Monte Carlo simulation of liquid water in a magnetic field

A Monte Carlo simulation of liquid water was carried out in order to study the influence of an external magnetic field on the internal energy and heat capacity of pure water. Analysis of the structure of water was made by cal culating the radial distribution function of water molecules. A multipeak f unction of the magnetic effect versus magnetic flux density was found. A si gnificant change in the internal energy and heat capacity occurred at a mag netic flux density of about 0.2 T. In particular, when the magnetic flux de nsity increases, the second peak of the water-water radial distribution fun ction increases markedly. This has been demonstrated by calculations for bo th 64- and 125-molecule systems. (C) 2000 American Institute of Physics. [S 0021-8979(00)05915-6].