Fluorescence emission from CsI(Tl) crystals induced by high-energy heavy ions

Organic matter from biofilter nitrification by high performance size exclusion chromatography and fluorescence excitation-emission matrix

A combination of high performance size exclusion chromatography with organic carbon detector and ultraviolet detector coupled with peak-fitting technique and fluorescence excitation-emission matrix spectrometry applied fluorescence regional integration method was conducted to determine the characteristics of organic matter during nitrification. The batch scale of bionet nitrification without or...

Fragmentation of Very High Energy Heavy Ions

We present experimental results on fragmentation charge-changing cross sections of 158 A GeV lead ions (charge Z = 82e) incident on Cu and CR39 targets. To detect and identify the relativistic ions, the nuclear track detector CR39 was used. When an ion crosses a nuclear track detector foil, it produces damages at the level of molecular bonds, forming the so called “latent track”. During the che...

Electron Emission from Surfaces Induced by Slow Ions and Atoms

Electron emission from carbon foils induced by keV ions

We have measured yields of electrons emitted in the forward and backward directions from ultrathin carbon foils due to 10–100 keV atomic and molecular projectiles. In general, electron yields are higher in the forward than in the backward direction. Their behavior with projectile type and energy can be explained by a competition of a forward peaked angular distribution of initial ionization eve...

Ultrasound-Induced Gradient Crystals Observed by High-Energy X-rays

High-energy X-ray scattering (90 keV) has been performed at the high-energy beamline ID15 at the European Synchrotron Radiation Facility, Grenoble, on perfect Si crystals excited by compressional ultrasound waves in the [111] direction. Two-dimensional intensity maps of the 351 Bragg peak reveal a purely longitudinal distortion of the lattice with respect to the applied distortion field, which ...