TY - JOUR
T1 - Role of rotational and translational local modes in vibrational relaxation in solids
T2 - A study of NH and ND in solid Ar
AU - Gerber, R. B.
AU - Berkowitz, M.
PY - 1977
Y1 - 1977
N2 - A quantitative model for vibrational relaxation of impurity molecules in host crystals is presented, and applied to the vibrational relaxation of NH and ND in solid Ar. Realistic impurity-host interaction and impurity-cage geometry are employed. It is shown that impurity rotation is the dominant receiving mode in the relaxation, and only a small fraction of the energy released goes directly into phonon modes. The results explain the faster relaxation of NH compared with ND and the temperature independence of the measured decay rates.
AB - A quantitative model for vibrational relaxation of impurity molecules in host crystals is presented, and applied to the vibrational relaxation of NH and ND in solid Ar. Realistic impurity-host interaction and impurity-cage geometry are employed. It is shown that impurity rotation is the dominant receiving mode in the relaxation, and only a small fraction of the energy released goes directly into phonon modes. The results explain the faster relaxation of NH compared with ND and the temperature independence of the measured decay rates.
UR - http://www.scopus.com/inward/record.url?scp=11744292269&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.39.1000
DO - 10.1103/PhysRevLett.39.1000
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AN - SCOPUS:11744292269
SN - 0031-9007
VL - 39
SP - 1000
EP - 1004
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
ER -