
%0 Journal Article
%A Pandey, Sadhana 
%A Trikha, SK 
%T Rotational Motion of the NH+4 Ion in Ammonium Chloride
%J Australian Journal of Physics
%D 1984/04/01
%V 37
%N 2
%P 197-208
%K 
%R https://doi.org/10.1071/PH840197
%U https://www.publish.csiro.au/paper/PH840197 
%X The rotational motion of the ammonium ion in NH4CI at low temperature under the influence of its nearest neighbours has been studied using a computer simulation technique. The Lennard Jones potential is used as the representative interaction between NHt and CI-. Three values of the time increment At occurring in the algorithm equation are taken to illustrate the three-dimensional effect on the rotational dynamics of the NH: ion. In each case we notice a well defined transition gap around = 1·25 separating phases II and III which are known from the literature. The libration frequency of the ammonium ion is found to be 1"0; 170 em-1, corresponding to the transition temperature of 242 K, which is in agreement with the Raman spectra study by Couzi et af. (1973). 
