Feedback from MLZ (German Neutron Source) User Meeting 2025

[kara-mela]

I had a poster at the MLZ User Meeting recently and asked the people to complement the "sub-graph" of neutron techniques in PaNET by adding sticky notes.

I had an overwhelming amount of 30 comments, which I want to share with you. This is mostly for your information, without any direct action imposed. I try to group the comments for a better overview

New techniques

• scanning positron microscopy
• GISANS = gracing incidence small angle neutron scattering
• half-polarized diffraction (purpose: magnetic susceptibility)
• neutron imaging
  • neutron tomography
  • add relationship to high-resolution neutron imaging
  • neutron diffraction tomography
• TOF neutron diffraction
• neutron Laue diffraction; x-ray Laue diffraction; investigate the actual definitions for x-ray and neutrons, for neutron supposedly a white beam technique
• total neutron diffraction (purpose: determine magnetic structure)
  • PDF (pair distribution function) for powder samples
  • Δ-PDF for single crystals
• time-resolved ...
  • imaging
  • ...
• LARMOR, mainly for single crystals; niche topic for powder samples
  • LARMOR diffraction (high angular resolution)
• MIEZE; subclass of spin echo, TOF; purpose: magnetism
• hot neutron single crystal diffraction
• neutron activation analysis
• diffuse neutron scattering
• neutron spectroscopy
  • triple axis neutron spectroscopy
• spherical neutron polarimetry
• quasi-monochromatic beam (for neutrons) = pink beam (for x-rays)
• transmutation as subclass of manufacturing
  • subclass: neutron activation analysis
  • subclass: prompt gamma activation analysis
• pulsed vs continuous source; pulsed beam can also be produced by continuous source plus chopper

New energies

• hot neutrons; part of epithermal neutrons
• fusion neutrons; purpose: testing material for fusion power
• ultra cold neutrons

Updating Information

• rename spin echo scattering to spin echo spectroscopy
• pulsed neutron TOF is unconnected to other TOF techniques
• neutron powder diffraction unconnected; connect to subclass: high resolution thermal neutron powder diffraction
• spin echo:
  • add relationship to SANS
  • subclass of cold neutron spectrosocpy

Misc

• include particle physics: neutron/antineutron and positron research
• coherence is property of a probe; elasticity is part of scattering; consult HERCULES books
• XFEL vs synchrotron research: same technique, but different nature of information
• neutron imaging is not part of neutron scattering, everything else is