Gaseous detectors of ultraviolet and visible photons

Photomethanation of Gaseous CO2 over Ru/Silicon Nanowire Catalysts with Visible and Near‐Infrared Photons

Gaseous CO2 is transformed photochemically and thermochemically in the presence of H2 to CH4 at millimole per hour per gram of catalyst conversion rates, using visible and near-infrared photons. The catalyst used to drive this reaction comprises black silicon nanowire supported ruthenium. These results represent a step towards engineering broadband solar fuels tandem photothermal reactors that ...

Gaseous Dark Matter Detectors

Dark Matter detectors with directional sensitivity have the potential of yielding an unambiguous positive observation of WIMPs as well as discriminating between galactic Dark Matter halo models. In this article, we introduce the motivation for directional detectors, discuss the experimental techniques that make directional detection possible, and review the status of the experimental effort in ...

Streamers in MSGC's and other gaseous detectors

In this paper we describe the formation and propagation of streamers under different conditions and in different gas mixtures. We discuss how streamers may limit the operational capabilities of various gaseous detectors. 1 . Introduction Wire chambers, proposed by G. Charpak et al. [1], revolutionized detector development. They are widely used now in many experiments and have made possible many...

Advances in gaseous time-of-flight detectors

Timing Resistive Plate Chambers (RPCs) are planar gaseous detectors made with a combination of metallic and resistive electrodes, delivering time resolutions around 50 ps σ and efficiency up to 99% for MIPs. In this work we describe the development and test of an electrically shielded timing RPC array for crosstalk-free time measurements in high granularity time-of-fight (TOF) systems, as the I...

European Ultraviolet-visible Observatory