Synchrotron radiation spectral distribution

Figure 10 Spectral distribution of X-ray radiation generated by bending magnet (1), undulator (2) and wiggler (3) of a synchrotron and by a conventional X-ray tube with a Cu target. Brilliance and quantum energy are given on logarithmic scales. (Ref. 62. Reproduced by permission of Russian Academy of Science)...

The critical wavejpngth defined by Eq. (2-4) can be used for the characterization of the spectral distribution of the synchrotron radiation. It is a measure (see Fig. 9) for the lower limit of the wave length distribution. By substituting the value for y into Eq. (2-4) one obtains... 

Fig. 9. Spectral distribution of the synchrotron radiation. The parameter gives the energy of the circling particles...

Fig. 15. Comparison of the spectral distribution of synchrotron radiation generated by a bending magnet, a wiggier and a undulator...

Fig. 16. Spectral distribution of synchrotron radiation in comparison with that of other sources...

Fig. 17 a and b. Comparison of the angular distribution (a) and spectral distribution (b) of synchrotron radiation with that of a X-ray tube... 

Refinements in vuv spectroscopy W, aided by the development of synchrotron radiation (7 ) and equivalent-photon electron-impact ( ) tunable light sources, and closely related advances in photoelectron, fluorescence-yield, and electron-ion coincidence spectroscopy measurements of partial cross sections (9), have provided the complete spectral distributions of dipole intensities in many stable diatomic and polyatomic compounds. Of particular importance is the experimental separation of total absorption and ionization cross sections into underlying individual channel contributions over very broad ranges of incident photon energies. 

The spectral distribution of synchrotron radiation is continuous and depends on a number of factors. Two that are particularly important are the electron energy (expressed in GeV 10 eV) and the bending radius R (in meters) of the orbit. These are related by the critical energy given by ... 

Photoelectron spectroscopy (PES) is a technique based on the photoelectric effect, which was first documented in 1887 by Hertz and explained in 1905 by Einstein. The use of soft x-ray sources led to the development of x-ray photoelectron spectroscopy (XPS), originally known as electron spectroscopy for chemical analysis (ESCA) [1], indicating the applicability of the method to studies of chemical properties. In parallel with the development of XPS, ultraviolet photoelectron spectroscopy (UPS) [2], i.e., PES based on ultraviolet photon sources, emerged as a tool for studying the valence electronic structure of gaseous and solid samples. However, the increasing use of the continuous spectral distribution of synchrotron radiation [3,4] as a photon source has made the historical terminology less... 

Spectral distributions (intensity versus wavelength) of the synchrotron radiation for different electron energies... 

Figure 1. Spectral distribution of synchrotron radiation from the SPEAR storage ring with a radius of...

Tomboulian DH, Hartman PL (1956) Spectral and angular distribution of ultraviolet radiation from the 300-m.e.v. Cornell synchrotron. Phys Rev 102 1423-1447 Toney MF, Howard JN, Richer J, Borges GL, Gordon JG, Melroy OM, Wiesler DG, Yee D, Sorensen LB (1994) Voltage-dependent ordering of water molecules at an electrode-electrolyte interface. Nature... 

---