Magnetic Field Surveys of Thin Sections

Thin Sections

Knowledge of the thickness of sections is important for proper interpretation of electron micrographs. Therefore, the thicknesses of sections of n-butyl methacrylate polymer were determined by ellipsometry, and correlated with the color shown in reflected light. The results are: gray, thinner than 60 mmicro; silver, 60 to 90 mmicro; gold, 90 to 150 mmicro; purple, 150 to 190 mmicro; blue, 190 t...

Educational Meteorite Thin Sections

Hydrogen photoionization cross sections for strong field magnetic white dwarfs

A recently developed computational scheme, based on the complex-rotation method combined with a mixed Slater-Landau basis expansion, has been applied to calculations of photoionization from atomic hydrogen ground and excited states in a strong magnetic field typical of magnetic white dwarf stars. Photoionization cross sections are presented for the twelve states 1s0, 2s0, 2p0, 2p−1, 3s ′ 0, 3p0...

The WENSS & Dwingeloo surveys and the Galactic magnetic field

Aims. We investigate the structure of the Galactic magnetic field in the 2nd Galactic quadrant using radio continuum polarization data from the 325 MHz WENSS (WEsterbork Northern Sky Survey) survey in combination with earlier single-dish observations. Methods. We study gradients in polarization angle along Galactic longitude and latitude in the region 130 • l 173 • and −5 • b 31 •. These gradie...

Critical Magnetic Field and Asymptotic Behavior of Superconducting Thin Films

In this paper, we discuss the vortex structure of the superconducting thin films placed in a magnetic field. The discussion is based on a system of simplified Ginzburg–Landau equations. We obtain the estimate for the lower critical magnetic field Hc1 , in the sense that it is the first critical value of hex, the applied field, for which the minimal energy among vortexless configurations is equa...