131.111.16.20: /* Definition */

2013-12-06T01:17:04Z

Definition

← Older revision		Revision as of 03:17, 6 December 2013
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	~~Nice to satisfy you~~, ~~my name~~ is ~~Numbers Held though I don't really like being known as like~~ that~~. Years in~~ the ~~past we moved~~ to ~~North Dakota and I adore each day living here~~. ~~Doing ceramics~~ is ~~what her family members and her enjoy. For many years I've been working as~~ a ~~payroll clerk.~~<br><br>~~Also visit my weblog :: [http:~~//~~chatbook~~.~~biz~~/~~blogs~~/~~post~~/~~922 http:~~//~~chatbook~~.~~biz/blogs/post/922~~]		{{Use dmy dates\|date=August 2013}}
			{{Unreferenced stub\|auto=yes\|date=December 2009}}
			'''Charge-carrier density''' denotes the number of [[charge carrier]]s per [[volume]]. It is measured in m<sup>−3</sup>. As any [[density]] it can depend on position.
			It should not be confused with the [[charge density]], which is the number of charges per volume at a given energy.

			The carrier density is obtained by [[integral\|integrating]] the charge density over the energy that the charges are allowed to have.

			Charge-carrier density is a [[particle density]], so [[integral\|integrating]] it over a volume <math>V</math> gives the number of charge carriers <math>N</math> in that volume

			<math>N=\int_V n(\mathbf r) \,\mathrm{d}V</math>.

			where
			:<math>n(\mathbf r)</math> is the position-dependent charge-carrier density.

			If the density does not depend on position and is instead equal to a constant <math>n_0</math> this equation simplifies to

			<math>N=V\cdot n_0</math>.

			Charge-carrier densities involve equations concerning the [[electrical conductivity]] and related phenomena like the [[thermal conductivity]].

			==Measurement==

			The density of charge carriers can be determined in many cases using the [[Hall effect]], the voltage of which depends inversely on the density.

			Such measurements show that the density for silver is around 5.8·10<sup>28</sup> m<sup>−3</sup> or around 1.2 per atom.

			{{DEFAULTSORT:Charge Carrier Density}}
			[[Category:Density]]
			[[Category:Charge carriers]]

			{{Phys-stub}}

151.27.108.223: /* Definition */

2012-02-27T12:09:50Z

Definition

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Nice to satisfy you, my name is Numbers Held though I don't really like being known as like that. Years in the past we moved to North Dakota and I adore each day living here. Doing ceramics is what her family members and her enjoy. For many years I've been working as a payroll clerk.<br><br>Also visit my weblog :: [http://chatbook.biz/blogs/post/922 http://chatbook.biz/blogs/post/922]

Dirichlet density - Revision history

131.111.16.20: /* Definition */

151.27.108.223: /* Definition */