Primary extinction - Revision history

BrianMcMahon: Tidied translations and added German and Spanish (U. Mueller)

2017-11-17T10:06:50Z

Tidied translations and added German and Spanish (U. Mueller)

BrianMcMahon at 11:55, 22 May 2017

2017-05-22T11:55:35Z

BrianMcMahon at 11:54, 22 May 2017

2017-05-22T11:54:52Z

BrianMcMahon: Edits to align with printed edition

2017-05-16T13:22:59Z

Edits to align with printed edition

MassimoNespolo: Ja

2015-03-20T13:22:48Z

MassimoNespolo: links

2008-12-21T21:53:11Z

links

MassimoNespolo: link

2008-12-21T18:34:40Z

link

MassimoNespolo at 18:17, 21 December 2008

2008-12-21T18:17:32Z

New page

<Font color="blue">Extinction primaire</Font> (''Fr''). <Font color="black">Estinzione primaria </Font>(''It'').

The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic]] crystal. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of λ/4 = π/2 so that along each direction waves differing by an even number of scattering, ''i''.''e''. by nπ in phase, interfere, whose intensity decreasing rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the kinematical theory.

[[Category:X-rays]]

← Older revision		Revision as of 10:06, 17 November 2017
Line 1:		Line 1:
−	<~~Font~~ color="blue">Extinction primaire</~~Font~~> (''Fr''). <~~Font~~ color="black">Estinzione primaria </~~Font~~>(''It''). <~~Font~~ color="purple">１次消衰効果</~~Font~~> (''Ja'').	+	<font color="blue">Extinction primaire</font> (''Fr''). <font color="red">Primärextinktion</font> (''Ge''). <font color="black">Estinzione primaria </font>(''It''). <font color="purple">１次消衰効果</font> (''Ja''). <font color="green">Extinción primaria</font> (''Sp'').

@@ Line 7: / Line 7: @@
 ==See also==
 *[[Secondary extinction]]
 [[Category:X-rays]]

@@ Line 4: / Line 4: @@
 The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic crystal]]. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of &lambda;/4 = &pi;/2 so that along each direction waves differing by an even number of scattering, ''i.e.'' by ''n''&pi; in phase, interfere, whose intensity decreases rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the [[kinematical theory]].
-The effect is described by the dynamical theory, which shows that the diffracted intensity by a crystal ''p'' planes thick is proportional to (tanh ''pq''/''pq''), where ''q'' is the amplitude diffracted by a single plane.
+The effect is described by the dynamical theory, which shows that the diffracted intensity by a crystal ''p'' planes thick is proportional to (tanh ''pq'')/''pq'', where ''q'' is the amplitude diffracted by a single plane.
 ==See also==

@@ Line 1: / Line 1: @@
-<Font color="blue">Extinction primaire</Font> (''Fr''). <Font color="black">Estinzione primaria </Font>(''It''). <Font color="purple">１次消衰効果</Font> (''Ja'')
+<Font color="blue">Extinction primaire</Font> (''Fr''). <Font color="black">Estinzione primaria </Font>(''It''). <Font color="purple">１次消衰効果</Font> (''Ja'').
-The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic crystal]]. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of &lambda;/4 = &pi;/2 so that along each direction waves differing by an even number of scattering, ''i''.''e''. by n&pi; in phase, interfere, whose intensity decreasing rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the [[kinematical theory]].
+The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic crystal]]. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of &lambda;/4 = &pi;/2 so that along each direction waves differing by an even number of scattering, ''i.e.'' by ''n''&pi; in phase, interfere, whose intensity decreases rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the [[kinematical theory]].
 ==See also==
-[[Secondary extinction]]
+*[[Secondary extinction]]
 [[Category:X-rays]]

← Older revision		Revision as of 13:22, 20 March 2015
Line 1:		Line 1:
−	<Font color="blue">Extinction primaire</Font> (''Fr''). <Font color="black">Estinzione primaria </Font>(''It'').	+	<Font color="blue">Extinction primaire</Font> (''Fr''). <Font color="black">Estinzione primaria </Font>(''It''). <Font color="purple">１次消衰効果</Font> (''Ja'')
		+

	The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic crystal]]. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of λ/4 = π/2 so that along each direction waves differing by an even number of scattering, ''i''.''e''. by nπ in phase, interfere, whose intensity decreasing rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the [[kinematical theory]].		The '''primary extinction''' is responsible for the loss of intensity due to dynamic effect inside every block of a [[mosaic crystal]]. At the Bragg angle, each incident wave can undergo multiple reflections from different atomic planes; each scattering introduced causes a phase difference of λ/4 = π/2 so that along each direction waves differing by an even number of scattering, ''i''.''e''. by nπ in phase, interfere, whose intensity decreasing rapidly with the number of scatterings. Because of the decrease in intensity of waves multiply scattered, the effect of waves differing by more than two scatterings can normally be neglected: in each direction one observes then the destructive interference between waves having a significant difference in intensity and an overall reduction of the intensity with respect to the intensity given by the [[kinematical theory]].