Sources and properties of SR

Studies of the properties of the radiation from accelerated charges extend over the last 100 years. Extensive theoretical work on the radiation effects in circular electron accelerators has been done by Schwinger (1949) and Sokolov and Ternov (1968) and the theory is reviewed in Jackson (1975). 

Bonn ELSA (Bonn Univ) 3.5 Partly dedicated 

Hiroshima HISOR (Hiroshima Univ) 1.5 Proposed/dedicated 

Nishi Harima SPRING-8 (Sci Tech Agency) 8.0 Dedicated  

---

Advancements are continuous, and in the future, thanks to the properties of SR, the existing limits of FTIR imaging should be overcome. There is thus a brilliant future for IRSR spectromicroscopy and imaging. The SR has advantages over other systems and, thanks to the continuous improvement in the performance of these light sources, important results are expected in biological and biomedical applications. 

The development of ion-guides has provided an ion-source that is both very fast and in principle independent of the chemical properties of the element under study [38]. This opens two regions of particular nuclear interest for laser spectroscopical studies nuclear size and moments of isomers and the shape transition at N=59, showing a coexistence of spherical and deformed bands in for example Sr and i Zr [39]. It is thus of interest to extend the systematic measurements performed in Rb and Sr... 

The principles of SR and the practicalities of producing it have now been covered. The radiation emanates with defined spectral characteristics from a finite source size and with a finite angular divergence. Macromolecular crystallography exploits some or all of these properties depending on the size of the crystal sample, the unit cell and the crystal sample mosaicity. The terms flux, intensity, brightness and brilliance are used to describe the various aspects of SR and its use in experiments. 

Section A3.1 provides details of elemental properties for hydrogen through uranium. The table provides for each element the respective atomic number and weight, the density at STP, the mass absorption coefficients at three selected wavelengths of interest for routine data collection at SR sources and finally the wavelengths of the K and L X-ray absorption edges. 

The chemical properties of the radiation source. When a radioactive nuclide is ingested, its capacity to cause damage depends on how long it remains in the body. For example, both j Kr and 3°Sr are p-particle producers. Because krypton, being a noble gas, is chemically inert, it passes through the body quickly and does not have much time to do damage. Strontium, on the other hand, is chemically similar to calcium. 

---