NanoSIMS 50 & 50L Instrumentation - Intercovamex
NanoSIMS 50 & 50L Instrumentation - Intercovamex
NanoSIMS 50 & 50L Instrumentation - Intercovamex
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<strong>NanoSIMS</strong> sample mounting 1/2<br />
The standard <strong>NanoSIMS</strong> holder is <strong>50</strong>mm in diameter. The front plate can be customized depending on the user needs. Sample<br />
thickness can be up to 9mm. The sample surface must be flat. The Z movement of the sample stage can be used to keep<br />
sample/extraction distance at 400µm +/- <strong>50</strong>µm. Due to the small sample-lens distance, the sample must not degas too much in<br />
order to avoid risks of arcing. Typical working condition is in the E-9/ E-10 torr range. We thus recommend to minimize, if any, the<br />
embedding material volume. Gold coating of the sample is generally used in order to reduce sample charging problems.<br />
Below is a schematic of a <strong>NanoSIMS</strong> sample holder with 10mm holes (different hole sizes are available), with parts giving an idea of<br />
some possible mountings. For an easier viewing, the schematics are not at scale.<br />
PARTS<br />
SOME SAMPLE MOUNTINGS<br />
0.1mm<br />
Attention! If rectangular sample, check<br />
its diagonal to be less than 10.4mm !<br />
Ø9mm<br />
Ø10.4mm<br />
+0, -0.05<br />
Gold<br />
Part of the sample holder.<br />
Material: ARCAP AP4<br />
Ø10mm<br />
+0, -0.1<br />
Intermediate<br />
variable<br />
Ø10mm<br />
+0, -0.1<br />
ring.<br />
Material: ARCAP AP4<br />
Thin flat sample glued or fixed with non-degasing<br />
(< 1E-9 Torr) conductive double-side sticky tape<br />
4mm<br />
film<br />
Thicker flat sample glued or fixed with non-degasing<br />
(< 1E-9 Torr) conductive, double-side sticky tape<br />
Metallic cylinder.<br />
Material: ARCAP AP4<br />
Part #: 45620693<br />
0.1mm<br />
Ø10mm<br />
+0, -0.1<br />
4mm<br />
Ø10mm<br />
+0, -0.1<br />
Four<br />
Ø9mm<br />
Thin plate with holes.<br />
Four holes of diam. 3mm.<br />
Material: Z2-CN18-10,<br />
Part #: 45620694<br />
Small particles pressed into a gold foil<br />
Embedding ring.<br />
Material: ARCAP AP4, Part #: 45620692<br />
Attention! If rectangular sample to be embedded,<br />
check its diagonal to be less than 9mm !<br />
EOS<br />
Amagnetic Spring<br />
Small sample(s) analyzed through the<br />
holes of the thin top « grid » or « plate »<br />
EOP<br />
03mm 0.3mm<br />
Metal<br />
cylinder<br />
EOW<br />
Sample<br />
holder<br />
same<br />
potential<br />
Coaxial optics showing the short working distance<br />
Embedding in high vacuum resin or metal in metallic cylinder,<br />
then polished (or not if it is flat) and gold coated if needed.<br />
Ex: Korapox 439 epoxy (www.koemmerling-chemie.de),<br />
Varian Torr Seal Low Vapor Pressure Resin (www.varianinc.com).<br />
Also used: Wood metal (In-Bi alloy melting at 78°C)<br />
<strong>NanoSIMS</strong> <strong>50</strong>
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