W. Treimer
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View article: On neutron holography, neutron interferometry, and neutron orbital angular momentum
On neutron holography, neutron interferometry, and neutron orbital angular momentum Open
In Opt . Express 24 , 22528 ( 2016 ) 10.1364/OE.24.022528 , D. Sarenac et al. reported neutron holography using a Laue crystal interferometer and a spiral phase plate, interpreting the resulting interference pattern as a hologram reconstru…
View article: On neutron holography, neutron interferometry and neutron orbital angular momentum
On neutron holography, neutron interferometry and neutron orbital angular momentum Open
A neutron Laue crystal interferometer has been reported by Saranac et al . to demonstrate neutron holography of a spiral phase plate. Using its two coherent beams as the object and reference beams, the resulting interference pattern was in…
View article: On the neutron orbital angular momentum: Has it actually been demonstrated?
On the neutron orbital angular momentum: Has it actually been demonstrated? Open
In a Nature LETTER [1], a control of neutron angular momentum was apparently demonstrated using a neutron crystal interferometer. In the meantime, a number of highly interesting articles have been published dealing with the n-OAM and neutr…
View article: Investigation of the thermodynamics of trapped magnetic flux in type-I and type-II superconductors using polarized neutron imaging
Investigation of the thermodynamics of trapped magnetic flux in type-I and type-II superconductors using polarized neutron imaging Open
Polarized neutron imaging was used to observe field cooling (FC) and zero field warming (ZFW) processes in type-I and type-II superconductors. ZFW is an irreversible magnetic process that cannot be described by formulas and therefore it wa…
View article: Special Issue Advances in Neutron Imaging
Special Issue Advances in Neutron Imaging Open
This Special Issue of Applied Sciences, “Advances in Neutron Imaging”, is published at a time when the COVID-19 epidemic is emerging worldwide [...]
View article: Determination of the Spatial Resolution in the Case of Imaging Magnetic Fields by Polarized Neutrons
Determination of the Spatial Resolution in the Case of Imaging Magnetic Fields by Polarized Neutrons Open
One of the most important parameters characterizing imaging systems (neutrons, X-rays, etc.) is their spatial resolution. In magnetic field imaging, the spatial resolution depends on the (magnetic) resolution of the depolarization of spin-…
View article: Study of Possible Frequency Dependence of Small AC Fields on Magnetic Flux Trapping in Niobium by Polarized Neutron Imaging
Study of Possible Frequency Dependence of Small AC Fields on Magnetic Flux Trapping in Niobium by Polarized Neutron Imaging Open
Reducing the size of ambient magnetic flux trapping during cooldown in superconducting radio-frequency niobium cavities is essential to reaching the lowest power dissipation as required for continuous wave application. Here, it is suggeste…
View article: The Neutron Imaging Instrument CONRAD—Post-Operational Review
The Neutron Imaging Instrument CONRAD—Post-Operational Review Open
The neutron imaging instrument CONRAD was operated as a part of the user program of the research reactor BER-II at Helmholtz-Zentrum Berlin (HZB) from 2005 to 2020. The instrument was designed to use the neutron flux from the cold source o…
View article: Visualization of compensating currents in type-II/1 superconductor via high field cooling
Visualization of compensating currents in type-II/1 superconductor via high field cooling Open
The morphology of vortex lattice domains in bulk type-II/1 superconductors is of central interest for many areas such as fundamental condensed matter physics, engineering science, and the optimization of materials for high transport curren…
View article: Investigation of Trapped Magnetic Flux in Superconducting Niobium Samples with Neutron Radiography
Investigation of Trapped Magnetic Flux in Superconducting Niobium Samples with Neutron Radiography Open
The dynamics of flux expulsion in Nb samples during superconducting transition has been investigated with neutron radiography. Aiming at a reduction of the trapped flux with respect to obtaining a small residual resistance it was attempted…
View article: Setup for polarized neutron imaging using <i>in situ</i> 3He cells at the Oak Ridge National Laboratory High Flux Isotope Reactor CG-1D beamline
Setup for polarized neutron imaging using <i>in situ</i> 3He cells at the Oak Ridge National Laboratory High Flux Isotope Reactor CG-1D beamline Open
In the present study, we report a new setup for polarized neutron imaging at the ORNL High Flux Isotope Reactor CG-1D beamline using an in situ 3He polarizer and analyzer. This development is very important for extending the capabilities o…
View article: Investigation of Trapped Magnetic Flux in Superconducting Niobium Samples with Polarized Neutron Radiography
Investigation of Trapped Magnetic Flux in Superconducting Niobium Samples with Polarized Neutron Radiography Open
The dynamics of flux expulsion during superconducting transition and the influence of external AC magnetic fields on expulsion of trapped fields in Nb samples has been investigated with radiography using polarized neu-trons. Results of the…
View article: Erratum: “Phase‐based x‐ray scattering—A possible method to detect cancer cells in a very early stage” [Med. Phys. <b>41</b>(5), 053503 (12pp.) (2014)]
Erratum: “Phase‐based x‐ray scattering—A possible method to detect cancer cells in a very early stage” [Med. Phys. <b>41</b>(5), 053503 (12pp.) (2014)] Open
The authors and affiliations were incorrect in the original paper; however, they are correct above in this erratum. Additionally, Fig. 14 has been replaced below.1 Finally, the Acknowledgments should read as follows: Integrated intensity a…
View article: Calculation of scattering patterns from phase-shifting objects using the Radon transform. Corrigendum
Calculation of scattering patterns from phase-shifting objects using the Radon transform. Corrigendum Open
The affiliations for the authors of J. Appl. Cryst. (2011), 44 , 1157–1163 are corrected.
View article: Role of Temperature on Flux Trap Behavior in < 100 > Pb Cylindrical Sample: Polarized Neutron Radiography Investigation
Role of Temperature on Flux Trap Behavior in < 100 > Pb Cylindrical Sample: Polarized Neutron Radiography Investigation Open
The evolution of flux trap behavior at low temperature (the intermediate state) in high purity Lead samples, both in single crystal with < 100 > orientation and polycrystalline form, is investigated using field cooled (FC) neutron tomograp…