Electron Multiplier Pulse-Height Distributions for keV Ions

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...

Investigation of the operation of Thick Gas Electron Multiplier and Electron Multiplier Assembly for alpha particle detection

In this study, the detection of alpha particles in the high current mode is investigated in the presence of two gaseous electron multipliers in the micro-pattern structures. Thick Gas Electron Multiplier (TGEM) and an Electron Multiplier Assemblies (EMA) were designed and constructed as amplification gap in the detector chamber. An ion chamber is employed to measure the current of interaction b...

Cross sections for ionization of gases by 10-2000-keV He+ ions and for electron capture and loss by 5-350-keV He+ ions.

Energy loss by keV ions in silicon.

Using silicon photodiodes with an ultrathin passivation layer, the average total energy lost to silicon target electrons (electronic stopping) by incident low energy ions and the recoil target atoms they generate is directly measured. We find that the total electronic energy deposition and the ratio of the total nuclear to electronic stopping powers for the incident ions and their recoils each ...

Ionization cross sections for 10-300-keV/u and electron-capture cross sections for 5-150-keV/u 3He2+ ions in gases.