Lucas cell

Lucas cell

A Lucas cell is a type of scintillation particle detector. It is used to grab a gas sample, filter out the radioactive particulates through a special filter and then count the radioactive decay. It is frequently used to measure radon gas concentrations. The inside of the gas chamber is coated with silver-activated zinc sulfide or ZnS(Ag) that scintillates or shines when struck by alpha particles. A photomultiplier tube at the top of the chamber counts the photons and sends the count to the data logger or counter.

Radon itself is an inert gas. Its danger lies in the fact that it is radioactive and its radioactive daughters accumulate in the dust of enclosed areas. The radon daughters may lodge in the lungs and bombard them with alpha and beta radiation.

ee also

* Alpha particles
* Scintillation counter
* Geiger counter
* Radon gas
* Photomultiplier

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Photosensitive ganglion cell — Section of retina: light strikes first the ganglion cell layer, last the rods and cones Photosensitive ganglion cells, also called photosensitive Retinal Ganglion Cells (pRGC), intrinsically photosensitive Retinal Ganglion Cells (ipRGC) or… …   Wikipedia

  • Gary Lucas (character) — Gary Lucas is a fictional character in the novel Ice by Shane Johnson.Character introductionAstronaut Gary Lucas, stranded on the Moon after his LM ascent engine fails to fire, makes a discovery that at once saves, and changes, his… …   Wikipedia

  • Photoreceptor cell — This article is about cellular photoreceptors. For other types of photoreceptors, see Photoreceptor (disambiguation). Rods and cones redirects here. For the Blue Man Group song, see Rods and Cones (song). Neuron: Photoreceptor Cell …   Wikipedia

  • Henry Lee Lucas — Mug shot of Henry Lee Lucas. Background information Birth name Henry Lee Lucas Also known as …   Wikipedia

  • Stem cell controversy — The stem cell controversy is the ethical debate primarily concerning the creation, treatment, and destruction of human embryos incident to research involving embryonic stem cells. Not all stem cell research involves the creation, use, or… …   Wikipedia

  • Merkel cell polyomavirus — Virus classification Group: Group I (dsDNA) Family: Polyomaviridae Genus: Polyomavirus …   Wikipedia

  • Proliferating cell nuclear antigen — The assembled human DNA clamp, a trimer of the protein PCNA …   Wikipedia

  • Proton exchange membrane fuel cell — Diagram of a PEM fuel cell Proton exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary fuel cell… …   Wikipedia

  • Wilfred Lucas — est un acteur, réalisateur et scénariste canadien né le 30 janvier 1871 en Ontario (Canada) et mort le 5 décembre 1940 à Los Angeles (Californie). Sommaire 1 Biographie 2 Filmographie 2.1 …   Wikipédia en Français

  • Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea …   Wikipedia