Me kana Zabi na Idon Kafa?
Zaka iko da Thermionic Emission?
Takardunin Thermionic Emission
Thermionic emission shine maimaita electrons daga abu mai karfi saboda energy mai karfi ya shiga zama da ya kawo work function ta abu.
Work Function
Work function shine energy na biyu da ke bukatar don maimaita electron daga abu, wanda yake canza da sauran abubuwa.
Yadda Ake Kula
Thermionic emission an kula da amfani da thermionic current, wanda za a iya kula ta tare da equation na Richardson-Dushman.
J shine thermionic current density (a A/m<sup>2</sup>), wanda shine current per unit area of the cathode
A shine Richardson constant (a A/m<sup>2</sup>K<sup>2</sup>), wanda yake canza da nau'in abu
T shine absolute temperature (a K) of the cathode
ϕ shine work function (a eV) of the cathode
K shine Boltzmann constant (a eV/K), wanda yake da 8.617 x 10<sup>-5</sup> eV, and T shine absolute temperature (a K) of the cathode.
Nau'o'i na Emitters
Nau'o'i masu yawan thermionic emitters shine tungsten, thoriated tungsten, da oxide-coated emitters, kowane shine da muhimmanci a fannan gida.
Fannan Gida na Thermionic Emission
Thermionic emission ana amfani a cikin devices kamar vacuum tubes, cathode-ray tubes, electron microscopes, da X-ray tubes.
