Letter | Published:

Improved Resolution with the X-Ray Projection Microscope

Naturevolume 175pages10781079 (1955) | Download Citation

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Abstract

A RESOLUTION of O.lµ (1000 A.) has now been reached with the shadow type of X-ray microscope by using a thin gold-leaf X-ray target. The instrument described previously by Cosslett and Nixon1–4 was limited to a resolution of 0.5µ due to astigmatism in the electron lens and to electron scattering in the metal target. An attempt was made to reduce the astigmatism by stopping down the aperture of the objective lens used for focusing the electrons. No improvement in resolution was found even for a semi-angular aperture of 2 × 10−2 rad. giving an astigmatic disk of confusion of 0.2µ for the worst possible machining errors of the pole pieces. This indicated that electron scattering in the metal foil target was the true limit on resolution.

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References

  1. 1

    Cosslett, V. E., and Nixon, W. C., Nature, 168, 24 (1951).

  2. 2

    Cosslett, V. E., and Nixon, W. C., Nature, 170, 436 (1952).

  3. 3

    Cosslett, V. E., and Nixon, W. C., Proc. Roy. Soc., B, 140, 422 (1952).

  4. 4

    Cosslett, V. E., and Nixon, W. C., J. App. Phys., 24, 616 (1953).

  5. 5

    Whiddington, R., Proc. Roy. Soc., A, 89, 554 (1914).

  6. 6

    Ehrenberg, W., and Franks, J., Proc. Phys. Soc., B, 66, 1057 (1953).

  7. 7

    Marton, L., Nat. Bur. Standards (Washington), Circular 527, p. 265. Symposium (1951).

  8. 8

    Pattee, H. H., J. App. Phys., 43, 61 (1953).

  9. 9

    Newberry, S. P., and Summers, S. E., Proc. Int. Conference on Electron Microscopy, London, July 1954, Paper 69.

  10. 10

    Nixon, W. C., Proc. Int. Conference on Electron Microscopy, London, July 1954, Paper 70.

  11. 11

    Ennos, A. E., Brit. J. App. Phys., 5, 27 (1954).

  12. 12

    Watson, J. H. L., J. App. Phys., 18, 153 (1947).

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Affiliations

  1. Cavendish Laboratory, Cambridge

    • W. C. NIXON

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https://doi.org/10.1038/1751078b0

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