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Re: [sdpd] database PDF

Dear Marco,

1- Using the last PDF-2 release, the lines seem correctly plotted on the 
screen (both using the ICDD software and EVA).
2- never seen the u character. Maybe corresponds to unindexed lines with 
the unit cell given by the authors.
3- The quality marks are given following the sequence C, *, I, N, Q, 
D.   C stands for calculated pattern (from single crystal), * is the 
best quality for experimental data, I means indexed, N is non-indexed, Q 
questionable, D are deleted patterns (usually replaced by a more recent 
one).

Best,

Thierry



marco.sommariva...@mater.unimib.it a écrit :

>Dear Crystallographers,
>I have some short questions on powder database PDF-2:
>
>1) with surprise I saw that hardcopies of  files are not
>exactly equal to screen versions, in particular for
>Intensity values reported in the lists; in some cases this
>fact is not really important (e.g. for anatase n° 21-1272,
>there are some little differences, (103) is printed as 10%
>but on screen it should be 14%, (200) is printed as 35% but
>on screen it is 65%); in other cases the difference is
>really strong, as in NiAl26O40 (PDF n° 20-0776), infact
>peak (302) is printed as 20%, but on the screen it is 100%
>(the representation of the profile on the screen is coherent
>with the list on the screen). What is the problem?
>
>2) Does somebody know what is the symbol u printed sometimes
>near Intensity values?
>
>3) What is the Quality legend? I mean, in some files
>Quality=C, I, *, or nothing; what is the meaning?
>
>Thanks in advance, with my best regards,
>
>Marco Sommariva
>
>-------------------------------------
>Marco Sommariva
>Department Of Materials Science
>University Milano-Bicocca
>Via R. Cozzi 53, 20125 Milano (ITALY)
>mail: marco.sommariva...@mater.unimib.it
>phone: 0039.02.64.48.51.41
>-------------------------------------
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 
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>
>
>  
>



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