Model 235SS Spectrometer

Model 235SS (T), Basic table type, half meter, Seya- Namioka vacuum UV scanning monochromator consisting of: Stainless Steel vacuum chamber; manual drive; wavelength counter accurate to ±1Å; kinematically mounted grating holder and bracket. Stepper motor & drive optional. Completely assembled and factory tested. Less vacuum pumping system and instrument support table.

Specifications

Focal Length 0.5 meter concave grating

Angle between entrance and exit beams 70.25 degrees

f / No. 11.4

Wavelength Range <30 nm to 1200 nm

Wavelength Accuracy +/- 0.10 nm (with 1200 G/mm grating)

Wavelength Reproducibility +/- 0.005 nm (with 1200 G/mm grating)

Grating Ruled Area 30mm x 50 mm

Performance

Grating (G/mm) 1200 600 300

Wavelength Range From <30 to 300 600 1200

First Order Littrow Blaze (nm) 70 150 550

150

200

Resolution (nm) 0.05 0.1 0.2

Dispersion (nm/mm) 1.66 3.33 6.66

Wavelength Range at Focal Plane (nm) 86 172 344

McPherson, Inc.

7A Stuart Road, Chelmsford, MA 01824

Telephone (978) 256-4512 Fax (978) 250-8625 E-Mail mcp@mcphersoninc.com

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Focal Length	0.5 meter concave grating
Angle between entrance and exit beams	70.25 degrees
f / No.	11.4
Wavelength Range	<30 nm to 1200 nm
Wavelength Accuracy	+/- 0.10 nm (with 1200 G/mm grating)
Wavelength Reproducibility	+/- 0.005 nm (with 1200 G/mm grating)
Grating Ruled Area	30mm x 50 mm

Grating (G/mm)	1200	600	300

Wavelength Range From <30 to	300	600	1200

First Order Littrow Blaze (nm)	70	150	550
	150
	200

Resolution (nm)	0.05	0.1	0.2

Dispersion (nm/mm)	1.66	3.33	6.66

Wavelength Range at Focal Plane (nm)	86	172	344