| LEED-AUGER
OPTICS (Models BDL600 and BDLB00) |
| Glass-display |
Fused silica coated with
indium-tin oxide conductive layer and P31 phosphor(ZnS:Ag:Cu-green, 525nm wavelength)
|
| BDL600IR |
90º angle of acceptance
from sample at a distance of 50 mm |
| BDL800IR |
100º angle of acceptance
from sample at a distance of 75 mm |
| Retarding Field Analyzer |
Concentric assembly of
hemispherical grids |
| BDL600IR |
Working distance from
sample 15 mm |
| BDL800IR |
Working distance from
sample 18 mm |
| Grid material |
Gold coated tungsten wire
mesh (100 mesh, 81% transparency) |
| Energy Resolution |
0.2% - 0.5% at low modulation volt. |
| Monitoring |
6" or 8"
standard viewport |
| Linear motion |
up to 150 mm retraction
from sample (100 mm standard); linear ball bearing and acme thred with all spring electr. connections |
| Integral Shutter |
Open and close at any position of the linear motion |
| Magnetic shielding |
Mu-metal cylinder with front
cover for maximum atteniuation |
| Assembly |
Extreme-high-vacuum compatibility with stainless steel, high alumina and Au-plater copper alloy materials |
| Mounting |
6"(CF100) or 8"(CF150) double
sided conflat flange with sample distance
145 mm - 500 mm |
| Bakeability |
Under vacuum, 250ºC
maximum |
| |
|
| INTEGRAL
MINIATURE ELECTRON GUN |
| Beam energy system |
LEED - 5 eV to 750 eV AES to 3000 eV |
| Beam current |
LEED - 2 µA at 100 eV and
0.5 mm beam size AES - up to 100 µA at 3
keV |
| Beam size |
from 1 mm to 250 µm -
adjusted by Wehnelt potential, limited by
exchangeable aperture down to 50 µm |
| Electron source |
Tungsten-2% Thoriated filament standard, single crystal LaB6
filament optional |
| Energy spread |
0.45eV (thoriated - tungsten filament) |
| Overall sizes |
10 mm lense diameter and
80 mm length |
