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

Area of Science:

• Materials Science
• Condensed Matter Physics
• Neutron Scattering

Background:

• Kinetic small-angle neutron scattering (kSANS) probes microscopic properties of mesoscale systems under periodic perturbations.
• Time-resolved neutron scattering techniques are crucial for understanding dynamic processes.

Purpose of the Study:

• To review optimization strategies for Time-Involved Small-Angle Neutron Scattering (TISANE) experiments.
• To detail data acquisition and analysis improvements for TISANE.
• To illustrate TISANE artifacts using a specific material system.

Main Methods:

• Interlocking neutron pulse, sample modulation, and detector signals in TISANE.
• Exploiting neutron velocity spread for high-time-resolution data acquisition.
• Analyzing TISANE data, considering time binning and chopper pulse width effects.

Main Results:

• TISANE allows data collection at microsecond timescales with minimal intensity loss.
• Identified typical data artifacts in TISANE related to experimental parameters.
• Demonstrated the response of a skyrmion lattice in MnSi to magnetic field changes using TISANE.

Conclusions:

• Optimized TISANE protocols enhance the study of dynamic mesoscale phenomena.
• Understanding TISANE artifacts is critical for accurate data interpretation.
• TISANE is a powerful technique for investigating magnetic materials like MnSi.