A simple and inexpensive method for determination of vlbratlonal transition moment directions in infrared spectroscopy is presented. The technique is based on the alignment of molecules in squeezed polyethylene sheets and the spectra are recorded with natural light. In many cases the method is able
A frequency spectrum moment method for the study of the vibrational properties of amorphous substances
β Scribed by O. Weres
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 228 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
A previously dcveloprd method for generating the moments of the frequency spectra df cdbichtliozs is extended to amorphoos substimes.
The extension invokes little approximation and allows one to calculate the moments in terms of the interatomic potent&4 function and low-order atomic distribution functions. A frequency spectrum cluster ehansion technique with well defined Lirnits of error may be derived from it.
π SIMILAR VOLUMES
A procedure based on non-negative linear least squares is used to investigate statistical uncertainties in "quantized" vibrational distributions resulting from the inversion of statistically uncertain classical trajectory generated moments of vibrational energy distributions. Test cases considered i
INTEREST in measuring the surface impedance of metals at high frequencies and low temperatures arises in connection with the study of the phenomena of superconductivity and the anomalous skin effect and, recently, also of cyclotron resonance. A number of methods for measuring the surface impedance o