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Emits from 25nm to the Visible
Uses inert gases or mixtures
CW operation (not pulsed)
Stable, Quiet
Windowless Hollow Cathode
1、Emits from 25nm to the Visible
2、Uses inert gases or mixtures
3、CW operation (not pulsed)
4、Stable, Quiet
The Model 629 Hollow Cathode is a CW gas discharge source used to ionize molecular or rare gases. It operates with no window and is a rich source of ion lines at wavelengths longer than 25 nm (less than 50 eV). Output line emission depends on the gases used. It is possible to mix or switch gases during operation. It is electrically quiet and features a water cooled anode and cathode. A differential pumping accessory is available to limit the gas load into the spectrometer. Commercial grade gases are generally used and selection may depend on your application. The source body has a port for directly monitoring gas pressure in the discharge.
Source operation requires a 2 kV 500 mA current regulated power supply like the McPherson Model 730
?Specifications (Hollow Cathode lamp Data Sheet)
Source：Gas discharge
Wavelength range：25nm to Visible
Flux in bright lines：~10E8 photons/second
Source Emission：Ionized gas emission lines
Emission uniformity：~12 degree cone angle
Power Supply：0.5 A 2000 VDC required sold separate (see Model 730)
Requires：Cooling water, gas (He, Ne, Ar, etc.) and 0.5 A at 2000 VDC
Starting pressure：0.5 - 1 torr
Operating pressure：200 - 400 microns
Size：approximately cylindrical, 6" diameter x 13" long
Weight：8 lbs
