This allows for variants in combination with triple axes spectrometers to resolve narrow linewidth of excitations or MIEZE (Modulation of IntEnsity with Zero Effort) for depolarizing conditions and incoherent scattering which are not possible with conventional NSE.
The classical NSE technique (Figure 1. a)), relies upon the Lamor precession the neutron spin undergoes, while flying through static magnetic fields.
[8] The drawbacks mentioned above lead to the development of the longitudinal NRSE (L-NRSE, Figure 1. d)) design to combine the advantages of both classical NSE and T-NRSE.
This makes the mu-metal shielding required for transverse NRSE obsolete and facilitates maintaining the polarization of neutrons with large wavelengths λ.
This makes it possible to tilt the RF flipper coils and perform NRSE in a triple axis spectrometer configuration.
Therefore, this technique allows the investigation of linewidths of dispersing excitations, including both phonons and magnons, over the entire Brillouin zone.
To circumvent these drawbacks the MIEZE (Modulation of IntEnsity with Zero Effort) method was introduced in transverse as well as longitudinal configuration (Figure 1. c) and e)).