NONLINEARLY VIBRATIONAL ENERGY-SPECTRA OF MOLECULAR CRYSTALS
Pang Xiao-feng (庞小峰)ab, Chen Xiang-rong (陈向荣)b
a Institute of High-Energy Electronics, University of Electronic Science and Technology of China, Chengdu 610054, and International Centre for Material Physics, Chinese Academy of Sciences, Shenyang 110015, China; b Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
Abstract The nonlinear quantum vibrational energy spectra of amide-I in the molecular crystals acetanilide are calculated by using the discrete nonlinear Schr$\ddot{\rm o}$dinger equation appropriate to this kind of crystals.The numerical results obtained by this method are in good agreement with the experimental values. Meanwhile, the energy levels at high excited states have also been obtained for the acetanilide, which is helpful in researching the Raman scattering and infrared absorption properties of the this kind of crystals.
Received: 04 July 1999
Revised: 09 August 1999
Accepted manuscript online:
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
