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Surface Science components
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EG5000 Electron Source
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Ideal static Auger / charge
neutralisaton
Mounts on 70mm o/d CF
150 micron spot size
High dynamic working distance
All UHV compatible
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The EG5000 is a versatile general
purpose electron gun, with the ability to operate over a wide
energy and current range.
Together with its control electronics
this forms a cost effective primary source for static auger
analysis.
The electronically focused beam can
accomodate an extremely large range of working distances, and may
be positioned or rastered (optional module required) with the X
and Y deflection plates.
The electronic control has a beam
current measuring amplifier which may be attached to the target.
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Technical specification
| Source type |
Tungsten hairpin
filament mounted on a ceramic button, user replaceable.
Flashed to stress relieve |
| Deflection |
Two pairs of orthogonal
electrostatic deflectors |
| Flange to sample
distance |
100-250mm |
| Mounting flange |
70mm OD |
| Electrical feedthrough |
12 way demountable plug
and socket |
| Construction |
UHV compatablie.
Stainless steel |
| Bakeout temp |
180 oC |
| Orientation |
Any |
| Weight |
Approx 1kg mechanical
parts |
| Beam spot size |
250 micron to greater
than 25 mm |
| Beam current |
20microA at 5.0 kV |
| Deflection |
+/-40mm at 190mm
w.d.(With optional modular scan unit) |
| Filament current |
0-5A analogue meter |
| Kinetic energy |
0-5kV analogue meter |
| Focus |
+/- 2.5% on front
panel, +/- 50% on internal tap |
| Target current |
1,10,100,1000microA FSD
analogue meter |
| Static deflection |
Front panel control |
| Voltage ripple and
noise |
Less than 20mV |
| Filament current ripple |
Less than 1.0% |
| Current stability |
<0.1% for 1.0% mains
change, <0.1% for 2oC temp. rise |
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Pricing
| Description |
Order Code |
£ UK |
$ US |
Euro |
| Cable set |
EG5000-CAB |
175 |
300 |
254 |
| Source only |
EG5000S |
2,500 |
4,250 |
4,125 |
| Control/PSU only |
EG5000PSU |
2,853 |
4,850 |
4,707 |
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Copyright © 2001 Moorfield Associates
Last modified: January 12, 2007
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