AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES

Yang Lingyun; Wang Shusheng

Volume 8 Issue 1

Jan. 1986

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Article Navigation > Journal of Electronics & Information Technology > 1986 > 8(1): 52-59

Yang Lingyun, Wang Shusheng. AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES[J]. Journal of Electronics & Information Technology, 1986, 8(1): 52-59.

Citation:

Yang Lingyun, Wang Shusheng. AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES[J]. Journal of Electronics & Information Technology, 1986, 8(1): 52-59.

Yang Lingyun, Wang Shusheng. AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES[J]. Journal of Electronics & Information Technology, 1986, 8(1): 52-59.

Citation:

Yang Lingyun, Wang Shusheng. AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES[J]. Journal of Electronics & Information Technology, 1986, 8(1): 52-59.

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AN INVESTIGATION ON PULSE PROPERTIES OF IMPREGNATED BARIUM SCANDATE DISPENSER CATHODES

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 1986-01-19

Abstract

Abstract

The impregnated barium scandate dispenser cathode used in microwave tulbes, especially in gyrotrons, has been investigated in following aspects: (1) pulse emission property and work function distribution; (2) electron initial velocity distribution in pulse operation; (3) the effect of pulse duration ratio; (4) anomalous Schottky effect under high electric field. Some useful results are obtained: the pulse emission current density is higher than 20 A/cm2 (when t=850℃) ; the anomalous Schottky effect is observed when the electric field is higher than 104V/cm; the cathode has a flat Ja-f property when the pulse duration ratio is in the range of 510-3--410-2 and an emission current density of 8.8A/cm2 is drawn. In the end, the obtained results are discussed in relation to the surface analysis of the cathode.

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References(1)

References

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