Re: Scott A. Howard

2001-01-18 Thread Frank L. May
Dr. Scott Howard has left the field. He left XRD to pursue a new career path in the field of programming for confocal microscopy. To Ownby: check with Dr. Mark Shumsky, a colleague of yours at University of Missouri - Rolla. Good luck, Frank May Research Investigator University of Missouri -

Re: Natrite - Na2 CO3

2000-11-16 Thread Frank L. May
My further thought on this thread about publishing copyrighted material is that anyone who flagrantly says "here are the ICSD entries for ..." is welcoming a visit from the authorities. Both the person and that person's employer may be liable to civil penalties. I'm not a lawyer, but I do read t

Re: Natrite - Na2 CO3

2000-11-12 Thread Frank L. May
To all - I've watched this thread develop and now find that I must put in my 2-cents worth (not worth much these days). In all areas of the criminal justice system in the jurisdiction in which I reside, it is just as much a crime to solicit illegal behavior as to actually commit it. Name the cr

Re: aniso. broadening

1999-11-11 Thread Frank L May
Regarding the conditions given by Phil Lightfoot -- The crystal class is really orthorhombic (only pseudo-tetragonal) so one should not expect the [h 0 l] and [0 k l] classes of reflections to exhibit the same degree of anisotropic broadening. Question: Has the powder pattern been acquired o

Re: Some linear absorption coefficients

1999-10-20 Thread Frank L May
According to ICDD, the more proper terminology is "mass attenuation coefficient" instead of the former "linear absorption coefficient." I just thought you'd like to know. Frank May University of Missouri-St. Louis St. Louis, Missouri [EMAIL PROTECTED]

"Resolution"

1999-09-27 Thread Frank L May
I thought I'd start a new thread, because the subject has diverged (h) from the original. If there are 5000 conventional, fixed-wavelength powder XRD systems in the world, they must have been manufactured within about the last 4-5 years. In 1995 I attended a workshop at Denver X-ray Conf

Re: As sent to the neutron mailing list

1999-09-24 Thread Frank L May
As a user of conventional laboratory powder XRD equipment, I too would like to "touch with my fingers such a wonderful powder pattern" (nice, Armel). I accept visually as a peak one which has five (5) adjacent points observed above background. With a peak having breadth of 0.006 degree, the effe

Crystallite size analysis

1999-06-25 Thread Frank L May
Colleagues: Who has experience with the following software? WIN-CRYSIZE Version 2.1 from Siemens Analytical X-Ray Systems -- I have interest in doing Warren-Averbach crystallite size analysis. What are capabilities and limitations of