Summary
The neutron diffraction pattern of liquid bromine near the melting point has been obtained up to a very large value of 4π sin θ/gl by the crystal spectrometer installed at the Ispra-1 reactor. The analysis of the intensity data leads to a radial distribution function showing clearly that, in the liquid at room temperature, the bromine molecules are not freely rotating. Moreover, on a short range order scale, it seems that the main features of the structure of the parent solid, are preserved during the melting process.
Riassunto
La figura di diffrazione del bromo liquido nelle vicinanze della temperatura di fusione è stata ottenuta fino a grandi valori della quantità 4π sin θ/λ, per mezzo dello spettrometro a cristallo per neutroni installato presso il reattore Ispra 1. L’analisi dei dati di intensità porta a una funzione di distribuzione radiale che mostra ehiaramente che, nello stato liquido a temperatura ambiente, le molecole di bromo non ruotano libermente. Sembra inoltre che le caratteristiche principali della struttura del bromo solido si conservino pressocchè inalterate durante il processo di fusione, almeno per quanto riguarda l’ordine a corto raggio.
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Preliminary results of this paper wave comunicated at the Symposium on Electron and Neutron Diffraction in Kyoto, Japan (September, 1961), as well as at the « XLVII Congresso Nazionale di Fisica » in Como (November 1961).
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Caglioti, G., Ricci, P.P. The structure of liquid bromine. Nuovo Cim 24, 103–110 (1962). https://doi.org/10.1007/BF02785763
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DOI: https://doi.org/10.1007/BF02785763