An Experimental Measurement of the Gyromagnetic Ratio of the Free Electron. [Offprint].
1954·[College Park, MD]:
by PIDD, Robert Wallace. (b. 1921); Louisell, W. H.; Crane, H. R.
[College Park, MD]:: The Physical Review, 1954., 1954. Offprint. Original wrappers. Rubber ownership stamp of George E. Uhlenbeck (1900-1988) (1949-59). Very good. Abstract: The gyromagnetic ratio of the free electron is measured by a method which is an extension of the classical double-scattering experiment. A magnetic field is interposed between the first and second scattering foils, whose direction is parallel to the path followed by the electrons. The electron spins precess in the magnetic field, resulting in a rotation of the plane of maximum asymmetry, as observed after the second scattering event. In the experiment reported, the rotation is approximately 1800 degrees. In the motion of the electron between the two scatterers the small lateral component of velocity gives rise to a "cyclotron" motion whose frequency is, theoretically, the same as the spin precession frequency to within about one part in a thousand. The cyclotron motion, therefore, furnishes a convenient reference frequency, but it also introduces problems in that it causes the asymmetries which have their origin in geometrical misalignment, finite aperture, etc., to follow the rotation of the spin asymmetry. By comparing all measurements made with the foils of high atomic number with measurements made with an aluminum foil of equal scattering power, and by further precautionary procedures and cross checks, the spin asymmetry is separated from asymmetries of other origin. The result, for 420-kev electrons and gold scatterers, is g = 2.00 ± 0.01. Plans for a more precise measurement are mentioned. / Pidd was a professor of Physics at the University of Michigan (Inventory #: S13342)
You can be confident that when you make a purchase through ABAA.org, the item is sold by an ABAA member in full compliance with our Code of Ethics. Our sellers guarantee your order will be shipped promptly and that all items are as described. Buy with confidence through ABAA.org.