eisco PH1196B-6 Spectrum Tube Carbon Dioxide Instruction Manual
- June 1, 2024
- eisco
Table of Contents
eisco PH1196B-6 Spectrum Tube Carbon Dioxide
GENERAL SPECIFICATIONS
Spectrum Tubes contain one or more elements as gaseous atoms or molecules.
Energy is supplied through an electric field applied between electrodes at the
ends of the tubes. Ions and electrons formed by the field are accelerated;
collisions convert the increased Kinetic energy to other types, one being
electronic. Electrons in energetic or excited atoms occupy one of many well-
defined states. An electron with high energy E will return to a lower energy 3
state E , simultaneously emitting a photon 2 of energy E – E = E = hc/ ; where
h = 3 2 -30 6.63×10 J-s is Planck’s constant, c = 8 3×10 m/s is the speed of
light and is the wavelength of light (in meters) in the emitted photon.
Each excited atom type emits characteristic wavelength determined by energy level differences E present in that species. One may observe a particular color with the eye; analysis with a spectrometer will reveal a series of sharp (monochromatic) emission lines.
OBSERVING THE SPECTRA
These Spectrum Tubes use research-grade gasses and vapors to provide bright-
line spectral lines of the highest clarity. They are designed for optimum
intensity and line resolution when examined in a student grade spectrometer
equipped with a ca.200 line/mm (5000 line/inch) diffraction grating.
The pressure of the various gasses in spectrum tubes is a carefully controlled
value that will produce the maximum quality of brightness and clarity of the
spectral lines.
For some tubes it is not necessarily the same value of pressure that produces
maximum continuous operating life of the spectral lines. Tubes should be
energized with the Spectrum Tube Power Supply, Which is made expressly for
this purpose. Tube life is extended if operation is cyclic for no more than 30
seconds “on”, 30 seconds “off” etc., increasing the usable life of the tubes.
Some tubes using neon, helium and other gases found in cold cathode display
signs can run continuously with less deterioration of the quality of the
spectral lines. The others, such as hydrogen, the halogens and water vapor,
require more care in processing to increase the life. Pure nickel electrodes
and the best research grade of gases are used, and meticulous care is taken in
processing to increase service life.
DESCRIPTION OF SPECTRA
About 6 intense lines from carbon superimposed on the spectrum form oxygen.
| Color | Wavelength Å |
|---|---|
| Violet | 4150 |
| Violet | 4250 |
| Violet | 4450 |
| Violet | 4550 |
| Blue | 4900 |
| Green | 5100 |
| Green | 5200 |
| Green | 5300 |
| Green | 5400 |
| Green | 5650 |
| Red | 6100 |
| Red | 6200 |
| Red | 6300 |
| Red | 6600 |
CUSTOMER SUPPORT
U.S. Distributor:
Eisco Scientific 850 St Paul St, Suite 15, Rochester, NY 14605
Website : www.eiscolabs.com
