Difference between revisions of "Borrmann effect"
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== History == | == History == | ||
| − | The Borrmann effect was first discovered in quartz [Borrmann, G. (1941). ''Physik Z.'', '''42''', 157-162. ''Über Extinktionsdiagramme der Röntgenstrahlen von Quarz''] and then in calcite crystals | + | The Borrmann effect was first discovered in quartz [Borrmann, G. (1941). ''Physik Z.'', '''42''', 157-162. ''Über Extinktionsdiagramme der Röntgenstrahlen von Quarz''] and then in calcite crystals [Borrmann, G. (1950). ''Z. Phys.'' '''127''', 297-323. ''Die Absorption von Röntgenstrahlen in Fall der Interferenz''], and interpreted by [https://doi.org/10.1107/S0365110X49000242 Laue] [Laue, M. von (1949). ''Acta Cryst.'' '''2''', 106-113. ''Die Absorption der Röntgenstrahlen in Kristallen im Interferenzfall''] . |
| − | The super-Borrmann effect was first observed by Borrmann G. and Hartwig W. (1965) | + | The super-Borrmann effect was first observed by Borrmann, G. and Hartwig, W. [(1965). ''Z. Krist.'' '''121''', 401-409. ''Die Absorption der Röntgenstrahlen im Dreistrahlfall der Interferenz'']. |
=== See also === | === See also === | ||
| − | + | *Chapter 5.1 of ''International Tables for Crystallography, Volume B'' for X-rays | |
| + | *Chapter 5.2 of ''International Tables for Crystallography, Volume B'' for electrons | ||
| + | *Chapter 5.3 of ''International Tables for Crystallography, Volume B'' for neutrons | ||
| − | + | [[Category:X-rays]] | |
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| − | [[Category:X-rays]] | ||
Revision as of 15:16, 12 May 2017
Effet Borrmann (Fr). Borrmann Effekt (Ge). Efecto Borrmann (Sp). Effetto Borrmann (It)
Definition
Due to anomalous absorption, type 1 wavefields propagate in a perfect or nearly perfect crystal with a less than normal absorption. For details and the physical interpretation, see anomalous absorption.
Super-Borrmann effect
It is the enhancement of the Borrmann effect in a three-beam case, e.g. when the [math]111 [/math] and [math]{\bar 1}11 [/math] reflections are simultaneously excited in a silicon or germanium crystal.
History
The Borrmann effect was first discovered in quartz [Borrmann, G. (1941). Physik Z., 42, 157-162. Über Extinktionsdiagramme der Röntgenstrahlen von Quarz] and then in calcite crystals [Borrmann, G. (1950). Z. Phys. 127, 297-323. Die Absorption von Röntgenstrahlen in Fall der Interferenz], and interpreted by Laue [Laue, M. von (1949). Acta Cryst. 2, 106-113. Die Absorption der Röntgenstrahlen in Kristallen im Interferenzfall] .
The super-Borrmann effect was first observed by Borrmann, G. and Hartwig, W. [(1965). Z. Krist. 121, 401-409. Die Absorption der Röntgenstrahlen im Dreistrahlfall der Interferenz].
See also
- Chapter 5.1 of International Tables for Crystallography, Volume B for X-rays
- Chapter 5.2 of International Tables for Crystallography, Volume B for electrons
- Chapter 5.3 of International Tables for Crystallography, Volume B for neutrons