Abstract
Starting from the discovery of Roentgen’s X-ray (Röntgen 1895), I here reconstruct the various attempts carried out to find X-ray diffraction using very thin wedge-shaped slits. These experiments allowed A. Sommerfeld to achieve, at the beginning of 1912, a qualitative estimate of the wavelength of X-rays around 4 × 10−9 cm. This value was at the base, together with the adoption of the space-lattice model for the crystal, of Laue idea of using a crystal as a diffraction grating for X-ray. Then we will discuss the feasibility of the Laue project, as well as the realization of the experiment, and the first results of W. Friedrich and P. Knipping, with the theoretical interpretation given to them by Laue. Laue’s discovery of X-ray diffraction was immediately taken up by William Henry Bragg and re-interpreted by his son William Lawrence in terms of X-ray reflection by the planes of the crystal, thus becoming, in a few months, a formidable tool for the study of crystal structures, as well as for the precise determination of the wavelengths of X-rays (to Bragg father we owe the construction of the first X-ray ionization spectrometer). Particular attention will be given to the works of C. G. Barkla on X-ray absorption, which resulted in the discovery in 1906 of the Roentgen characteristic radiation of the elements. These works strengthened the hypothesis of the wave nature of X-rays, at the expense of the “corpuscular hypothesis” (supported notably by J. Stark and by W.H. Bragg), and represented a solid reference point for the project of Laue.
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References
Barkla CG (1906) Polarization in secondary Röntgen radiation. Proc Roy Soc London 77A:247–255
Barkla CG (1908) Note on X-rays and scattered X-rays. Phil Mag 15:288–296
Barkla CG (1911) The spectra of the fluorescent Roentgen radiations. Phil Mag 22:397–412
Bragg WH (1907) A comparison of some forms of electric radiation. Trans Roy Soc South Australia 31:79–93
Bragg WH (1912a) X-Rays and Crystals. Nature 90:360–361
Bragg WL (1912b) The specular reflection of X-rays. Nature 90:410
Bragg WH (1913a) X-rays and crystals. Nature 90:572
Bragg WL (1913b) The diffraction of short electromagnetic waves by a crystal. Proc Cambridge Phil Soc 17:43–57 (read 11 November 1912)
Bragg WL (1913c) The structure of some crystals as indicated by their diffraction of X-rays. Proc Roy Soc London 89A:248–277
Bragg WH, Bragg WL (1913) The reflection of X-rays by crystals. Proc Roy Soc London 88A:428–438
Bragg WH, Bragg WL (1915) X-rays and crystal structure. G. Bell, London
Bragg WH, Bragg WL (1921) Rayons X et structure cristalline (French translation of the 3rd edition of Bragg and Bragg 1915). Gauthier-Villars, Paris
Bragg WH to Rutherford E (1912) Rutherford papers, Cambridge University Library
de La Rue W, Muller HW (1880) Experimental researches on the electric discharge with the chloride of silver battery. Phil Trans R Soc Lond 171:65–116
Ewald PP (ed.) (1962) Fifty Years of X-ray diffraction. N.V.A. Oosthoeks Uitgeversmaaatschappij, Utrecht. Reprinted in pdf format for the IUCr XVIII Congress, Glasgow, Scotland, Copyright© 1962, 1999 International Union of Crystallography
Friedrich W, Knipping P, Laue M v (1912a) Interferenz-Erscheinungen bei Röntgenstrahlen. Sitzungsberichte der mathematisch-physikalischen Classe. K. B. Akademie der Wissenschaften zu Munchen 42:303–322
Friedrich W, Knipping P, Laue M v (1912b) Sealed note deposited with the Bavarian Academy of Science on May 4, 1912. Deutsches Museum, Munich
Haga H, Wind CH (1899) Die Beugung der Röntgenstrahlen. Ann Physik 68:884–895
Koch PP (1913) Über die Messung der Schwärzung photographischer Platten in sehr schmalen Bereichen. Mit Anwendung auf die Messung der Schwärzungsverteilung in einigen mit Röntgenstrahlen aufgenommenen Spalphotogrammen von Walter und Pohl. Ann Physik 42:507–522
Laue MV (1913) Wellenoptik. In: Enzyklopedie der Mathematischen Wissenschaften, vol 5. Teubner, Leipzig, pp 359–487
Laue MV (1915) Concerning the detection of X-ray interferences. Nobel lecture, November 12, 1915. In: Nobel Foundation (1967), pp 347–355
Laue MV (1961) Gesammelte Schriften und Vortrage. F. Vieweh, Brunswick
Laue MV (1962) My Development as a Physicist. An Autobiography. In: Ewald PP (1962). Originally published in Laue MV (1961) vol. 3, V-XXXIV
Nobel Foundation (1967) Nobel Lectures including presentation speeches and laureates’ biographies. Physics 1901–1921, Elsevier, Amsterdam
Ritchmyer FK (1934) Introduction to Modern Physics. McGraw-Hill Book Company, New McGraw-Hill Book Company, New York and London
Röntgen WC (1895) Über eine neue Art von Strahlen. Sitzungsberichte der Physik.-med. Gesellschaft zu Würzburg: 132–141; Annalen der Physik und Chemie 64(1898):1–11. (Nature 53(1896):274)
Röntgen WC (1896) Über eine neue Art von Strahlen. II. Sitzungsberichte der Physik.-med. Gesellschaft zu Würzburg: 11–16; Annalen der Physik und. Chemie 64(1898):12–17
Röntgen WC (1897) Weitere Beobachtungen über die Eigenschaften der X-Strahlen. Sitzungsberichte der Königlich Preussischen Akademie der Wissenschaften zu Berlin 1:576–592; Annalen der Physik und. Chemie 64(1898):18–37
Sommerfeld A (1909) Über die Verteilung der Intensität bei der Emission von Röntgenstrahlen. Phys Zeit 10:969–976
Sommerfeld A (1911) Über die Struktur der γ-Strahlen. Münchener Berichte 41:1–60
Sommerfeld A (1912) Über die Beugung der Röntgenstrahlen. Ann Physik 38:473–506
Stark J (1909) Zur experimentellen Entscheidung zwischen Ätherwellen- und Lichtquantenhypothese. I Röntgenstrahlen. Phys Zeit 10:902–913
Stuewer RH (1971) William H. Bragg’s Corpuscular Theory of X-rays and γ-rays. Brit J Hist Sci 5:258–281
Thompson S (1897) Light: visible and invisible. A series of lectures delivered at the Royal Society Institution of Great Britain, at Christmas, 1896. MacMillan, London
Thomson JJ (1897) Cathode rays. Phil Mag 44:293–316
von Helmholtz H (1893) Elektromagnetische Theorie der Farbenzstreuung. Ann Physik 48:389–405
Walter B, Pohl R (1909) Weitere Versuche über die Beugung der Röntgenstrahlen. Ann Physik 29:331–354
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“This contribution is the written, peer-reviewed version of a paper presented at the conference ‘‘The Centennial of X-Ray Diffraction (1912–2012)’’, held at Accademia Nazionale dei Lincei in Roma on May 8 and 9, 2012.”
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Robotti, N. The discovery of X-ray diffraction. Rend. Fis. Acc. Lincei 24 (Suppl 1), 7–18 (2013). https://doi.org/10.1007/s12210-012-0205-1
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DOI: https://doi.org/10.1007/s12210-012-0205-1