Why does a deuterium lamp produce a continuum?
Why does a deuterium lamp produce a continuum rather than a line spectrum? In a deuterium lamp, the lamp energy from the power source produces an excited deuterium molecule that dissociates into two atoms in the ground state and a photon of radiation. … Consequently, the emission spectrum is a spectral continuum.
What is deuterium light source?
Deuterium lamps are light source lamps that utilize an arc discharge in deuterium (D2) gas. They emit an intense spectrum in the UV region and have feature of unrivaled stability compared to other UV light sources.
How do you dispose of deuterium lamps?
When disposing a deuterium (D2) lamp or halogen (W) lamp, separate them from general waste and handle them as industrial waste. Dispose them so that they will not pollute the environment or negatively affect human body, or ask a professional waste disposal company.
What is role of slit in UV Visible Spectroscopy?
Besides spectral resolution, the slit also controls the amount of light energy incident on the sample. Therefore, the spectral noise level will be significantly affected by changes in the slit setting. The larger the slit setting, the lower the noise in the spectra.
Do deuterium lamps contain mercury?
Deuterium lamps. Deuterium lamps contain deuterium gas and emit UV light; the wavelength range depends on the lamp’s glass material. The lamps emit in one direction only, unlike xenon and mercury-xenon lamps which emit in all directions.
When should deuterium lamps be replaced?
When to replace a lamp
If the peaks of interest have a strong signal, in other words, in excess of 100 mAU/mV, then it is reasonable to wait until the lamp fails to ignite until it is replaced. This will typically be 4,000–8,000 hours.
Why is iodine sometimes introduced into a tungsten lamp?
The iodine tungsten lamp is well known and has been in use for some time. Because of the iodine vapor within the lamp envelope, the tungsten filament can be raised to a much higher temperature than was possible with prior lamps using only argon as a gas filler.