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Secondary emission of electrons from sodium films contaminated by gas
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Correlation between variation of secondary electron emission and atomic number
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[4]
COPELAND PL, 1938, PHYS REV, V53, P328
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Secondary emission from films of silver on platinum
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1940, 57 (08)
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[7]
Thermionic emission from tungsten and thoriated tungsten filaments
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PHYSICAL REVIEW,
1936, 49 (01)
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