Evaporation and thermionic emission processes of Pb/W(110) imaged in situ by emission electron microscopy

Hirokazu Fikidome; Masamichi Yoshimura; Kazuyuki Ueda

doi:10.1143/JJAP.45.70

Evaporation and thermionic emission processes of Pb/W(110) imaged in situ by emission electron microscopy

Hirokazu Fikidome, Masamichi Yoshimura, Kazuyuki Ueda

Research output: Contribution to journal › Article › peer-review

Abstract

Evaporation and thermionic emission processes of Pb/W(110) have been studied in situ by emission electron microscopy (EEM). By the photoemitted EEM, the evaporation of Pb except the first layer has been observed In situ at 603-673 K, resulting in an increase in the work function that prevents photoemission of electrons. By heating to 1200 K, the surface can be again imaged by EEM even without illumination, i.e., thermionic emission electron microscopy (TEEM). This TEEM observation at lower temperatures than usual becomes possible owing to thermionic emission assisted by the electric field between the objective lens and the surface.

Original language	English
Pages (from-to)	70-72
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	45
Issue number	1 A
DOIs	https://doi.org/10.1143/JJAP.45.70
Publication status	Published - 2006 Jan 10
Externally published	Yes

Keywords

Evaporation
Pb
Photoemission electron microcopy
Thermionic emission electron microscopy
Tungsten

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.45.70

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Evaporation and thermionic emission processes of Pb/W(110) imaged in situ by emission electron microscopy. / Fikidome, Hirokazu; Yoshimura, Masamichi; Ueda, Kazuyuki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 1 A, 10.01.2006, p. 70-72.

Research output: Contribution to journal › Article › peer-review

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abstract = "Evaporation and thermionic emission processes of Pb/W(110) have been studied in situ by emission electron microscopy (EEM). By the photoemitted EEM, the evaporation of Pb except the first layer has been observed In situ at 603-673 K, resulting in an increase in the work function that prevents photoemission of electrons. By heating to 1200 K, the surface can be again imaged by EEM even without illumination, i.e., thermionic emission electron microscopy (TEEM). This TEEM observation at lower temperatures than usual becomes possible owing to thermionic emission assisted by the electric field between the objective lens and the surface.",

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author = "Hirokazu Fikidome and Masamichi Yoshimura and Kazuyuki Ueda",

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AU - Fikidome, Hirokazu

AU - Yoshimura, Masamichi

AU - Ueda, Kazuyuki

PY - 2006/1/10

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N2 - Evaporation and thermionic emission processes of Pb/W(110) have been studied in situ by emission electron microscopy (EEM). By the photoemitted EEM, the evaporation of Pb except the first layer has been observed In situ at 603-673 K, resulting in an increase in the work function that prevents photoemission of electrons. By heating to 1200 K, the surface can be again imaged by EEM even without illumination, i.e., thermionic emission electron microscopy (TEEM). This TEEM observation at lower temperatures than usual becomes possible owing to thermionic emission assisted by the electric field between the objective lens and the surface.

AB - Evaporation and thermionic emission processes of Pb/W(110) have been studied in situ by emission electron microscopy (EEM). By the photoemitted EEM, the evaporation of Pb except the first layer has been observed In situ at 603-673 K, resulting in an increase in the work function that prevents photoemission of electrons. By heating to 1200 K, the surface can be again imaged by EEM even without illumination, i.e., thermionic emission electron microscopy (TEEM). This TEEM observation at lower temperatures than usual becomes possible owing to thermionic emission assisted by the electric field between the objective lens and the surface.

KW - Evaporation

KW - Pb

KW - Photoemission electron microcopy

KW - Thermionic emission electron microscopy

KW - Tungsten

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Evaporation and thermionic emission processes of Pb/W(110) imaged in situ by emission electron microscopy

Abstract

Keywords

ASJC Scopus subject areas

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