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Our current work on pnictides includes neutron scattering measurements at Argonne National Laboratory's Intense Pulsed Neutron Source (IPNS).
The measurements conducted in Fall 2003 were performed on the GPPD diffractometer.
This run focused on repeating previous studies on LaSb2 and initiating additional studies on CeSb2.
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| The measurements were conducted on the GPPD diffractometer which usually involves zirconium powder cannisters as shown here. We mounted our crystals by gluing on a smaller (inverted) Zr tube sealed in the sample cannister under He exchange gas. |  |
 | Phil is sealing the samples in He exchange gas in a glove bag at the diffractometer. |
| The GPPD diffractometer uses a displex refrigerator with a sample attached to the copper head shown above the compressor. A cold shield is then attached which shields external blackbody radiation. This stage fits into the vacuum region (you can see the o-ring gasket around the hole) and approximately 1 m below the red "floor", the neutrons can strike the sample.
The He proportional detectors are arranged in a circle around the sample at 1 m distance and scattering is detected within a angle of 15 degrees of the horizontal plane. |  |
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| Alice Acatrinei and Rich setting up a data run. |  |
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Phil makes the discovery that his laptop powersupply has wings! |