The authors investigate the proximity scaling for the nuclear part of the nucleus-nucleus potential derived from the collision of two infinite nuclear matters flowing through each other. It is found that the proximity theorem is satisfied to a good extent at each value of the projectile energy per nucleon. They simplify the interaction potential between different pairs of nuclei by the product of a geometrical factor, dependent on the radii of the interacting nuclei, and a gaussian distribution whose parameters depend on the projectile energy per nucleon.

The dielectric constant of the compounds (CH22(NH3)2FeCl4, (CH2)7(NH3)2FeCl4 and (CH2)210 (NH3)2 FeCl4 is measured at temperatures from liquid nitrogen temperature up to near the melting point of each sample. The phase transitions obtained are confirmed by the DTA thermograph. © 1986.

Compounds of the general formula (C//nH//2//n// plus //1NH//3)//2MCl//4 (where n equals 1,2,. . . . , and M is a bivalent metal of the first transition series) show two-dimensional antiferromagnetism associated with weak ferromagnetism. The compound (CH//3NH//3)//2FeCl//4 is a member of the family of the above general formula. This letter reports on the magnetic susceptibility of (CH//3NH//3)//2FeCl//4 as related to the thermal and magnetic history of the compound.