CDA vm200 Instrukcja Użytkownika Pobierz pdf (Strona 16)

Resonance Ltd. | 143 Ferndale Drive North, Barrie, ON L4N 9V9

Standard Light Source

Appendix

The VM200 monochromator (Vacuum Monochromator 200mm focal length) contains a concave

holographic grating with AlMgF2 coating. This grating has the following specifications:

Monochromator

Model

VM200

No. of Lines/mm

1200 l/mm

Diameter

40 x 45mm

Coating

AlMgF2

Spectral Range of Operation

100 – 400nm

Radius of Curvature

200mm

Body Seal Types

Viton O-rings

Body Mating Flanges

2 ¾” Conflat type x 2

Ultimate Pressure

<1 x 10

-6

mbar

Wavelength Drive

Type

10 turn dial/lead screw

Backlash

0.5nm (vacuum)

Step Size

0.4 – 15 Angstroms

Standard Scanning Speeds

0.4 – 15 nm/sec

Accuracy

± 0.3nm

Figure 12: Grating efficiency curve

1 2 ... 11 12 13 14 15 16 17 18 19 20

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CDA vm200 Instrukcja Użytkownika Strona 16