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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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Sample 4:

Sample 5:

Sample 7:

new wire




Sem picture1
SEM picture

Wire samples: 7

Magnification:

Location:

Good wire


Sem picture2
SEM picture

Wire samples: 4 and 5

Magnification: 40x

Location:

at beginning of dark region,

just below scratch

scratch

Wire sample 5


Sem picture3
SEM picture

Wire sample: 5

Magnification: 5000x

Voltage: 12 kV

Location:

at beginning of dark region,

just below scratch


Sem picture4
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
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


Analysis of dark spot 16kv

DCSN0026.JPG 12:39

Analysis of dark spot (16kV)

DCSN0028.JPG 12:44


Difference dark light spot

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
Check with WDS for Silicon (Wavelength Dispersion)

DCSN0041.JPG 14:38

W


Checked eds of good wire
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 5 every 100 um systematically
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
Checked for Oxygen with WDS

DCSN0054.JPG 17:07

DSCN0057.JPG 17:20


Check with wds for carbon yes
Check with WDS for Carbon: Yes…

PS. Also checked for Cr: not found.


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