Synthese der γ-Amino-n-kapronsäure und des α′-Äthyl-α-pyrrolidons

Ohne Zusammenfassung     

Diffractive-optical processing of temporal signals, part Ⅰ: basic principles

The topic of this paper is the utilization of time for optical information processing. As clock rates in computing and communication systems increase and reach the THz border, optical techniques for signal filtering, shaping and clock distribution become attractive. We discuss the use of optics in temporal processing and consider in particular diffractive solutions. In part one of this paper, we discuss the basic concepts of temporal optics.     

Ein vereinfachtes Verfahren zur quantitativen Eiweissbestimmung

Ohne ZusammenfassungAus dem chemisch-mikroskopischen Laboratorium von Dr. M. und Dr. Ad. Jolles in Wien.     

Harmonic generation with non collinear laser beams. Application to pulse stacking

Harmonic generation in KDP crystals is of great interest in application to high power Nd laser chains. A non collinear beams technique has been investigated numerically and experimentally. It has been pointed out that an optimum separation angle can be found where tolerance on divergence of one beam is increased. The process provides angular separation of the fundamental and harmonic beams and allows a pulse stacking compression technique, which is described, and which could improve the performances of a laser chain.     

The He(Iα) Photoelectron Spectra of Substituted 1,2-Dithietes

The He(Iα) photoelectron (PE.) spectra of a series of substituted 1,2-dithietes have been recorded and assigned with respect to the orbital sequence derived from an STO-3G model calculation and by correlation with the PE. spectra of related compounds. The results provide additional support for the presence of a closed, four-membered ring moiety in all the 1,2-dithietes investigated. In all cases the two highest occupied molecular orbitals are b₂(π)= HOMO, a₂(π), with exception of 3,4-bis(trifluoromethyl)-1,2-dithiete where the sequence b₂(π), a₂(π) or a₂(π), b₂(π) is uncertain.