DOI: 10.1063/1.1745139. The Diffusion of Thorium in Tungsten

10.1063/1.1745139

Crossref journal-article

AIP Publishing

Physics (317)

Abstract

Thoriated tungsten wires have been so heat-treated in gas as to develop variations in grain size, ranging in length from 4 μ to 3 cm. These variations produced marked changes in the thermionic emissive characteristics, such as rates of deactivation and of activation and duration of emissive life at normal operating temperature. The heat of diffusion remained unaffected. It was concluded that intergranular diffusion of thorium through tungsten is relatively too rapid to be measured and that the observed phenomenon depends purely on intragranular diffusion. This conception is in accord with the existence of a critical grain size for the realization of a maximum emissive life. Experiments are also described to demonstrate the spreading of thorium atoms over the surface of a single crystal of tungsten and to manifest the effect of slight strains in the lattice upon activation.

Bibliography

Fonda, G. R., Young, A. H., & Walker, A. (1933). The Diffusion of Thorium in Tungsten. Physics, 4(1), 1â6.

Authors 3

Gorton R. Fonda (first)
Andrew H. Young (additional)
Amy Walker (additional)

References 7 Referenced 20

10.1103/PhysRev.22.357 / Phys. Rev. (1923)
{'key': '2024021300303870700_r2', 'first-page': '138', 'volume': '2', 'year': '1930', 'journal-title': 'Rev. Mod. Phys.'} / Rev. Mod. Phys. (1930)
10.1103/PhysRev.25.338 / Phys. Rev. (1925)
{'key': '2024021300303870700_r4', 'first-page': '588', 'volume': '60', 'year': '1919', 'journal-title': 'Trans. Amer. Inst. Min. Eng.'} / Trans. Amer. Inst. Min. Eng. (1919)
{'key': '2024021300303870700_r5', 'first-page': '66', 'volume': '12', 'year': '1931', 'journal-title': 'Zeits. f. Tech. Physik'} / Zeits. f. Tech. Physik (1931)
{'key': '2024021300303870700_r6', 'first-page': '193', 'volume': '7', 'year': '1927', 'journal-title': 'Physika'} / Physika (1927)
{'key': '2024021300303870700_r7', 'first-page': '490', 'volume': '38', 'year': '1932', 'journal-title': 'Zeits. f. Elektrochemie'} / Zeits. f. Elektrochemie (1932)

Dates

Type	When
Created	20 years, 7 months ago (Jan. 11, 2005, 1:06 p.m.)
Deposited	1 year, 6 months ago (Feb. 12, 2024, 7:30 p.m.)
Indexed	1 year, 1 month ago (Aug. 2, 2024, 5:04 a.m.)
Issued	92 years, 8 months ago (Jan. 1, 1933)
Published	92 years, 8 months ago (Jan. 1, 1933)
Published Print	92 years, 8 months ago (Jan. 1, 1933)

Funders 0

None

BibTeX

@article{Fonda_1933, title={The Diffusion of Thorium in Tungsten}, volume={4}, ISSN={2163-5102}, url={http://dx.doi.org/10.1063/1.1745139}, DOI={10.1063/1.1745139}, number={1}, journal={Physics}, publisher={AIP Publishing}, author={Fonda, Gorton R. and Young, Andrew H. and Walker, Amy}, year={1933}, month=jan, pages={1–6} }

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