Oscillatory magnetic fields for neutron resonance spin-echo spectroscopy. (15th February 2021)

• Record Type: Journal Article
• Authors: Jochum, J K; Hecht, A; Soltwedel, O; Fuchs, C; Frank, J; Faulhaber, E; Leiner, J C; Pfleiderer, C; Franz, C
• Is Part Of: Measurement science & technology. Volume 32:Number 4(2021)
• Publication Date: 2021-02-15
• Subjects: neutron spectroscopy -- neutron resonance spin-echo -- MIEZE -- resonant circuits; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/abce3b
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: The generation of high frequency oscillatory magnetic fields represents a fundamental component underlying the successful implementation of neutron resonant spin-echo spectrometers, a class of instrumentation critical for the high-resolution extraction of dynamical excitations (structural and magnetic) in materials. In this paper, the setup of the resonant circuits at the longitudinal resonant spin-echo spectrometer RESEDA is described in comprehensive technical detail. We demonstrate that these circuits are capable of functioning at frequencies up to 3.6 MHz and over a broad bandwidth down to 35 kHz using a combination of signal generators, amplifiers, impedance matching transformers, and a carefully designed cascade of tunable capacitors and customized coils.