Existence and uniqueness for the reflection and transmission problem in stratified electromagnetic mediaWe have developed an experimental apparatus that makes it possible for students to make detailed quantitative measurements of the Fresnel reflection coefficients for the reflection of light from a plane interface. The experiment is made possible by the linear polarization, and impressive power stability, exhibited by visible and near-infrared diode-laser modules, and it has been a very effective addition to our sophomore electromagnetism laboratories.
The analog of the ground state of 'Bi was investigated by both the Bi(P, n) SPo and the 'Bi(P, nP) Bi reactions. The Coulomb energy difference Po-~Bi was determined as 18.92 + 0.03 MeV, and the relative partial widths for proton decay into the P~i2, f5i2, and p3/2 channels were determined. The total width of the analog state was found to be 380+ 80 keU.
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