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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 42, Issue 14, Pages 80–86
(Mi pjtf6362)
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Determination of the critical ionization distance and ionization zone during high-temperature field evaporation of molybdenum
N. M. Blashenkov, O. L. Golubev Ioffe Institute, St. Petersburg
Abstract:
Steady-state field evaporation of molybdenum at high emitter temperatures ($T\sim$ 2000 K) has been studied using a magnetic mass spectrometer equipped with a field ion source. Only low-charge ions (Mo$^{+2}$ and Mo$^+$) have been observed in the course of evaporation. The measured ion energies and evaporating field strengths $(F_{ev})$ were used to determine the critical ionization distances $(x_{cr})$ and ionization zones $(\Delta)$ for singly and doubly charged ions. The obtained $x_{cr}$ and $\Delta$ values show that the formation of ions takes place at a certain distance from the emitter surface.
Received: 16.03.2016
Citation:
N. M. Blashenkov, O. L. Golubev, “Determination of the critical ionization distance and ionization zone during high-temperature field evaporation of molybdenum”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 42:14 (2016), 80–86; Tech. Phys. Lett., 42:7 (2016), 754–757
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https://www.mathnet.ru/eng/pjtf6362 https://www.mathnet.ru/eng/pjtf/v42/i14/p80
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Abstract page: | 24 | Full-text PDF : | 4 |
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