Dear all,
I too have posed style similar questions to Arnt Kern at Bruker.
He pointed me to amongst other sources Wikipedia for a general
background in this topic.
However Im still keen to get a better understanding of
use/parameterisation within Topas and I too welcome any contributions to
this
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Dear All,
Anyone knows about capillaries giving a distinctly lower background than the
ones (borosilicate)
I presently use? Your suggestions on materials and where to get them are
welcome. best regards Natale Perchiazzi
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Hi Xiujun Tim,
while I am not familiar with the texture analysis offered in Topas, I can
offer a few hopefully useful hints.
- The texture index is a number that is 1 for a perfectly random sample and
infinity for a single crystal. A weak texture would have an index between say
1 and 1.5, a
dear Natale,
BTW, did you ever make a chemical analysis of your capillaries?
I tried once, and as far as I remember, I remained with the terrible doubt that
it was just bottle glass...
An alternative are CA (cellulose acetate) capillaries which really contain only
first row elements and can
Hi Xiujun
Topas implements a normalized symmetrized sperical harmonics function, see
Jarvine
J. Appl. Cryst. (1993). 26, 525-531
http://scripts.iucr.org/cgi-bin/paper?S0021889893001219
The expansion is simply a series that is a function hkl values.
The series is normalized
