17 research outputs found
Laser-induced splittings in the nuclear magnetic resonance spectra of the rare gases
Circularly polarized laser field causes a shift in the nuclear magnetic
resonance (NMR) spectra of all substances. The shift is proportional to the
intensity of the laser beam and yields oppositely signed values for left- and
right-circularly polarized light, CPL -/+, respectively. Rapid switching -- in
the NMR time scale -- between CPL+ and CPL- gives rise to a splitting of the
NMR resonance lines. We present uncorrelated and correlated quadratic response
calculations of the splitting per unit of beam intensity in the NMR spectra of
Ne, Kr, and Xe. We study both the regions far away from
and near to optical resonance and predict off-resonance shifts of the order
0.01, 0.1, and Hz for Ne, Kr, and Xe,
respectively, for a beam intensity of 10 W/cm. Enhancement by several
orders of magnitude is predicted as the beam frequency approaches resonance.
Only then can the effect on guest Xe atoms be potentially useful as a
probe of the properties of the host material.Comment: 5 pages, 1 figur
An online quality monitoring tool for information acquisition and sharing in manufacturing:Requirements and solutions for the steel industry
The purpose of this study was to develop an innovative online supervisor system to assist the operators of an industrial manufacturing process in discovering new solutions for improving both the products and the manufacturing process itself. In this paper, we discuss the requirements and practical aspects of building such a system and demonstrate its use and functioning with different types of statistical modelling methods applied for quality monitoring in industrial applications. The two case studies presenting the development work were selected from the steel industry. One case study predicting the profile of a stainless steel strip tested the usability of the tool offline, while the other study predicting the risk of roughness of a steel strip had an online test period. User experiences from a test use period were collected with a system usability scale questionnaire.</p