Microscope

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Microscope

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The samples
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Sample 4
Sample 5
Sample 7 new wire
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Location of wires
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SEM picture
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SEM picture
Wire samples 7 Magnification Location Good
wire
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SEM picture
Wire samples 4 and 5 Magnification
40x Location at beginning of dark region, just
below scratch
scratch
Wire sample 5
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SEM picture
Wire sample 5 Magnification 5000x Voltage
12 kV Location at beginning of dark
region, just below scratch
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SEM picture
Wire sample 5 Magnification 5000x Voltage
12 kV Location 0.5 mm from beginning of
dark region
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Magnification x100 (Picture made at the UvA)
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(No Transcript)
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Typical EDS spectrum
DCSN0014.JPG 1207
Only peaks of Au and W
W MZ1 1.68 keV
Au Ma 2.12, 2.20 keV
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Analysis of dark spot (16kV)
DCSN0026.JPG 1239
DCSN0028.JPG 1244
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Difference dark/light spot
DCSN0039.JPG 1428

1. Dark spot more W
2. Light spot more Au

2)
1)
We dont understand peak at 1.40 keV The only
element there is Se
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Check with WDS for Silicon (Wavelength
Dispersion)
DCSN0041.JPG 1438
W
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Checked EDS of good wire
DCSN0046.JPG 1616

• 2 places wire sample 7 (new)
• 1 place wire sample 6 (non-irradiated)
• 1 place wire sample 5 (far from irr)
• ? all identical EDS spectra

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Checked EDS of wire sample 5Every 100 um
systematically
DCSN0048.JPG 1631

1. Normal
2. A bit of W
3. A bit of W ? picture
4. A bit of W
5. A tiny bit of W
6. More W ? picture
7. A bit of W
8. A bit of W
9. A tiny bit of W
10. A bit of W

DCSN0051.JPG 1655
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Checked for Oxygen with WDS
DCSN0054.JPG 1707 DSCN0057.JPG 1720
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Check with WDS for Carbon Yes
PS. Also checked for Cr not found.