Frequency distribution function of solid ammonia | Zendy

Goyal P. S. | Zendy; Dasannacharya B. A. | Zendy; Thaper C. L. | Zendy; Iyengar P. K. | Zendy

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Frequency distribution function of solid ammonia

Author(s) -

Goyal P. S.,

Dasannacharya B. A.,

Thaper C. L.,

Iyengar P. K.

Publication year - 1972

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2220500232

Subject(s) - debye function , debye , anharmonicity , distribution function , debye model , specific heat , distribution (mathematics) , thermodynamics , function (biology) , chemistry , materials science , atomic physics , physics , condensed matter physics , debye length , plasma , nuclear physics , mathematical analysis , mathematics , evolutionary biology , biology

The frequency distribution function, g (ω), for solid ammonia has been derived from neutron inelastic scattering experiments at 106° K. It is used to calculate the specific heat and to analyse it in terms of Debye temperatures for translational and rotational parts. A comparison of the Debye temperatures with those obtained from the measured specific heat shows an excellent agreement up to 100°K, suggesting that the anharmonicity is not large below this temperature. Translational and rotational moments of the frequency distribution function calculated from the obtained g (ω) and the specific heat data are found to agree within about 10%.

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