Difference between revisions of "On-Site Experiments"

From Ug11bm
Jump to navigationJump to search
Line 20: Line 20:
== Focused Beam Profile ==  
== Focused Beam Profile ==  


[[Image:diffz.png|frameless|400px|Horz Beam profile focused.png]]
===Horizontal===
11-BM beam profile at sample position with tightest horizontal focus - commonly used for hot air blower to minimize temperature differential over sampled powder volume.
 
[[Image:diffz.png|frameless|600px|Horz Beam profile focused.png]]


[[Image:diffy.png|frameless|400px|Vert Beam profile focused.png]]
 
===Vertical===
11-BM beam profile at sample position with standard vertical focus - this is fixed (determined by 2nd optics mirror) and does not change with varying horizontal focus.
 
[[Image:diffy.png|frameless|600px|Vert Beam profile focused.png]]


== more notes 2 ==
== more notes 2 ==

Revision as of 22:16, 31 January 2013

Capillaries

A selection of Kapton, Glass and fused Quartz capillary tubes are available at 11-BM for on-site experiments. Check with staff to confirm, but the materials and dimensions shown in the chart below are typically on hand.

Use quartz for high temperature work ( > 450 C). Glass adds a bit smaller background to the diffraction pattern and is easier to seal, but fused quartz tubes are stronger, more chemical resistant, and survive higher temperatures.

See the Wiki page for more info on capillaries (vendors, sizes etc)

11BMCapillaryTubing.png

Tools

The following tools might be helpful for preparing samples:

  • Small Drill Bits can be useful for loading & packing powder inside Kapton tubes (more details)
  • Powder Sieves help remove any large particles and ensure homogeneous powders. 11-BM has a selection of powder sieves available for use by on-site users at the beamline. (more details)
  • Mortar & Pestles Small and large agate mortars and pestles are also available for grinding powders. (more details)

Focused Beam Profile

Horizontal

11-BM beam profile at sample position with tightest horizontal focus - commonly used for hot air blower to minimize temperature differential over sampled powder volume.

Horz Beam profile focused.png


Vertical

11-BM beam profile at sample position with standard vertical focus - this is fixed (determined by 2nd optics mirror) and does not change with varying horizontal focus.

Vert Beam profile focused.png

more notes 2