The 3, 5, 6, and 7 THz resonances of α-glycine
Publication Name
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Abstract
Using an optically thin single crystal sample, mounted in a cryostat permitting cooling to 6 K, and a synchrotron as a bright light source, exceptionally well defined absorption spectra of well-characterised α-glycine have been obtained in the spectral range 2.5–7.5 THz (approximately 80–240 cm ). Four separate resonances have been observed, respectively at 93, 152, 188, and 223 cm at the lowest temperature. Each reduces in frequency (redshifts) as temperature increases. The origin of this observed behaviour is attributed to a phonon-mediated anharmonicity in the crystal potential. −1 −1
Open Access Status
This publication is not available as open access
Volume
253
Article Number
119544