3 April 2003
Published online: 22 July 2003

Abstract

A quantum dynamical treatment of the S-G effect, to the leading order in for the electron, where α is the fine-structure constant, and for spin 1/2 charged particles (e.g., the proton), in general, leads to a unitary expression for the probability density on the observation screen, where the magnetic field has a controllable longitudinal uniform component along the initial average direction of propagation of the particle, in addition to a non-uniform, almost longitudinal, magnetic field lying in the plane defined by the quantization axis, in question, of the spin and the initial average direction of propagation.