Lima F A, Saleta M E, Pagliuca R J S, Eleotério M A, Reis R D, Fonseca Júnior J, Meyer B, Bittar E M, Souza-Neto N M, Granado E
Laboratório Nacional de Luz Síncrotron, Caixa Postal 6192, CEP 13084-971, Campinas (SP), Brazil.
Centro Brasileiro de Pesquisas Físicas, Rua Doutor Xavier Sigaud 150, CEP 22290-180, Rio de Janeiro (RJ), Brazil.
J Synchrotron Radiat. 2016 Nov 1;23(Pt 6):1538-1549. doi: 10.1107/S160057751601403X. Epub 2016 Oct 14.
The majority of the beamlines at the Brazilian Synchrotron Light Source Laboratory (LNLS) use radiation produced in the storage-ring bending magnets and are therefore currently limited in the flux that can be used in the harder part of the X-ray spectrum (above ∼10 keV). A 4 T superconducting multipolar wiggler (SCW) was recently installed at LNLS in order to improve the photon flux above 10 keV and fulfill the demands set by the materials science community. A new multi-purpose beamline was then installed at the LNLS using the SCW as a photon source. The XDS is a flexible beamline operating in the energy range between 5 and 30 keV, designed to perform experiments using absorption, diffraction and scattering techniques. Most of the work performed at the XDS beamline concentrates on X-ray absorption spectroscopy at energies above 18 keV and high-resolution diffraction experiments. More recently, new setups and photon-hungry experiments such as total X-ray scattering, X-ray diffraction under high pressures, resonant X-ray emission spectroscopy, among others, have started to become routine at XDS. Here, the XDS beamline characteristics, performance and a few new experimental possibilities are described.
巴西同步辐射光源实验室（LNLS）的大多数光束线使用存储环弯曲磁铁产生的辐射，因此目前在X射线光谱较硬部分（高于约10 keV）可使用的通量方面受到限制。最近，一台4 T超导多极波荡器（SCW）被安装在LNLS，以提高10 keV以上的光子通量，并满足材料科学界提出的需求。随后，一条新的多用途光束线在LNLS安装完成，使用SCW作为光子源。XDS是一条灵活的光束线，工作能量范围在5至30 keV之间，旨在利用吸收、衍射和散射技术进行实验。在XDS光束线开展的大部分工作集中在能量高于18 keV的X射线吸收光谱以及高分辨率衍射实验上。最近，诸如全X射线散射、高压下的X射线衍射、共振X射线发射光谱等新装置和对光子需求较大的实验，已开始在XDS成为常规实验。在此，将描述XDS光束线的特性、性能以及一些新的实验可能性。
