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Professor ray Freeman, a famous NMR spectrometer, died at the age of 90

On May 1, 2022, ray Freeman, a famous British chemist, a member of the Royal Society, a nuclear magnetic resonance spectrometer and an honorary professor of Jesus College of Cambridge University, died at the age of 90 (January 6, 1932 – May 1, 2022).

Professor Freeman devoted his whole life to the research of nuclear magnetic resonance spectroscopy, promoted nuclear magnetic resonance to become an important analytical technology, and made important contributions to the development of nuclear magnetic resonance instruments and equipment.

Freeman spent most of his undergraduate career at Oxford University, studying chemistry under Professor Rex Richards and working on very useful nuclei in his research team(fifty-nineCO) and obtained master’s and doctor’s degrees.

In 1957, Freeman joined the nuclear magnetic resonance research group of Anatole abragam in France, completed the post doctoral research work with him, and developed a stable high-resolution nuclear magnetic resonance spectrometer under the guidance of Professor Robert pound, a pioneer of nuclear magnetic resonance. Freeman then worked in the basic physics department of the National Physical Laboratory (NPL) in Teddington, London for three years.

In 1961, Freeman and Wes Anderson joined Varian associates in Palo Alto, California, USA, engaged in the research of double resonance, double quantum effect, spin lattice relaxation and Fourier transform, and assisted in the development of Varian nuclear magnetic resonance spectrometer (xl-100 and cft-20).

In 1973, Freeman returned to Oxford as a lecturer and a researcher at Magdalene College, and formed his own research team to focus on high-resolution NMR technology. Many new methods of two-dimensional NMR, selective excitation and broadband decoupling have been developed. These methods are still widely used in NMR laboratories all over the world. Based on his important role in nuclear magnetic resonance technology and its chemical applications, Freeman was elected a member of the Royal Society in 1979 and awarded the Royal medal in 2002.

In 1987, Freeman transferred to Cambridge University as the chair professor of NMR plummer, and continued his research on NMR methods until he retired in 1999. But for a long time after his retirement, he still actively participated in cooperative research and continued to publish articles until he was in his 80s. Freeman has written three Monographs on magnetic resonance, including a handbook of magnetic resonance, spin choreography:basic steps in high resolution NMR, magnetic resonance in chemistry and medicine.

Professor Freeman is also an excellent communicator and a”Star” active in MRI meetings. His report has a unique style. He will add his own hand-painted pictures to the slides to explain the problems, and talk about a few humorous passages from time to time, mixed with a few self jokes, which makes everyone laugh. He is also a good teacher and friend loved by students. Many of his students have achieved great success in their research field and become famous scientists in the field of magnetic resonance, such as Dr. Ad. Bax of the National Institutes of health, Professor James Keeler of the University of Cambridge, Professor GA. Morris of Manchester University, Professor Geoffrey Bodenhausen of Paris Normal University, Professor Malcolm Levitt of University of Southampton, etc.

This man has gone and his spirit will last forever. Professor ray Freeman, go all the way!