Development Of A Liquid-state Zero-field Nuclear Magnetic Resonance Spectrometer Based On SERF Atomic Magnetometer

Liquid-state zero-field nuclear magnetic resonance is an experiment method de-veloped in the past few years.Because of the ability to realize high-resolution coupling parameter measurement without the use of superconducting magnet,it has been demon-strated to be promising for applications in several fields such as chemical analysis,and is also possible to become a new platform for quantum simulation.This dissertation introduces the basic principles,hardware composition and op-erating mode of the zero-field nuclear magnetic resonance spectrometer developed by the author and his colleagues,and shows the commonly used test methods in the ap-paratus testing.One of the key components of the spectrometer is the rubidium SERF magnetometer working as the detector,so it is heavily discussed in this dissertation.Af-ter the testing,it is confirmed that the pressure broadening,temperature and relaxation parameters of the atoms are all close to theoretical expectations,and is also verified that the atoms work in the SERF regime.The sensitivity of the magnetometer is below 18 fT/Hz1/2 from 20 Hz to 300 Hz,which is enough for zero-field nuclear magnetic res-onance detection.And through measurement of the nuclear magnetic resonance spec-trum of the samples,it is also proved that the status of the nuclear spins can be controlled by magnetic field as expected and the signal-to-noise ratio of the spectrum can be high enough.In addition,I dominated the development of the software programs used in the experiment,which is based on the Python programming language and implemented the commonly used instrument control and data processing functions,an application that covers the current requirements of commonly used experiments and a number of scripts for the measurement of magnetometer parameters.