Year-end Sale % OFF 
Abstract
A time of flight MIEZE spectrometer study is presented. The instrument uses solenoid radio frequency (RF) spin flippers with square pole shoes and a magnetic yoke. These flippers can achieve higher static fields than conventional resonant RF spin flippers, which employ an air core. High fields are crucial for the construction of a high resolution and compact MIEZE spectrometer. Using both types of flippers two MIEZE spectrometer configurations are constructed and compared on the same beam line. It was demonstrated that the pole shoe/solenoid coil RF flippers can achieve a MIEZE signal, which is similar in quality to the conventional reference setup. The highest obtained modulation frequency was 100 kHz.
Highlights
Modulated IntEnsity by Zero Effort (MIEZE) is a polarised neutron spin echo technique, used to measure quasi-elastic scattering [1,2,3,4,5]
It was demonstrated that the pole shoe/solenoid coil radio frequency (RF) flippers can achieve a MIEZE signal, which is similar in quality to the conventional reference setup
The maximal achievable phase difference between the two spin states at the sample determines the resolution of the spectrometer known as the spin echo time [6]
Summary
Modulated IntEnsity by Zero Effort (MIEZE) is a polarised neutron spin echo technique, used to measure quasi-elastic scattering [1,2,3,4,5]. As a result the phase difference between the two states will diminish as the neutrons approach the focus point where they are measured (figure 1, adapted from reference 3). This allows one to place the sample after all the spin manipulation components, including the analyser. When an inelastic scattering event takes place between the last NRSE coil and the detector the two spin states will arrive at the detector slightly out of phase and the amplitude of the intensity modulation will decrease. The maximal achievable phase difference between the two spin states at the sample determines the resolution of the spectrometer known as the spin echo time [6]. The RF fields are modulated using a 1/t function; this ensures that the flippers flip the entire bandwidth of a pulsed beam [8]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
