Optimization strategies and artefacts of time-involved small angle neutron scattering experiments

Abstract

Kinetic small-angle neutron scattering provides access to the microscopic properties of mesoscale systems under slow, periodic perturbations. By interlocking the phases of neutron pulse, sample modulation, and detector signal, so-called Time-Involved Small Angle Neutron scattering Experiments (TISANE) allow to exploit the neutron velocity spread and record data without major sacrifice in intensity at time-scales down to micro-seconds. We review the optimization strategies of TISANE that arise from specific aspects of the process of data acquisition and data analysis starting from the basic principles of operation. Typical artefacts of data recorded in TISANE due to the choice of time-binning and neutron chopper pulse width are illustrated by virtue of the response of the skyrmion lattice in MnSi under periodic changes of the direction of the magnetic field stabilizing the skyrmion lattice.

References in corpus (7)

• Skyrmion Lattice in a Chiral Magnet
• Emergent electrodynamics of skyrmions in a chiral magnet
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Rotating skyrmion lattices by spin torques and field or temperature gradients
• Long-range crystalline nature of the skyrmion lattice in MnSi
• Kinetic small angle neutron scattering of the Skyrmion lattice in MnSi
• Time Resolved Stroboscopic Neutron Scattering of Vortex Lattice Dynamics in Superconducting Niobium