Microscope
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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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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,

just below scratch

scratch

Wire sample 5


SEM picture

Wire sample: 5

Magnification: 5000x

Voltage: 12 kV

Location:

at beginning of dark region,

just below scratch


SEM picture

Wire sample: 5

Magnification: 5000x

Voltage: 12 kV

Location:

0.5 mm from beginning of dark

region


Magnification: x100

(Picture made at the UvA)


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


DCSN0026.JPG 12:39

Analysis of dark spot (16kV)

DCSN0028.JPG 12:44


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


Check with WDS for Silicon (Wavelength Dispersion)

DCSN0041.JPG 14:38

W


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


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


Checked for Oxygen with WDS

DCSN0054.JPG 17:07

DSCN0057.JPG 17:20


Check with WDS for Carbon: Yes…

PS. Also checked for Cr: not found.


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