Michael Schulz
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View article: Multiply differential study of detachment with simultaneous target excitation in anion-atom collisions
Multiply differential study of detachment with simultaneous target excitation in anion-atom collisions Open
We have measured momenta of electrons and recoil ions in triple coincidence with neutralized projectiles for slow collisions between various anions and target atoms. From the data we extracted triple differential momentum and angular distr…
View article: Momentum imaging of electrons and recoil ions from anion–neutral interactions in a cryogenic ion storage ring
Momentum imaging of electrons and recoil ions from anion–neutral interactions in a cryogenic ion storage ring Open
We have momentum-analyzed electrons and recoil ions in triple coincidence with projectiles neutralized in 300-keV Si−+Ar collisions. The experiment was performed at a cryogenic ion storage ring with an in-ring reaction microscope. Differen…
View article: Spectral fingerprinting of aqueous glucose with ultra-broadband vibrational sum-frequency generation spectroscopy at bio-relevant low concentration
Spectral fingerprinting of aqueous glucose with ultra-broadband vibrational sum-frequency generation spectroscopy at bio-relevant low concentration Open
Vibrational modes of glucose spanning from 900 to 1400 cm −1 in the molecular fingerprint region have been traced by means of vibrational sum-frequency generation spectroscopy in aqueous solution as a function of glucose concentration. The…
View article: Why a System of Three Bosons on Separate Lines Can Not Exhibit the Confinement Induced Efimov Effect
Why a System of Three Bosons on Separate Lines Can Not Exhibit the Confinement Induced Efimov Effect Open
We study a system of three bosons interacting with short-range potentials which can move along three different lines. Two of these lines are parallel to each other within one plane. The third line is constrained to a plane perpendicular to…
View article: Mid-infrared optical parametric chirped-pulse amplifier at 50 W and 38 fs pumped by a high-power Yb-InnoSlab platform
Mid-infrared optical parametric chirped-pulse amplifier at 50 W and 38 fs pumped by a high-power Yb-InnoSlab platform Open
High-power Yb:InnoSlab lasers are proliferating into multiple modern application areas of laser physics ranging from plasma physics and nanolithography to driving optical parametric amplifiers for high-harmonic generation and attosecond sc…
View article: Multiple differential electron spectra from detachment in collisions of 30–300-keV anions with atoms and molecules
Multiple differential electron spectra from detachment in collisions of 30–300-keV anions with atoms and molecules Open
We have measured triple differential momentum distributions for electron detachment in collisions of 30- and 300-keV anions (C− and Si−) with atoms and molecules (He, Ar, and N2). The entire angular range of the ejected electrons was cover…
View article: Results of round robin form measurements of optical aspheres and freeform surfaces
Results of round robin form measurements of optical aspheres and freeform surfaces Open
High-quality aspherical and freeform surfaces are in high demand, and the high-accuracy form measurement of such surfaces is a challenging task. To explore the current status of form measurement systems for complex surfaces such as asphere…
View article: Excitations of N$_{2 }$ and O$_{2}$ molecules due to helium ion impact and a polarization effect
Excitations of N$_{2 }$ and O$_{2}$ molecules due to helium ion impact and a polarization effect Open
We present an experimental study of the dissociative excitation in the collision of helium ions with nitrogen and oxygen molecules for collision energy of $0.7-10$ keV. Absolute emission cross sections are measured and reported for most ni…
View article: The malate shuttle detoxifies ammonia in exhausted T cells by producing 2-ketoglutarate
The malate shuttle detoxifies ammonia in exhausted T cells by producing 2-ketoglutarate Open
The malate shuttle is traditionally understood to maintain NAD + /NADH balance between the cytosol and mitochondria. Whether the malate shuttle has additional functions is unclear. Here we show that chronic viral infections induce CD8 + T …
View article: Correction to: Using the Data Science Process Model Version 1.1 (DASC-PM v1.1) for Executing Data Science Projects: Procedures, Competencies, and Roles
Correction to: Using the Data Science Process Model Version 1.1 (DASC-PM v1.1) for Executing Data Science Projects: Procedures, Competencies, and Roles Open
The sequence of authors was incorrect in the initially published version. It has been corrected.
View article: Interference Effects in Fully Differential Ionization Cross Sections near the Velocity Matching in P + He Collisions
Interference Effects in Fully Differential Ionization Cross Sections near the Velocity Matching in P + He Collisions Open
We performed a fully differential experimental and theoretical study on ionization of He in intermediate-energy collisions with protons for a small projectile coherence length. Data were taken for an ejected electron energy corresponding t…
View article: Caching for dataset-based workloads with heterogeneous file sizes
Caching for dataset-based workloads with heterogeneous file sizes Open
Caching can effectively reduce the cost of serving content and improve the user experience. In this paper, we explore the benefits of caching for existing scientific workloads, taking the Worldwide LHC (Large Hadron Collider) Computing Gri…
View article: Experimental investigations on freeze-drying of particulate matter by using neutron imaging
Experimental investigations on freeze-drying of particulate matter by using neutron imaging Open
This study shows that changing solid content and particle size leads to different inner and outer porosities and thus, leads to different drying properties.These relationships were investigated with neutron imaging by using maltodextrin as…
View article: GLOMON-Monitoringportal for storage, management, advanced processing and intelligent visualization of GNSS- and other sensors data
GLOMON-Monitoringportal for storage, management, advanced processing and intelligent visualization of GNSS- and other sensors data Open
The earth is constantly exposed to endogenous and exogenous forces that cause temporally variable movements and deformations of varying degrees. The Global Monitoring (GLOMON) solution supports the monitoring of infrastructure or large are…
View article: Versatile few-cycle high-energy MID-IR OPCPA for nonlinear optics, spectroscopy and imaging
Versatile few-cycle high-energy MID-IR OPCPA for nonlinear optics, spectroscopy and imaging Open
High-power, high-energy, ultrashort, mid-infrared (MID-IR) laser systems operating at high repetition rates are of considerable interest for many science applications, such as coherent vibrational spectroscopy, label-free imaging, time-res…
View article: Influence of camera temperature on MTF measurements with finite image distance
Influence of camera temperature on MTF measurements with finite image distance Open
Line Spread Function (LSF) based Modulation Transfer Function (MTF) measurements with finite image distance are sensitive to displacement errors in axial direction. Axial displacements between the sample and camera detector cause defocusin…
View article: Electron-impact ionization and ionic fragmentation of O<sub>2</sub>from threshold to 120 eV energy range
Electron-impact ionization and ionic fragmentation of O<sub>2</sub>from threshold to 120 eV energy range Open
We study the electron-impact induced ionization of O 2 from threshold to 120 eV using the electron spectroscopy method. Our approach is simple in concept and embodies the ion source with a collision chamber and a mass spectrometer with a q…
View article: Optical properties of Li-based nonlinear crystals for high power mid-IR OPCPA pumped at 1 µm under realistic operational conditions
Optical properties of Li-based nonlinear crystals for high power mid-IR OPCPA pumped at 1 µm under realistic operational conditions Open
Optical properties of mid-infrared, Li-based nonlinear crystals (NLC) are estimated under realistic experimental conditions for high power lasers using the thermal imaging method.The study focuses on crystals with relatively large aperture…
View article: Resolving the outer ring of HD 38206 using ALMA and constraining limits on planets in the system
Resolving the outer ring of HD 38206 using ALMA and constraining limits on planets in the system Open
HD 38206 is an A0V star in the Columba association, hosting a debris disc first discovered by IRAS. Further observations by Spitzer and Herschel showed that the disc has two components, likely analogous to the asteroid and Kuiper belts of …
View article: Differential Study of Projectile Coherence Effects on Double Capture Processes in p + Ar Collisions
Differential Study of Projectile Coherence Effects on Double Capture Processes in p + Ar Collisions Open
We have measured differential yields for double capture and double capture accompanied by ionization in 75 keV p + Ar collisions. Data were taken for two different transverse projectile coherence lengths. A small effect of the projectile c…
View article: Fully differential study of ionization of H<sub>2</sub> by p impact near velocity matching
Fully differential study of ionization of H<sub>2</sub> by p impact near velocity matching Open
Synopsis Fully differential cross sections (FDCS) for ionization in p + H 2 collisions in the region of the electron-projectile velocity matching were measured and calculated. The FDCS were found to be very sensitive to the details of the …
View article: The Quest to solve the HL-LHC data access puzzle
The Quest to solve the HL-LHC data access puzzle Open
HL-LHC will confront the WLCG community with enormous data storage, management and access challenges. These are as much technical as economical. In the WLCG-DOMA Access working group, members of the experiments and site managers have explo…
View article: Target dependence of post-collision effects in ionization by proton impact
Target dependence of post-collision effects in ionization by proton impact Open
Synopsis Double differential cross sections (DDCS) for ionization in p + Ne, Ar collisions were measured and calculated for a broad range of projectile energy losses as a function of scattering angle. PCI effects in the DDCS were found to …
View article: Projectile Coherence Effects in Simple Atomic Systems
Projectile Coherence Effects in Simple Atomic Systems Open
Recent studies of projectile coherence effects in ion-atom collisions are presented. For intermediate-energy proton collisions an extensive literature provides strong support for the importance of such effects. In this regime coherence eff…
View article: New structures in fully differential cross sections for ionization of He by proton impact
New structures in fully differential cross sections for ionization of He by proton impact Open
Synopsis Fully differential cross sections (FDCS) for ionization in p + He collisions were measured and calcu-lated for several projectile energy losses. The electron angular dependence of the FDCS reveals structures not seen in previous s…
View article: Measurements of excitation cross sections in collisions of $1-10$ keV O$^+$($^4S,^2D,^2P$) with N$_2$ molecules
Measurements of excitation cross sections in collisions of $1-10$ keV O$^+$($^4S,^2D,^2P$) with N$_2$ molecules Open
We report measurements of excitation functions for the O$^{+}-$N$_{2}$ process with the incident beam of $1-10$ keV O$^{+}$ in the ground O$^{+}(^{4}S)$ and metastable O$^{+}(^{2}D)$ and O$^{+}(^{2}P)$ states. The measurements are performe…
View article: Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar
Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar Open
A kinematically complete experiment on two-photon double ionization of Ar by free-electron laser radiation with a photon energy of 27.93 eV was performed. The electron energy spectra show that double ionization is dominated by the sequenti…
View article: Neoclassical Diffusion of Radiation‐Belt Electrons Across Very Low <i>L</i>‐Shells
Neoclassical Diffusion of Radiation‐Belt Electrons Across Very Low <i>L</i>‐Shells Open
In the presence of drift‐shell splitting intrinsic to the International Geomagnetic Reference Field magnetic field model, pitch angle scattering from Coulomb collisions experienced by radiation‐belt electrons in the upper atmosphere and io…