The Active Tissue Equivalent Dosimeter (ATED) is a low-cost, easy-to-use and compact tissue equivalent proportional counter designed for use aboard spacecraft, satellites, aircraft, unmanned aerial vehicles high-altitude balloons. ATED was rigorously tested at particle accelerator facilities utilizing heavy ions of charge energy similar to Galactic Cosmic Rays (GCRs). Upon completion the ground...

Liquid xenon (LXe) is a well-studied detector medium to search for rare events in dark matter and neutrino physics. Two-phase time projection chambers (TPCs) can detect electronic nuclear recoils with energy down kilo-electron volts (keV). In this paper, we characterize the response of single-phase liquid proportional scintillation counter (LXePSC), which produces electroluminescence directly l...

A new instrument for direct measurements of heavy cosmic ray nuclei (oxygen to iron) in the energy range from about 10 to several 10 eV is described. The detector consists of a counter telescope with a proportional tube array and a transition radiation detector. Single wire proportional tubes are used which allow operation in the low pressure environment of stratospheric balloons without requir...

We have designed and fabricated the first single-wafer proportional micro control valve with built-in capacitive displacement sensing. The displacement sensor can facilitate high-speed active proportional control of gas flow through the valve. This is an essential requirement for non-invasive blood pressure waveform monitoring based on following the arterial pressure with a counter pressure. We...

Abstract The JRC applied six measurement techniques to standardise the activity of an 241 Am solution in frame 2003 key comparison CCRI(II)-K2.Am-241. methods used were alpha-particle counting at a defined small solid angle, high-efficiency particle and photon with windowless 4π CsI(Tl) sandwich spectrometer, alpha pressurised proportional counter, alpha-gamma coincidence sum counter NaI(Tl) we...

An important class of sequential-sampling models for response time (RT) assumes that evidence for competing response alternatives accrues in parallel and that a response is made when the evidence total for a particular response exceeds a criterion. One member of this class of models is the Poisson counter model, in which evidence accrues in unit increments and the waiting time between increment...