We demonstrate the use of a focused ultraviolet laser as a track calibration source in drift chambers, and specifically in a small time projection chamber (TPC). Drift chambers such as TPCs reconstruct the trajectories of charged particles by amplifying and collecting electrons produced by ionization of gas atoms with which the target particle collides. The ultraviolet laser induces a two-photo...

A pixelated silicon detector, developed originally for particle physics experiments, was used a beam profile measurement of cobalt-60 (Co-60) irradiator in water phantom. The compared to measured with pinpoint ionization chamber. differences the pixel detector and chamber relative profiles were within approximately 2% maximum, after calculating correction factors Monte Carlo simulations maximum...

The abundance of ions is an essential parameter for ion mobility and mass spectrometry instrument design the control or optimization chemical reactions with reactant ions. This information also advances study atmospheric pressure kinetics under continuous ionization, which has a role in developing trace level analyzers. In this study, ionization chamber described to measure produced by 4.9 keV,...

The purpose of this study was to review application of a consistent correction method for the solid state detectors, such as thermoluminescent dosimeters (chips (cTLD) and powder (pTLD)), optically stimulated detectors (both closed (OSL) and open (eOSL)), and radiochromic (EBT2) and radiographic (EDR2) films. In addition, to compare measured surface dose using an extrapolation ionization chambe...

PURPOSE Ion chamber dosimetry is being used to calibrate dose for cell irradiations designed to investigate photoactivated Auger electron therapy at the Louisiana State University Center for Advanced Microstructures and Devices (CAMD) synchrotron facility. This study performed a dosimetry intercomparison for synchrotron-produced monochromatic x-ray beams at 25 and 35 keV. Ion chamber depth-dose...