Kuenzaniswa ne tungsten cathodes,lanthanum hexaborate (LaB6) cathodes ine zvakanakira senge yakaderera maerekitironi kutiza basa, yakakwira emission electron density, kuramba ion bombardment, yakanaka chepfu kuramba, kugadzikana kuita, uye refu sevhisi upenyu.Yakave yakabudirira kushandiswa mune akasiyana-siyana epamusoro-chaiyo zviridzwa uye zvishandiso zvakaita seplasma masosi, scanning electron microscopy, electron beam lithography machines, Auger spectroscopy, uye maelectron probes.The basic property yeLaB6, LaB6, ndeyeCsCI mhando cubic primitive lattice.Lanthanum maatomu anogara pamakona masere ecube.Boron maatomu matanhatu anoumba octahedron uye ari pakati pecube.Iyo covalent bond inoumbwa pakati peBB, uye maerekitironi asina kukwana panguva yekubatana pakati peBB anopiwa neatomu yelanthanum.La ine nhamba yevalence electron ye3, uye maerekitironi maviri chete anodiwa kuti atore chikamu mukubatana.Erekitironi imwe yasara inova erekitironi yakasununguka.Naizvozvo, iyo La-B chisungo chisungo chesimbi chine yakanyanya kukwirisa conductivity uye yakanaka conductivity.Nekuda kwekubatana kwakabatana pakati peB maatomu, simba rebhondi rakakwirira, simba rechisungo rakasimba, uye hurefu hwebhondi ipfupi, zvichikonzera mubatanidzwa weLaB6.Iine humwe hunhu hwakadai sekuoma kwepamusoro, nzvimbo yakakwira yekunyungudika, uye kuramba padyorare earth metals.
Nguva yekutumira: Sep-28-2023