Zhou Zhongyue, Du Xuewei, Yang Jiuzhong, Wang Yizun, Li Chaoyang, Wei Shen, Du Liangliang, Li Yuyang, Qi Fei, Wang Qiuping
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People's Republic of China.
J Synchrotron Radiat. 2016 Jul;23(Pt 4):1035-45. doi: 10.1107/S1600577516005816. Epub 2016 May 16.
An undulator-based vacuum ultraviolet (VUV) beamline (BL03U), intended for combustion chemistry studies, has been constructed at the National Synchrotron Radiation Laboratory (NSRL) in Hefei, China. The beamline is connected to the newly upgraded Hefei Light Source (HLS II), and could deliver photons in the 5-21 eV range, with a photon flux of 10(13) photons s(-1) at 10 eV when the beam current is 300 mA. The monochromator of the beamline is equipped with two gratings (200 lines mm(-1) and 400 lines mm(-1)) and its resolving power is 3900 at 7.3 eV for the 200 lines mm(-1) grating and 4200 at 14.6 eV for the 400 lines mm(-1) grating. The beamline serves three endstations which are designed for respective studies of premixed flame, fuel pyrolysis in flow reactor, and oxidation in jet-stirred reactor. Each endstation contains a reactor chamber, an ionization chamber where the molecular beam intersects with the VUV light, and a home-made reflectron time-of-flight mass spectrometer. The performance of the beamline and endstations with some preliminary results is presented here. The ability to detect reactive intermediates (e.g. H, O, OH and hydroperoxides) is advantageous in combustion chemistry research.
中国合肥国家同步辐射实验室（NSRL）建造了一条基于波荡器的真空紫外（VUV）光束线（BL03U），用于燃烧化学研究。该光束线与新升级的合肥光源（HLS II）相连，能提供能量范围在5 - 21 eV的光子，当束流为300 mA时，在10 eV处的光子通量为10¹³ 光子·秒⁻¹。该光束线的单色仪配备了两块光栅（200线·毫米⁻¹ 和400线·毫米⁻¹），对于200线·毫米⁻¹ 的光栅，在7.3 eV处的分辨能力为3900，对于400线·毫米⁻¹ 的光栅，在14.6 eV处的分辨能力为4200。该光束线服务于三个终端站，分别设计用于预混火焰、流动反应器中的燃料热解以及喷射搅拌反应器中的氧化研究。每个终端站都包含一个反应腔室、一个分子束与真空紫外光相交的电离室以及一台自制的反射式飞行时间质谱仪。本文介绍了该光束线和终端站的性能以及一些初步结果。检测反应中间体（如H、O、OH和氢过氧化物）的能力在燃烧化学研究中具有优势。
