The structure of liquid bromine

Neutron diffraction study of liquid iodine

“…Comparing the static structure functions for nitrogen [5], oxygen [5] and bromine [1][2][3] together with our results for iodine (see figure 2), the following observations can be made. The intensity ratio between the first and the second peak is roughly 20 for nitrogen and oxygen whereas for halogens the intensities of the first two peaks are comparable.…”

“…In recent years, computer simulation techniques [6] have succeeded in reproducing the experimental diffraction data for nitrogen and oxygen, in terms of a radial interaction potential. However experimental data on bromine [1][2][3] and chlorine [4] show peculiar features, which cannot be explained either by existing models for orientational correlations [7], or by computer simulation in terms of two body interactions [8,9], even if quadrupolequadrupole terms are included [8]. This suggests that the anomalous features of the structure function observed for bromine are common to all halogens and moreover that they are strictly related to the length of the molecular bond.…”

“…The sample temperature was held constant at T--409 K by means of an almost completely neutron transparent aluminium furnace. The temperature was chosen to have the same ratio to the critical temperature (T/To ~ 0-5) as in previous measurements on liquid bromine [1][2][3], nitrogen [4,5] and oxygen [4,5].…”

“…Since we are interested in the intermolecular correlations, which affect the structure function of the liquid mainly at low Q, we have calculated the intermolecular pair correlation function, gAA(r), from the Ha(Q) values : 1 Om~x…”

“…The development of X-rays and neutron diffraction has enabled us to study the structure of some homonuclear diatomic liquids [1][2][3][4][5] over a wide range of momentum transfer. In recent years, computer simulation techniques [6] have succeeded in reproducing the experimental diffraction data for nitrogen and oxygen, in terms of a radial interaction potential.…”