Hello II,
At 09:20 PM 3/28/00 +0200, you wrote:
>On the point of view of theory, can the tube-tails and
>Kalpha3 satellite explanations be reconciled ? No tube-tails
>theory in the most recent X-ray powder Diffractometry book
>from Jenkins and Snyder, only Kalpha1, 2, 3, 4, 5, 6.
I went back to the "tube tails" web site mentioned by J"org Bergmann: Has
anyone done a single crystal rocking curve in an attempt to see these
tails? I have just done one to characterize the emission spectrum (as
transmitted through a graphite post monochromator). I observed no "tube
tails". However, I wasn't looking for them; the crystal was ~27mm in size
and scan range for the Si 400 line was 68-70.5 two-theta and the instrument
(a D5000) was set up with the smallest divergence and receiving slits and
both Soller collimators. These parameters may not be suitable for
observance of any (and all) spurious x-rays from the anode. Some geometric
exercises may be needed to design an experiment such that any radiation
originating from the anode would be diffracted by the single crystal into
an anxious detector. The "Kalpha3" is apparent in this scan and its
incorporation into the emission spectrum used for an FPA will address the
low angle "oddities" shown in the profile of LaB6 (figure a) of the web
site. However; the high angle debris remains a problem.
Regards,
Jim
James P. Cline [EMAIL PROTECTED]
Ceramics Division Voice (301) 975 5793
National Institute of Standards and Technology FAX (301) 975 5334
100 Bureau Dr. stop 8523
Gaithersburg, MD 20899-8523 USA
