23 Feb 2006 1 Microscope bla. 23 Feb 2006 2 The samples.

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Presentation transcript:

23 Feb Microscope bla

23 Feb The samples

23 Feb Sample 5: Sample 4: Sample 7: new wire

23 Feb Location of wires:

23 Feb SEM picture

23 Feb SEM picture Wire samples: 7 Magnification: Location: Good wire

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

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

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

23 Feb Magnification: x100 (Picture made at the UvA)

23 Feb

23 Feb Typical EDS spectrum DCSN0014.JPG 12:07 Only peaks of Au and W W: MZ keV Au: Ma 2.12, 2.20 keV

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

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

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

23 Feb Checked EDS of good wire 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 DCSN0046.JPG 16:16

23 Feb Checked EDS of wire sample 5 Every 100 um systematically 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 DCSN0048.JPG 16:31 DCSN0051.JPG 16:55

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

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