ABSTRACT
We study the geometric phase (GP) effect of D2+ produced by the encirclement of the dissociated nuclear wavefunction around the light-induced conical intersection (LICI) using a linearly polarized two-color (800 nm and its third harmonic at 266 nm) synthesized laser field. We calculate the photofragment momentum distribution of D2+ with the random orientation by solving the time-dependent Schrödinger equation. We reveal the GP effect that manifests as the Aharonov-Bohm-like interference in the photofragment angular distribution along the direction perpendicular to the linear polarization axis. Our work deepens the understanding of the physical mechanisms of the molecular dynamics when driven by the synthesized strong laser field.
ABSTRACT
OBJECTIVE:To detect the contents of chlorogenic acid and rutoside in Saussurea involucrate,and to optimize the decoction and extraction technology of S. involucrate from different producing areas. METHODS:The contents of chlorogenic acid and rutoside in 10 batches of S. involucrate from different producing areas were determined by HPLC. L9(34)orthogonal experiment was used to optimize the water amount,decoction times and decoction time using comprehensive score of extraction transport rate of chlorogenic acid and rutoside as index. The verification test was also conducted. RESULTS:The contents of chlorogenic acid and rutoside in 10 batches of S. involucrate were 0.380%-0.546% and 0.334%-0.617%;the optimal decoction technology was as follows as the amout of crude material of S. involucrate 100 g,soaking for 20 min,decocting for 3 times,12,10 and 10 fold of water,decocting 45,30 and 30 min,respectively. The extraction transfer rates of chlorogenic acid and rutoside were 96.2%(RSD=2.66%,n=3)and 89.3%(RSD=3.31%,n=3)in verification test. CONCLUSIONS:For S. involucrate from different producing areas,the contents of effective components are different;optimized decoction and extraction technology is stable and feasible.
