[sdpd] Powder diffraction capabilities at LANSCE

[Anna Llobet <allobet...@lanl.gov>]

Dear colleagues

I would like to call your attention to the powder diffraction 
capabilities at the Lujan Center for neutron scattering at Los Alamos 
National Laboratory ( http://www.lansce.lanl.gov/lujan/index.html ).

Four different powder diffractometers at the Lujan Center are currently 
open to external users: NPDF, SMARTS, HIPD and HIPPO (see more technical 
information below). Beam time is allocated based on a peer reviewed 
proposal submission process twice a year . First Call:  *Deadline* for 
submitting the proposals is 6:00 p.m. Mountain Standard Time, Monday, 
*March 23, 2009*. Successful proposals will be scheduled during the 
period from June through September 2009. S**econd Call: Call for 
proposals will start on June 1, 2009.  Deadline for submitting the 
proposals is 6:00 p.m. Mountain Standard Time, Monday, July 20, 
2009. Successful proposals will be scheduled during the period from 
September through December 2009. In addition, *"Fast access" **or "hot" 
science proposals are accepted all year-round and are subject to the 
discretion of the instrument scientist.*
<http://www.lansce.lanl.gov/userprogram/docs/Proposal_Call_2nd.pdf>

For information about science done on the powder diffractometers and 
ancillary equipment, you can contact the instrument scientist (listed 
below) directly.
For general information regarding the user program and proposal 
submission, you can contact LANSCE user office by e-mail at 
lansce_users...@lanl.gov or by telephone at +1-(505)-665-1010.
============================================================
-NPDF : A high-resolution total-scattering neutron powder 
diffractometer. NPDF is designed for pair distribution function (PDF) 
studies of disordered and crystalline materials. It is equally well 
suited for high-resolution crystallographic studies.
( d-spacing range 0.12- 4A  with 0.15% to 0.31 % resolution 
http://www.lansce.lanl.gov/lujan/instruments/NPDF/pdfs/NPDF.pdf
Instrument scientist: Thomas Proffen +1-(505)-665-6573  
tproffen...@lanl.gov <mailto:tproffen...@lanl.gov> )

-SMARTS: Spectrometer for Materials Research at Temperature and Stress. 
A third-generation neutron diffractometer optimized for the study of 
engineering materials. It provides an exciting range of capabilities for 
studying polycrystalline materials focusing on two areas: the 
measurement of deformation under stress and extreme temperature and the 
measurement of spatially resolved strain fields. It enables measurements 
on small (1 mm3) or large (1 m3) samples. Components with dimensions up 
to 1 m and up to 1,500 kg can be positioned precisely in the beam.
(d-spacing range 0.5-4A with about 0.4 % resolution 
http://www.lansce.lanl.gov/lujan/instruments/SMARTS/pdfs/SMARTS.pdf 
<http://www.lansce.lanl.gov/lujan/ER1ER2/SMARTs/instrument/SMARTS.pdf>
Instrument scientist:  Don W. Brown +1-(505)-667-7904 dbrown...@lanl.gov 
<mailto:dbrown...@lanl.gov> or Bjorn Clausen 505-667-2944 clausen...@lanl.gov 
<mailto:clausen...@lanl.gov> )

-HIPD: High Intensity Powder diffractometer. It is designed to study the 
atomic and magnetic structure of materials that are available in 
polycrystalline and noncrystalline forms. HIPD is specially suited for 
magnetic diffraction, magnetic and crystalline phase transitions, small 
crystalline samples, neutron absorbing materials, studies of amorphous 
solids. The high flux rates of HIPD also make it very useful for 
time-resolved and pressure studies. PDF studies are also done at HIPD.  
This instrument is currently partially in the user program and has large 
amounts of time available for discretionary use.
(d-spacing range 0.25- 33A with 0.3 to 3% resolution  
http://www.lansce.lanl.gov/lujan/instruments/HIPD/pdfs/HIPD.pdf 
<http://www.lansce.lanl.gov/lujan/ER1ER2/HIPD/instrument/HIPD.pdf>
Instrument scientist: Anna Llobet Megias +1-(505)-6651367 
allobet...@lanl.gov <mailto:allobet...@lanl.gov> )

-HIPPO: High-Pressure-Preferred Orientation. Over two orders of 
magnitude of momentum transfer are available (0.1--30 Å-1) to support 
studies of crystal orientation distribution (texture); amorphous solids; 
magnetic diffraction; small crystalline samples; and samples subjected 
to extreme environments such as temperature, pressure, or uni-axial 
stress. HIPPO has unique high-pressure cells capable of achieving 
pressures of 30 GPa at ambient and high (2000 K) temperatures with 
samples up to 100 mm3 in volume. The uniaxial stress-rig (CRATES) allows 
the study of crystal lattice strains and texture changes in situ during 
the deformation.
(d-spacing range 0.12-47.5A with 0.4-5% resolution  
http://www.lansce.lanl.gov/lujan/instruments/HIPPO/pdfs/HIPPO.pdf 
<http://www.lansce.lanl.gov/lujan/ER1ER2/HIPPO/instrument/HIPPO.pdf>
Instrument scientist: Sven Vogel +1-(505)-667-7016 sven...@lanl.gov 
<mailto:sven...@lanl.gov> )

-- 
====
Dr. Anna Llobet 
Lujan Neutron Scattering Center
Los Alamos National Laboratory
MSH805
Los Alamos, NM  87545, USA

Phone: +1 505 665-1367     Fax: +1 505 665-2676
Email: allobet...@lanl.gov
http://www.lansce.lanl.gov/
http://www.lansce.lanl.gov/lujan/index.html 
Export license: TSPA, Correspondence 



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