نتایج جستجو برای: impact ionisation

تعداد نتایج: 762857  

Journal: :Chemical communications 2006
Matthew A Henderson J Scott McIndoe

Addition of a lipophilic ionic liquid to non-polar, hydrocarbon solvents (such as hexane and toluene) permits electrospray ionisation mass spectrometric analysis of dissolved analytes.

Journal: :Monthly Notices of the Royal Astronomical Society 2023

Despite being thought to play an important role in galaxy evolution, the true impact of outflows driven by active galactic nuclei (AGN) on their host galaxies is unclear. In part, this may be because electron densities outflowing gas are often underestimated: recent studies that use alternative diagnostics have measured much higher than those from commonly used techniques, and consequently find...

Journal: :Astronomy and Astrophysics 2022

The energetic feedback from supermassive black holes can influence star formation at the centres of galaxies. Observational evidence for active galactic nucleus (AGN) impact on be searched in galaxies by combining ultraviolet imaging and optical integral field unit data. flux directly traces recent formation, data reveal dust attenuation, gas ionisation mechanisms, kinematics central regions ga...

Journal: :Physical Chemistry Chemical Physics 2021

Single and multiple electron ionization of PF3 is characterized quantified by a joint computational experimental investigation. Absolute cross sections are presented the properties two low-lying dication states revealed.

2008
Martin Ilgner Richard P. Nelson

Context. Recent observations of the X–ray emission from T Tauri stars in the Orion nebula have shown that they undergo frequent outbursts in their X–ray luminosity. These X–ray flares are characterised by increases in luminosity by two orders of magnitude, a typical duration of less than one day, and a significant hardening of the X–ray spectrum. Aims. It is unknown what effect these X–ray flar...

2014
Soraya León Daniel Bravo-Cavicchioli Gloria Correa-Beltrán Rodrigo A. Giacaman

2010
Martin Reynolds Gerald Midgley

Journal: :Journal of Instrumentation 2022

Abstract As liquid xenon TPCs increase in target mass while pursuing the direct detection of WIMP dark matter, technical challenges arising due to their size call for new solutions and open discussion on alternative detector concepts. Proportional scintillation allows a single-phase design evading problems related liquid-gas interface precise gas gap required dual-phase TPC. Aside from differen...

Journal: :Plasma Sources Science and Technology 2023

Abstract The spatio-temporal distribution of O and H radicals in a 90 ns pulsed discharge, generated pin–pin geometry with 2.2 mm gap, He + 2 (0.1% 0.25%), is studied both experimentally by 1D fluid modelling. density as well the effective lifetimes their excited states are measured using picosecond resolution two-photon absorption laser induced fluorescence. Good agreement between experiments ...

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