Untersuchungen zur Charakterisierung eines ICP-Spektrometers mittels Lichtleiterkopplung

Zusammenfassung Für ein ICP-Spektrometer, bei dem ein Quarzlichtleiter die optische Kopplung zwischen dem Plasma und einem Polychromator übernimmt, wurden einige analytische Kenndaten ermittelt. Durch Bestimmung der Nachweisgrenze und des BEC-Wertes einerseits sowie der Festlegung der Plasmaleistung und der Meßhöhe des Lichtleiters andererseits wurden die Zusammenhänge zwischen diesen Größen festgestellt und graphisch dargestellt.

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Investigations for the characterisation of an ICP-spectrometer with coupling by optical quartz fibre

Summary A new simultaneous ICP-spectrometer with a polychromator coupled by an optical quartz fibre with the plasma has been characterized. The power of the plasma source on the one side and the observation height of the optical fibre on the other side were varied and the corresponding detection limits and BEC-values were determined. The correlation of these terms are shown graphically.

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Herrn Prof. Dr. H. Hartkamp zum 60. Geburtstag gewidmet     

A Fast and Efficient Track to Allosteric Modulators of Muscarinic Receptors: Microwave-Assisted Syntheses

By using microwave irradiation bisammonium-and bispyridinium-type allosteric modulators of muscarinic receptors can be obtained fast and efficiently.     

A study of fluctuations and correlations in deep-inelastic muon-nucleon scattering at 280 GeV

Using data of the European Muon Collaboration on muon-proton and muon-deuteron scattering at 280 GeV, an intermittency analysis in one, two and three phase space dimensions is carried out. In addition, a factorial correlator analysis and a multifractal analysis, both in one dimension (rapidity), are presented.     

Observation ofD S ** (2536) meson production by neutrinos in BEBC

Zeitschrift für Physik C Particles and Fields - Neutrino interactions in BEBC produce theD ** (2536) charmed strange meson. The mass of this state is 2534.2±1.2 MeV. The production rate...     

Determination of the ratior v =d v u v of the valence quark distributions in the proton from neutrino and antineutrino reactions on hydrogen and deuterium

Zeitschrift für Physik C Particles and Fields - A set of proton longitudinal polarized distributions, worked out under the assumption of small gluon polarization, is used to evaluate several...     

Multiplicity distribution inK + Al andK + Au collisions at 250 GeV/c and a test of the multiple collision model

Multiplicity distributions, observed inK ⁺ interactions with Al and Au nuclei at 250 GeV/c incident momentum are presented. They are analyzed in the framework of multiple collisions of the incident particle inside a nucleus. The probability distribution of the number of grey tracks is well described by the model of Andersson et al., if a negative binomial distribution is assumed for the distribution of the number of grey protons produced per elementary collision instead of the usual geometrical distribution. The analysis of the average and dispersion of the charge multiplicity distribution supports the validity of the multiple collision model, including results on correlations between forward and backward multiplicities.