Abstract
POWDER and single crystal diffraction of X-rays obtained from radioactive isotopes has been reported by this laboratory1–3. The source was cyclotron-produced 55Fe, laid down in a linear array on a platinum disk1 (Fig. 1). Photons studied were the Ka X-rays from 55Mn, the stable daughter product. The activity of the source was 100 mc., but this was reduced to about 19 mc. by self-attenuation and further reduced to about 13 mc. by natural decay at the time of this work. Experimental geometry used was that of the conventional diffractometer. Detection was by a proportional counter and relatively sophisticated electronics. Other workers (with the loan of this 55Fe source designed by this laboratory for use in the work reported) later also observed the more intensely diffracted beams from metallic (iron foil) samples4.
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References
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TOOTHACKER, W., PREUSS, L. & BUGENIS, C. Debye–Scherrer Powder Diffraction using 55Fe K X-rays on Lithium Fluoride. Nature 216, 255–256 (1967). https://doi.org/10.1038/216255a0
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DOI: https://doi.org/10.1038/216255a0
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