Fwd: X-ray diffraction laboratory manager position

[Suchomel, Matthew R.]

Dear Colleagues 

On behalf of Prof. Jacob Jones, I am passing along the link below for an open 
position of X-ray diffraction laboratory manager position at North Carolina 
State University which may be of interest to someone in our community.

• X-ray diffraction laboratory manager:
https://jobs.ncsu.edu/postings/30892



On Nov 27, 2013, at 14:46 , Jacob Jones  wrote:

The Analytical Instrumentation Facility (AIF) at North Carolina State 
University  is now seeking to fill multiple staff and postdoctoral positions in 
the areas of electron microscopy and X-ray diffraction. Positions are detailed 
in the links provided below. We are looking to hire as soon as possible, but 
our first priority is finding the best candidates to fill these positions. 
Please forward this information to those who may have an interest in applying. 

• X-ray diffraction laboratory manager: 
https://jobs.ncsu.edu/postings/30892

Regards,

Jacob L. Jones
Associate Professor, Department of Materials Science and Engineering
Director, Analytical Instrumentation Facility
North Carolina State University
Raleigh, NC
Email: jacobjo...@ncsu.edu
Phone: 919-515-4557

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Re: Phase volume fraction

[Suchomel, Matthew R.]

With the appropriate sample and high-resolution synchrotron powder diffraction 
data, you can do even better than 0.1 wt%.
 
Here at the APS beamline 11-BM, we've managed to perform quantitative 
refinements on a suspected very dilute ZrB2 impurity in the NIST SRM LaB6 660a 
powder sample, at a level of 0.068 wt% ZrB2.   The accuracy of this value is 
supported by complimentary XRF data showing a calibrated Zr concentration of 
617 ppm in the LaB6 sample.

These data (from J. Faber) are currently in press as proceedings from the 2013 
DXC meeting.

It would be difficult to reproduce this level of sensitivity with more 'real 
world' samples and conditions - but it shows in principle what can be achieved. 
Especially if you submit samples for the free rapid access measurement program 
here at the APS beamline 11-BM. 

http://11bm.xray.aps.anl.gov/users_new.html 
[please forgive the flagrant advert!] 

Matthew Suchomel
Advanced Photon Source
Argonne National Laboratory 




> I guess you are talking about detection limit only, not quantification limit, 
> right?
> The answer largely depends on your material (scattering power, domain size), 
> tube (sampling volume) and counting time. I have seen cases where you can 
> clearly see something below 0.1 wt% and cases where already the percent was 
> off limits. 
> Matteo
> 
> -
> 
>  Matteo Leoni, PhD
> 
>  DICAM
>  University of Trento
>  via Mesiano, 77
>  38123 Trento
>  Italy
> 
>  Tel +39 0461 282416 Fax +39 0461 282672
> 
>  e-mail: matteo.le...@unitn.it
> 
> 
> 
> -Messaggio originale-
> Da: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] Per conto di 
> Apu Sarkar
> Inviato: giovedì 1 maggio 2014 22.24
> A: rietveld_l@ill.fr
> Oggetto: Phase volume fraction
> 
> Hi,
> Can any one tell me what is the minimum phase volume fraction that can be 
> detected by a laboratory X-ray diffractometer. In there any reference for 
> this.
> 
> I am using the new Empyrean from PANalytical.
> 
> Thanks
> Apu
> 
> Department of Nuclear Engineering
> NC State University
> Raleigh, USA
> ++
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> 

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