Note, there are two types of publications here, fully peer-reviewed journal publications and conference papers. Nevertheless, most of the presented conference papers have been critically reviewed as well. As a matter of fact, my dissemination channels are targeting a specific audience from different industrial sectors: steel production and nuclear detection. Industrial algorithms used within such competing market environments are often a critical piece of intellectual property and consequently not every detail can be published. If you would like to get in touch with me regarding the presented topics, please write an email to marcus.neuer(at)mndevelopments.de or marcus.neuer(at)bfi.de.
M. J. Neuer, Medizin & Technik, VDI, Februar 2018 (in German)
M. J. Neuer, Proc. IEEE Nuclear Science Symposium and Medical Imaging Conference 2017, Atlanta, US
M. J. Neuer, E. Jacobs, C. Henke, Proc. IEEE Nuclear Science Symposium and Medical Imaging Conference 2017, Atlanta, US
M. J. Neuer, M. Loos, D. Sonnenschein, J. Polzer, Werkstoffwoche2017, Dresden, translated title, publication language was German
M. J. Neuer, A. Ebel, J. Brandenburger, J. Polzer, M. Loos, N. Holzknecht, H. Peters, Stahl und Eisen, July 2017, translated title, publication language was German
M. J. Neuer, N. Holzknecht, A. Ebel, J. Brandenburger, Proc. ESTAD2017, Vienna
M. J. Neuer, M. Loos, D. Sonnenschein, J. Polzer, Proc. ESTAD2017, Vienna
M. J. Neuer, A. Ebel, F. Marchiori, N. Holzknecht, J. Brandenburger, Proc. ESTAD 2017, Vienna
Francesca Marchiori, Alberto Belloni, Michele Benini, Silvia Cateni, Valentina Colla, Alexander Ebel, Marco Lupinelli, Gianluca Nastasi, Marcus Neuer, Costanzo Pietrosanti and Antonella Vignali, Energy Procedia, Nov. 2016
Marcus J. Neuer, Moritz Loos, Detlef Sonnenschein and Jan Polzer, Surface Inspection Summit (SIS2016), 28th-29th Sept. 2016
Marcus J. Neuer (BFI), Francesca Marchiori (CSM), Alexander Ebel (BFI), Nikolaos Matskanis (CETIC), Luca Piedemonti (CSM), Andreas Wolff (BFI) and GaelMathis (ArcelorMittal), Proceedings of the 17th IFAC Symposium on Control, Optimization and Automation in Mining, Mineral and Metals Processing, Vienna, 2016
Marcus J. Neuer (BFI), Alexander Ebel (BFI), Andreas Wolff (BFI), Francesca Marchiori (CSM), Nikolaos Matskanis (CETIC), Martin Rößiger (SIEMENS) and Gael Mathis (ArcelorMittal), Stahl & Eisen 11 / 2015
Marcus J. Neuer, Elmar Jacobs, IEEE Nuclear Science Symposium and Medical Imaging Conference 2015, San Diego
Elmar Jacobs, Christian Henke, Frank Lück, Norbert Link and Marcus J. Neuer, IEEE Nuclear Science Symposium and Medical Imaging Conference 2015, San Diego
Part III of a paper series on cognitive filtering
Marcus J. Neuer, Christian Henke and Elmar Jacobs, ArchivX, Preprint of a conference publication at the IEEE NSS-MIC 2016
Marcus J. Neuer, Alexander Ebel, Andreas Wolff, Francesca Marchiori, Martin Rößiger, Nikos Matskanis and Gael Mathis, European Steel Technology and Application Days (ESTAD), Düsseldorf, 2015 , Publication from the EU-RFCS project I2MSTEEL, a collaboration of Centro Sviluppo Materiali (CSM, Italy), Siemens (Germany), Cetic (Belgium), VDEh-Betriebsforschungsinstitut (BFI, Germany) and ArcelorMittal (France)
Marcus J. Neuer, Nikolai Teofilov, Yong Kong and Elmar Jacobs, IEEE Nuclear Science Symposium and Medical Imaging Conference 2014, Seattle
Elmar Jacbos, Christian Henke and Marcus J. Neuer, IEEE Nuclear Science Symposium and Medical Imaging Conference 2014, Seattle
Part II of a paper series on cognitive filtering
Abstract: The shape of the nuclear signal from scintillators contains information about the detection material from which it originated and its current temperature. A digital filter for this type of signals is presented that automatically extracts both of these pieces of information from the shape of the signals and controls the temperature dependency of the resolution by continuous adaption to this shape. Hereby, nuclear signals are a-priori modelled by an all-pole filter. The concept combines a deconvolution approach based on this model with a least-mean-squares iteration. Beneath the iteration, there is a continuous assessment of the signal shape where the mean-squared distance between the assumed shape and measured shape acts as control parameter for the resolution. From the information stored inside the dynamic filter parameters, the material characteristics are retrieved to identify the detector material. An
implementation into a multi-channel-analyser is shown and the technique is verified under real-world environmental conditions.
Marcus J. Neuer, Nuclear Instruments and Methods in Physics Research A, Volume 728, p. 73-80, 2013
A technique for the spectral identification of strontium-90 is shown, utilising a Maximum-Likelihood deconvolution. Different deconvolution approaches are discussed and summarised. Based on the intensity distribution of the beta emission and Geant4 simulations, a combined response matrix is derived, tailored to the β- detection process in sodium iodide detectors. It includes scattering effects and attenuation by applying a base material decomposition extracted from Geant4 simulations with a CAD model for a realistic detector system. Inversion results of measurements show the agreement between deconvolution and reconstruction. A detailed investigation with additional masking sources like 40K, 226Ra and 131I shows that a contamination of strontium can be found in the presence of these nuisance sources. Identification algorithms for strontium are presented based on the derived technique. For the implementation of blind identification, an exemplary masking ratio is calculated.
Marcus J. Neuer, Yong Kong, Ralf Lentering, Jürgen Stein, Patent, Pub. No.: WO/2012/072103, Int. App. No.:PCT/EP2010/068448
Cristina Plettner, Falko Scherwinski, Guntram Pausch, Ralf Lentering, Yong Kong, Achim Kreuels, Marcus Neuer and Jürgen Stein in Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), Anaheim, 2012
Yong Kong, Guntram Pausch, Katja Roemer, Marcus Neuer, Cristina Plettner, Ralf Lentering and Jürgen Stein, Nuclear Science Symposium Conference Record (NSS/MIC), Knoxville, 2010
Yong Kong, Guntram Pausch, Katja Roemer, Achim Kreuels, Claus Herbach, Marcus Neuer, Ralf Lentering and Jürgen Stein, IEEE Transactions on Nuclear Science, Volume 57, Issue 3, 2010
Marcus J. Neuer, Kai Ruhnau, Arne Ruhnau, Ralf Lentering, Guntram Pausch, Frank Platte and Jürgen Stein, Nuclear Science Symposium Conference Record (NSS/MIC), Dresden, 2008
Abstract: A detection systems is presented that involves multiple autonomous detectors, which are merged to a net like structure. Each unit is equipped with a stabilized and linearized multichannel analyzer for the measurement of gamma spectra and optionally a He3 neutron detector. The flexible hard- and software architecture allows the simple integration of a variable number of detectors, even with different volumes. With this technique, spectroscopical screening of large areas, e.g. airports or comparably sensitive objects, can be established by an individual combination of these detectors. The general outline of the nuclide identification algorithm is presented. In the context of medical isotopes, the importance of correct reference data that incorporates the scattering effects of human bodies is clarified. A special focus is drawn to the localization of nuclear sources. The model, corresponding simulations and its applications are depicted. Different tests and verification measures are described that refer to the nuclide identification and the source localization as well as to the spectral quality of the detectors. A finished real application is presented that combines the tested algorithms and has proven its reliability on different occasions.
Marcus Neuer and Karl-H. Spatschek, AIP Physics of Plasmas 15, 022304, 2008
The motion of charged particles in a plasma with stochastic magnetic field lines is investigated on the basis of the so-called A-Langevin equation. In contrast to the well-known perpendicular (to an external magnetic field)transport here the parallel transport is considered. The two cases of a strong guiding field and a weak mean magnetic field respectively are investigated. The A-Langevin equation is solved under the assumption that the Lagrangiancorrelation function for the magnetic field fluctuations is related to the Eulerian correlation function (in Gaussian form) via the Corrsin approximation. The latter is justified for small Kubo numbers. Generalizations to large Kubo numbers are discussed. It is shown that the magnetic field fluctuations are the source of diffusive motion along a strong guiding field even if binary collisions are absent. The case of small (or vanishing) mean fields is also investigated in the quasilinear limit. An effective collision frequency is derived which is consistent with the result for perpendicular quasilinear diffusion in strong guiding fields. The analytical results are checked by numerical simulations of the A-Langevin equation.
Marcus Neuer and Karl-H. Spatschek, Physical Review E 74, 036401, 2006
Abstract: For stochastic magnetic flux functions with percolative contours the test particle transport is investigated. The calculations make use of the stochastic Liouville approach. They start from the so-called A-Langevin equations, including stochastic magnetic field components and binary collisions. Using the decorrelation trajectory method, a relation between the Lagrangian velocity correlation function and the Eulerian magnetic field correlation is derived and introduced into the Green-Kubo formalism. Finite Larmor radius effects are included. Interesting results are presented in the percolation regime corresponding to high Kubo numbers. Previous results are found to be limiting cases for small Kubo numbers. For different percolative scenarios the diffusion is analyzed and strong influences of the percolative structures on the transport scaling are found. The finite Larmor radius effects are discussed in detail. Numerical simulations of the A-Langevin equation confirm the semianalytical predictions.
Marcus Neuer and Karl-H. Spatschek, Physical Review E 73, 026404, 2006
Marcus Neuer, Dissertation, Heinrich-Heine-Universität Düsseldorf, 2004
Abstract: Anomalous transport of charged particles in a collisional stochastic plasma is investigated on the basis of the A-Langevin equation. The latter is a stochastic differential equation describing the motion of a particle that experiences collisions and a stochastic magnetic field. Contrary to previously used guiding center models, here finite Larmor radius effects are taken into account. Two different approximation methods are applied to obtain the Lagrangian velocity correlation function from the solution of the A-Langevin equation, distinguished in terms of a dimensionless parameter called the Kubo number, which measures the degree of magnetic turbulence. The first one, the Corrsin approximation, is a widely used straightforward technique to relate the Lagrangian correlation, which is determined in the co-moving frame of reference, with the common, spatially dependend Eulerian correlation. Differential equations for the mean square diplacement and the diffusion coefficient are obtained from the Green-Kubo formalism. The quasilinear limit is discussed and estimates for the Larmor radius effects are presented. The well-known Rechester-Rosenbluth regime is derived and the influence of the Larmor radius is discussed in detail...
Marcus Neuer, Zhonghao Li and Karl-H. Spatschek, Physical Review E 70, 056605, 2004
Abstract: Nonlinear chirped pulse solutions are shown to exist as stable attractors for short light pulses in driven and damped systems. The attractors are determined for systems of different complexity, from simple gain and damping modelings up to the inclusion of higher-order dispersion, Raman processes, and delayed nonlinear responses. The chirped attractors, their stability, as well as the attractor basins can be determined analytically. The analytical predictions are in excellent agreement with numerical simulations.