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Microscope

Microscope. bla. The samples. Sample 4:. Sample 5:. Sample 7: new wire. Location of wires:. SEM picture. SEM picture. Wire samples: 7 Magnification: Location: Good wire. SEM picture. Wire samples: 4 and 5 Magnification: 40x Location: at beginning of dark region,

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Microscope

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  1. Microscope • bla

  2. The samples

  3. Sample 4: Sample 5: Sample 7: new wire

  4. Location of wires:

  5. SEM picture

  6. SEM picture Wire samples: 7 Magnification: Location: Good wire

  7. SEM picture Wire samples: 4 and 5 Magnification: 40x Location: at beginning of dark region, just below scratch scratch Wire sample 5

  8. SEM picture Wire sample: 5 Magnification: 5000x Voltage: 12 kV Location: at beginning of dark region, just below scratch

  9. SEM picture Wire sample: 5 Magnification: 5000x Voltage: 12 kV Location: 0.5 mm from beginning of dark region

  10. Magnification: x100 (Picture made at the UvA)

  11. Typical EDS spectrum DCSN0014.JPG 12:07 Only peaks of Au and W W: MZ1 1.68 keV Au: Ma 2.12, 2.20 keV

  12. DCSN0026.JPG 12:39 Analysis of dark spot (16kV) DCSN0028.JPG 12:44

  13. DCSN0039.JPG 14:28 Difference dark/light spot • Dark spot: more W • Light spot: more Au 2) 1) We don’t understand peak at 1.40 keV The only element there is Se

  14. Check with WDS for Silicon (Wavelength Dispersion) DCSN0041.JPG 14:38 W

  15. Checked EDS of good wire DCSN0046.JPG 16:16 • 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

  16. Checked EDS of wire sample 5Every 100 um systematically DCSN0048.JPG 16:31 • Normal • A bit of W • A bit of W  picture • A bit of W • A tiny bit of W • More W  picture • A bit of W • A bit of W • A tiny bit of W • A bit of W DCSN0051.JPG 16:55

  17. Checked for Oxygen with WDS DCSN0054.JPG 17:07 DSCN0057.JPG 17:20

  18. Check with WDS for Carbon: Yes… PS. Also checked for Cr: not found.

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