ICFA Instrumentation Bulletin SOLID AND VAPOUR PHASE UV PHOTOCATHODES FOR GASEOUS DETECTORS
نویسندگان
چکیده
We measured the relative quantum efficiency of four organic materials: tetrathiafulvalene and bis(cyclopentadienyl)magnesium in the solid phase and t-butylferrocene and n-butylferrocene in the vapour phase. The measurements were performed in the wavelength range of 150-220 nm. We also present a new quantum efficiency measurement of ethylferrocene. The three ferrocene derivatives exhibit relatively high quantum efficiency.
منابع مشابه
Metal-semiconductor-metal neutron detectors based on hexagonal boron nitride epitaxial layers
Hexagonal boron nitride (hBN) possesses extraordinary potential for solid-state neutron detector applications. This stems from the fact that the boron-10 (B) isotope has a capture cross-section of 3840 barns for thermal neutrons that is orders of magnitude larger than other isotopes. Epitaxial layers of hBN have been synthesized by metal organic chemical vapor deposition (MOCVD). Experimental m...
متن کاملA molecular dynamics simulation of liquid-vapour-solid system near triple- phase contact line of flow boiling in a microchannel
In this paper, the liquid-vapour-solid system near triple-phase contact line in a microchannel heat sink is studied numerically. Molecular dynamics (MD) method is employed aiming to get a microscopic insight into the complex liquid-vapour-solid system. In the present model, the Lennard-Jones potential is applied to mono-atomic molecules of argon as liquid and vapour, and platinum as solid subst...
متن کاملQuantitative characterization of vapour adsorption on solid surfaces and estimation of emissivity of solids using infrared thermography
The process of adsorption of water-vapour molecules on uneven (irregular) surfaces of some solid materials at room temperature is registered by infrared camera. The pronounced "thermal flame" ("thermal fire") phenomenon developing on the samples’ surfaces is exhibited and quantitatively represented. This thermal effect ranged within an order of magnitude. 3-μm-wavelength emissivities of differe...
متن کاملMOCVD Synthesis of Group III-Nitride Heterostructure Nanowires for Solid- State Lighting
Solid-state lighting (SSL) technologies, based on semiconductor light emitting devices, have the potential to reduce worldwide electricity consumption by more than 10%, which could significantly reduce U.S. dependence on imported energy and improve energy security. The III-nitride (AlGaInN) materials system forms the foundation for white SSL and could cover a wide spectral range from the deep U...
متن کاملModelling of nodular particle growth in a liquid-solid film during condensation experiments of copper-silver alloys
Silver-copper alloys are condensed in a liquid-solid domain of the phase diagram on a tilted molybdenum substrate regulated in temperature. After a droplets regime, a film which contains a monolayer of nodular solid crystals forms. The size distribution and density of the particles in the film are measured after different condensation times. Results show that in our experimental conditions a ri...
متن کامل