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The Relation Between the Phase of the Electron Wave (Which is Lost When an Em Image is Recorded) and the Preserved Crystallographic Structure Factor Phases

Published online by Cambridge University Press:  02 July 2020

Sven Hovmöller  and
Xiaodong Zou
Sven Hovmöller
Affiliation:
Structural Chemistry, Stockholm University, S-106 91 Stockholm, Sweden e-mail xlink:href="[email protected]">[email protected]
Xiaodong Zou
Affiliation:
Structural Chemistry, Stockholm University, S-106 91 Stockholm, Sweden e-mail xlink:href="[email protected]">[email protected]
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Extract

The phase problem in X-ray crystallography is one of the most interesting and most studied mathematical problems that exist. There is still today no general solution of the phase problem, but partial solutions have resulted in at least 8 Nobel Prizes, even though one of the most prominent solutions, the Patterson function, was not awarded the Prize.

It has frequently been claimed that there should be a phase problem also in electron microscopy. It may be more correct to say that there is no phase problem, only a phase confusion problem in electron microscopy. The phase confusion problem has arisen since the word phase is used for (at least) two very different physical entities in the field of electron microscopy. When crystallographers speak about phases, they mean the crystallographic structure factor phases, while physicists mean the wave front phases. In order to resolve the phase confusion problem, it is necessary to define clearly which phases are meant.

Type
Electron Crystallography; The Electron Phase Problem
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 1027 - 1028
Copyright
Copyright © Microscopy Society of America 1997

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References

1. Van Dyck, D. and de Beeck, M.Scanning Microscopy Supplement 6(1992)115.Google Scholar

2. Zou, X.D.. Chem. Commun. 5, Stockholm University Ph.D thesis (1995).Google Scholar

3. Brite Euram Project No. BE-3322, Ultramicroscopy 64(1996) Entire volume.Google Scholar

4. Zou, X.D.et al.Ultramicroscopy 62(1996)103.CrossRefGoogle Scholar

5. Weirich, T.et al.Nature 382(1996)144.CrossRefGoogle Scholar