[SI-LIST] Re: Copper atom density
- From: "Grasso, Charles" <Charles.Grasso@xxxxxxxxxxxx>
- To: <esayre3@xxxxxxxx>, <doug@xxxxxxxxxx>
- Date: Sat, 19 Nov 2005 09:35:31 -0700
Hear Hear! Inquring minds want to know.
Can you say what kind of research you're doing??
Best Regards
Charles Grasso
Senior Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell: 303-204-2974
Pager/Short Message: 3032042974@xxxxxxxx
Email: charles.grasso@xxxxxxxxxxxx;
Email Alternate: chasgrasso@xxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ed Sayre III
Sent: Wednesday, November 16, 2005 1:17 PM
To: doug@xxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Copper atom density
Doug,
I you are dealing with single crystalline copper then the volume is
an=20
algebraic expression based on the atomic unit cell. This is derived
from=20
the crystal orientation (ie face centered cubic, body centered cubic,=20
Diamond...etc)
The thing is that copper is not single crystalline in a typical=20
conductor, so I would guess that the density is a bit lower. I would=20
recommend you pull out the old "CRC Handbook of Chemistry and Physics".
I=20
think this will answer all your questions. Also the text by "Ramo,=20
Whinnery and Van Duzer" may also have some material constants as
applied=20
to Electromagnetics
I am curious, why do you need this??? Critical currents density?
Regards
-Ed
At 12:01 PM 11/16/2005 -0800, Doug Brooks wrote:
>I am interested in determining the density of copper atoms per unit
>cross sectional area, i.e. the average number of atoms at the cross
>sectional area of a conductor.
>It is given by various sources that the volumetric density of copper is
>between
>8.37 10^28 and
>8.5 10^28 atoms/meter^3
>
>Is it as simple as taking the 2/3 root of this number (19.3
>10^18/meter^2)? That seems logical but not necessarily realistic. I
>think there is a better answer but I'm not sure how to approach it.
>
>Doug Brooks
>
>_______________________________________________________________________
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