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- From: nuke@reed.edu (Bill Newcomb)
- Subject: Re: XRAY diffraction of C60 CRISTAL
- References: <39051@sophia.inria.fr>
- Organization: Reed College, Portland, OR
- Date: Thu, 21 Jan 1993 17:39:50 GMT
- Message-ID: <1993Jan21.173950.7622@reed.edu>
- Lines: 27
-
- laurent@cenerg.cma.f writes:
- >Some studies have been carried out on X ray characterization
- >of C60 cristal:
-
- >1 - What does an X ray diffraction spectrum of C60 cristal
- >look like ?
-
- A bunch of dots, I'm sure. Almost all diffraction patterns do (well,
- powder patters look like a bunch of circles, but I assume you mean single
- crystal). It's somewhat straightforward to get the structure from that dot
- pattern, but only very rough features can be gotten from jsut looking at
- the pattern.
-
- >2 - Because caracteristic dimension of the cristal grid is
- >about 10 nm why using X ray ? Wouldn't it be better
- >to use greater wave length ?
-
- You might use 10nm light if you only wanted to know how the speres were
- packed. With x-rays, you stand a good chance of being able to tell where
- individual atoms are, thus gaining a great deal of information.
-
- It'd be neat to see an ortep diagram of the ball.
-
- Bill Newcomb
-
- --
- ~/.oo
-