
TY  - JOUR
A1  - Pandey, Sadhana 
A1  - Trikha, SK 
T1  - Rotational Motion of the NH+4 Ion in Ammonium Chloride
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1984
VL  - 37
IS  - 2
SP  - 197
EP  - 208
KW  - 
UR  - https://doi.org/10.1071/PH840197 
N2  - 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). 
ER  -

