强激光与粒子束
彊激光與粒子束
강격광여입자속
HIGH POWER LASER AND PARTICLEBEAMS
2007年
3期
511-514
,共4页
祁康成%林祖伦%曹贵川%成建波%Daniel den Engelsen
祁康成%林祖倫%曹貴川%成建波%Daniel den Engelsen
기강성%림조륜%조귀천%성건파%Daniel den Engelsen
场发射%六硼化镧(LaB6)%尖锥%离子轰击%激活
場髮射%六硼化鑭(LaB6)%尖錐%離子轟擊%激活
장발사%륙붕화란(LaB6)%첨추%리자굉격%격활
Field emission%Lanthanum hexaboride(LaB6)%Single tip%Ion bombardment%Activation
报道了六硼化镧(LaB6)场发射尖锥的场发射性能.采用电化学腐蚀方法制作了LaB6场发射尖锥,并在10-2～10-7 Pa 的宽真空度范围内对单尖LaB6场发射二极管的发射特性进行了测试.发现残余气体电离产生的离子轰击对LaB6场发射阴极尖锥表面起到了离子清洗作用,使LaB6场发射尖锥在低真空工作后发射电流大幅度提高.离子轰击是一种适用于LaB6场发射阴极的激活处理方法.
報道瞭六硼化鑭(LaB6)場髮射尖錐的場髮射性能.採用電化學腐蝕方法製作瞭LaB6場髮射尖錐,併在10-2～10-7 Pa 的寬真空度範圍內對單尖LaB6場髮射二極管的髮射特性進行瞭測試.髮現殘餘氣體電離產生的離子轟擊對LaB6場髮射陰極尖錐錶麵起到瞭離子清洗作用,使LaB6場髮射尖錐在低真空工作後髮射電流大幅度提高.離子轟擊是一種適用于LaB6場髮射陰極的激活處理方法.
보도료륙붕화란(LaB6)장발사첨추적장발사성능.채용전화학부식방법제작료LaB6장발사첨추,병재10-2～10-7 Pa 적관진공도범위내대단첨LaB6장발사이겁관적발사특성진행료측시.발현잔여기체전리산생적리자굉격대LaB6장발사음겁첨추표면기도료리자청세작용,사LaB6장발사첨추재저진공공작후발사전류대폭도제고.리자굉격시일충괄용우LaB6장발사음겁적격활처리방법.
This paper describes the field emission characteristics of electrochemically fabricated lanthanum hexaboride (LaB6) single tip emitters.It is found that high pressure operation will significantly enlarge the effective emission area and emission current density.This phenomenon is contributed to the bombardment of ions generated by residual gas molecules interacting with emitted electrons.High pressure operation is probably a method to activate LaB6 field emitters.
