Hide/Show Apps

Spectroscopic modification of the Pippard relation applied for the translational mode in ammonia solid II near the melting point

This study gives our calculation for the frequency shifts 1/V(partial derivative v/partial derivative T)(P) and the specific heat C-p near the melting point in the ammonia solid II. We establish a linear relationship between C-p and 1/v(partial derivative v/partial derivative T)(P) using the Raman frequencies of the translational mode which we calculated in this system. This leads to the validity of the spectroscopic modification of the first Pippard relation in the ammonia solid II near the melting point. From this linear variation of C-p with the 1/v(partial derivative v/partial derivative T)(P) we deduce the slope values of dPm/dT near the melting point for the fixed pressures of 3.65, 5.02 and 6.57 kbar in the ammonia solid II. They are compared with the experimental dPm/dT values for this system. (c) 2004 Elsevier B.V. All rights reserved.