![]() Note: Although discharge lamps have many advantages but it had a disadvantage also that plasma has immense energy, if energy is not controlled then it could be hazardous in nature and can prove to be havoc but companies took care of energy by using other components in bulb. ![]() They consist of a cathode made from the element of interest, an anode and an inert filler gas contained in a glass envelope. Other advantages include, no shadow formation, less heat consumption etc. Hollow Cathode Lamps 6 Hollow cathode lamps (HCL) are discharge lamps designed for use in Atomic Absorption (AA) instruments. More light: Discharge lamps use plasma to generate light which is much more powerful than any physical filament, plasma energy is used to conduct nuclear fusion, so you can think how powerful it is. ELECTRODELESS DISCHARGE LAMP: - A small amount of the metal or salt of the element for which the source is to be used is. More life span: Discharge lamps have more life then incandescent one because incandescent use physical filament which after sometime get ruined due to continuous heating process. Each element has its own unique lamp which must be used for that analysis. Less consumption of electricity: Discharge lamps consume less electricity in comparison to incandescent lamps because in later lamps to spread light continuous electric current is required while in former lamps electricity requires only to create plasma, once created it no longer needs electricity. Since the 1990s, electrodeless light sources have been introduced in the market these lamps operate either without electrodes, or with electrodes that are placed outside the discharge vessel. An illustration of a hollow cathode lamp is shown in Figure 6.3A. The atomic emission of the lock-in amplifier was converted to a frequency sources included an inductively coupled argon plasma, and integrated for 60 sec. ![]() Atomic absorption spectrophotometers require a separate source lamp, called a hollow cathode lamp, for each individual element that you wish to measure. Electrodeless discharge lamps have several advantages compared to lamps containing electrodes, including longer life, improved lumen maintenance, lamp efficacy, flexibility of lamp design, the use of chemical doses that would interact with electrodes, and improved electrical control. ![]() When electric current passes through it, it generates heat which glows as light.Īdvantages of discharge lamps over incandescent lamps: One of these concerns the radiation source. In Incandescent lamps, a filament is used inside the vacuum chamber bulb. Hint: In order to answer this question we need to understand discharge lamps and Incandescent lamps.Ī discharge lamp or a gas discharge lamp is a lamp in which an generated artificial light source is used instead of regular one, in this lamp, an ionized gas is captured inside chamber where we send an electric discharge causing plasma (fourth state of matter) to generate inside it, when plasma heat up it glows and emits light which then by using filters spread outside lamp as beautiful colors of light. ![]()
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