Some features of laser heating of oxidizable metals in air by obliquely incident radiation

Abstract

We construct a kink solution on a non-BPS D-brane using Berkovits' formulation of superstring field theory in the level truncation scheme. The tension of the kink reproduces 95% of the expected BPS D-brane tension. We also find a lump-like solution which is interpreted as a kink-antikink pair, and investigate some of its properties. These results may be considered as successful tests of Berkovits' superstring field theory combined with the modified level truncation scheme.

Enhanced melt pool stirring in welding with dynamic polarised laser beam

“…Only a few investigations were carried out with different states of polarisation which were temporally hold constant. [12][13][14][15][16][17] Garashchuk et al 13 showed for steel that in the case of a ppolarisation (i.e. the electrical field vector E is polarised parallel to the processing velocity), the penetration depth and the cross-sectional area were higher than in the case of s-polarisation.…”