Accurate calculation of cylinder lens potentials using the nine-point relaxation and Bessel expansion methods von Heddle, D W O

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Measurements of electron impact optical excitation functions von HEDDLE, D. W. O, GALLAGHER, J. W

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Excitation of the 468.6 nm line of by electron impact on the neutral ground state von Heddle, D W O, Kay, Susan M

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Geometric aberrations in electrostatic lenses: I. A simple and accurate computer model von Renau, A, Heddle, D W O

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The magnification behaviour of a five-element electrostatic lens von Heddle, D W O, Papadovassilakis, N

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High Resolution Studies of Electron Excitation. VI. Resonance Series in Helium von Heddle, D. W. O.

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Excitation Processes in Helium von Gabriel, A. H., Heddle, D. W. O.

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A comparison of the étendue of electron spectrometers von Heddle, D W O

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Reply to comment on 'Geometric aberrations in electrostatic lenses: II' von Renau, A, Heddle, D W O

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The Polarization of Electron Impact Radiation in Helium von Heddle, D. W. O., Lucas, C. B.

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Threshold Behaviour of Electron Excitation and Polarization Functions in Helium von Heddle, D. W. O., Keesing, R. G. W.

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High Resolution Studies of Electron Excitation. IV. The $n=3$ States of Helium von Heddle, D. W. O., Keesing, R. G. W., Parkin, A.

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High Resolution Studies of Electron Excitation. III. Polarization near Threshold of Light from the 4D States of Helium von Heddle, D. W. O., Keesing, R. G. W., Watkins, R. D.

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Absorption Cross-Sections in the Vacuum Ultra-Violet. I. Continuous Absorption of Oxygen (1800 to 1300 angstrom) von Ditchburn, Robert William, Heddle, D. W. O.

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High Resolution Studies of Electron Excitation. I. The 4S States of Helium and the Energy Scale von Heddle, D. W. O., Keesing, R. G. W., Kurepa, Jelena M.

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On the polarisation of atomic line radiation excited by electron impact von Heddle, D W O

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Multiple-element electrostatic lenses: I. The five-element lens von Trager-Cowan, C, Kay, S M, Heddle, D W O

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The Bethe approximation: where to draw the line von Heddle, D W O

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The '5.2 eV' resonance in electron-mercury scattering von Heddle, D W O

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Multiple-element electrostatic lenses: II. A multiple disc lens von Trager-Cowan, C, Miller, R B, Kay, S M, Heddle, D W O

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