Abstract
It is common to employ magnetic shields inside ultrahigh vacuum systems for the elimination in electron spectrometers of stray magnetic fields caused by the Earth or by magnets associated with ion pumps or other devices near the vacuum system. A number of formulas have been presented for the calculation of the efficiency of a magnetic shield (Mager in IEEE Trans Mag 67, 1970, Mager in J Appl Phys 39:1914, 1968, Gubser et al. in Rev Sci Instrum 50:751, 1979). These formulas do not consider deviations from pure cylindrical geometry caused by lips, caps, and pumpout ports. The calculation method studied here is able to approximate the nonideal conditions caused by deviations from perfect cylindrical geometry (Dobscha and Siekhaus in Rev Sci Instrum 57:3123, 1986).
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References
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Obtained from: Dupont, 1007 Market Street, N-2426-A, Wilmington, DE 19898; see Dupont high performance films, Bulletin H-38492 (1983)
Obtained from: Dow Corning, P.O. Box 0994, Midland, MI 48640–0994
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Yates, J.T. (2015). Shielding. In: Experimental Innovations in Surface Science. Springer, Cham. https://doi.org/10.1007/978-3-319-17668-0_15
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DOI: https://doi.org/10.1007/978-3-319-17668-0_15
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