Abstract
BROMINE lamellar compound formation has been reported1,2 to be inhibited almost completely even by very slight neutron bombardment. We were therefore surprised to find that a moderator graphite that had been irradiated in carbon dioxide (25.7 × 1019 neutrons/cm2* at approximately 220° C) took up bromine very freely. This was first discovered in the course of electron spin resonance (ESR) experiments; on exposure to the halogen, the initially intense signal (4.5 × 1019 unpaired electrons/g) decayed virtually to zero within 15 min. Furthermore, we were subsequently able to demonstrate a considerable uptake of bromine gravimetrically. Lamellar compound formation was clearly taking place for we were able to observe additional lines on X-ray diffraction photographs of the brominated specimen, which were similar to those shown rather conclusively by Eeles and Turnbull3 to result from intercalation.
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ROBSON, D., HARKER, H. Partially Annealed Interstitial Material in Neutron-bombarded Graphite. Nature 219, 930–931 (1968). https://doi.org/10.1038/219930a0
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DOI: https://doi.org/10.1038/219930a0
