Lambu-lambu Xenon: Matar Taurari da Yawanci

A xenon arc lamp yana wata masu gas da ya yi tsafta ce ta yi karfi daga ionized xenon gas a matsayin tsari mai yawa. Xenon arc lamps suna da kurba mai sauƙi a kan ultraviolet zuwa visible spectrum, tare da wavelengths mafi girma da suka fito daga 750 zuwa 1000 nm. Suke na da karfin tsafta mai zurfi da ya kama da shafa tsaftar jiki, wanda ya zama da amfani da su a wasu masana'antar da kuma labaran siyasa, solar testing, da kuma research. Xenon arc lamps zai iya ba da tsohuwar hanyar ɗaya: continuous-output xenon short-arc lamps, continuous-output xenon long-arc lamps, da xenon flash lamps.

Me ke Xenon Arc Lamp?

Xenon arc lamp yana nufin wata masu gas discharge lamp, wata electric light da take yi tsafta ta hanyar yanaye electricity daga ionized xenon gas at high pressure. Kalmomin “arc” na nufin electric current da ya yi bayan duwatsu a cikin gas-filled tube. Kalmomin “xenon” na nufin noble gas da ake amfani a matsayin babban muhimmiyar cikin gas mixture a cikin tube. Xenon an zaba saboda ita da tsari mai yawa da ionization potential mai yawa, wanda ke saukar da ita a yi tsafta mai sauƙi da intensity da color rendering.

Yadda Ya Yi Xenon Arc Lamp?

Tushen xenon arc lamp yana da thoriated tungsten electrodes biyu da suka fito face to face da gap mai yawa a cikin envelope mai tsarki mai tsawo da fused silica (ko quartz). Thoriated tungsten yana nufin tungsten alloy da 1 zuwa 2% thorium an adda don saukar da electron emission capability da tungsten. Fused silica yana nufin noncrystalline transparent silicon dioxide glass wanda ke saukar da extra strength da zero thermal expansion. Yana iya daɗe da tsari mai yawa da temperature mai yawa.

Envelope ko bulb yana da xenon gas da tsari mai yawa, tare da 30 bars. Idan voltage an kara a kan electrodes, gas discharge phenomenon ya faru a cikin xenon gas a kan gap da ke daga electrodes. Yana da free electrons da dama a cikin gas saboda thermal agitation ko cosmic rays. Saboda applied electric field across the electrodes, the free electrons get accelerated and collide with xenon atoms. Due to these collisions, electrons from the outer orbit of the xenon atoms get detached from their position and come to a higher energy level. Atoms with electrons of higher energy levels are called excited atoms.

Idan excited atoms sun zo daga energy level mai yawa zuwa energy state da suka fito, suke rage extra energy as photons. Wavelength da energy da photons suka rage yana cikin visible range. Color da tsafta da xenon arc lamp ke gina yana kamar shafa tsaftar jiki. Saboda electrostatic attraction da anode (positive electrode), free electrons ultimately come to the anode and return to the source.

Saboda attraction da cathode (negative electrode), positive ions (xenon atoms that lost electrons) ultimately collide with the cathode’s front surface and generate positive metal ions, neutral xenon atoms, and free electrons. These electrons are called secondary emitted electrons. These electrons help to continue the gas discharge process.

As the cathode is not additionally heated for electron emission, the cathode of a xenon arc lamp is known as a cold cathode.

Me ke Tsohuwar Xenon Arc Lamps?

Xenon arc lamps zai iya ba da tsohuwar ɗaya: continuous-output xenon short-arc lamps, continuous-output xenon long-arc lamps, da xenon flash lamps.

Continuous-output Xenon Short-arc Lamps

Continuous-output xenon short-arc lamps are designed for direct current (DC) operation with a very short arc length (typically less than 5 mm). They have high luminous efficacy (up to 75 lumens per watt) and high color rendering index (up to 95). They are widely used for cinema projection, searchlights, solar simulators, and other applications that require high brightness and stability.

Continuous-output Xenon Long-arc Lamps

Continuous-output xenon long-arc lamps are designed for alternating current (AC) operation with a longer arc length (typically more than 10 mm). They have lower luminous efficacy (up to 40 lumens per watt) and lower color rendering index (up to 85) than short-arc lamps. They are mainly used for general lighting purposes, such as street lighting, industrial lighting, and architectural lighting.

Xenon Flash Lamps

Xenon flash lamps are designed for pulsed operation with a very high peak power (up to several megawatts) and a very short duration (typically less than 1 millisecond). They have low average power consumption (up to 10 watts) and low average luminous efficacy (up to 10 lumens per watt). They are mainly used for photographic flash, strobe lights, laser pumping, and other applications that require high intensity and short duration.

Abubuwan da Xenon Arc Lamps Ke Da Su?

Xenon arc lamps have several advantages over other types of light sources:

• They produce a broad spectrum of light that covers most of the visible range and some of the ultraviolet and infrared range. • They have a high color rendering index that makes objects appear more natural and vivid. • They have a high color temperature that simulates natural sunlight and enhances visibility. • They have a long lifetime that ranges from 500 hours (7 kW) to 1500 hours (1 kW). • They have a stable arc with less flicker and noise. • They have non-consumable electrodes that allow longer operation without interruptions. • They have a low environmental impact as they do not contain mercury or other toxic substances.

Matattun da Xenon Arc Lamps Ke Da Su?

Xenon arc lamps also have some disadvantages compared to other types of light sources:

• They require high voltage and current to operate