On the mechanism of electrical breakdown between nickel electrodes in vacuo
Pre-breakdown currents were measured from polished nickel electrodes after various outgassing treatments at pressures of 10 −6 to 10 −9 torr. Breakdown was initiated by electron currents emitted from cathode sites characterized by work functions greater than 4 ev, electric field magnification factor...
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| Published in: | International journal of electronics 1968-04, Vol.24 (4), p.389-396 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | eng |
| Online Access: | Get full text |
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| Summary: | Pre-breakdown currents were measured from polished nickel electrodes after various outgassing treatments at pressures of 10
−6
to 10
−9
torr. Breakdown was initiated by electron currents emitted from cathode sites characterized by work functions greater than 4 ev, electric field magnification factors of about 200 and emitting areas of 1 × 10
−12
to 1 × 10
−8
cm
2
. A breakdown mechanism is postulated which consists of the electron bombardment of the anode, the growth and 'blow-out ' of emitting sites and the transport of material from the anode to cathode. |
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| ISSN: | 0020-7217 1362-3060 |