ZnS(Ag) Over Thin Film Polyester 2” Dia Alpha Radiation Detection Spinthariscope

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Precut 2” round ZnS(Ag) over Thin Film<br>Polyester for Alpha Radiation Detection.<br>This listing is for one precut 2 inch / 50mm diameter (round) Eljen Technology EJ-440<br>ZnS(Ag) Scintillation Disk. These disks are used for building an Alpha Radiation Detector or when making a Spinthariscope for viewing Alpha<br>particle<br>scintillation<br>with the eye.<br>These disks can be added to the end of a plastic scintillator to make an Alpha/Beta/Gamma Detector, or directly to the end of a PMT to make an Alpha Detector. They can be used as is on two inch or larger scintillator blocks and/or PMTs, or cut down for smaller scintillator blocks and/or PMTs. They can be built into a housing all by themselves to view Alpha scintillation directly by the naked eye. Much information about making these devices is available on the internet simply by searching “Spinthariscope”.<br>The precut ZnS(Ag) disk is ready to be installed over the end of a 2” or larger PMT or scintillation crystal, like those sold in some of my other listings.<br>They are not necessary for Gamma Only Detectors, but are used often for Alpha Scintillation Detectors built with “End Windows”. Two or more layers of Rad-Film should also be used over the ZnS disk to block light from entering the detector.<br>Please see my other listings for other custom scintillation detector building and related items.<br>PROPERTIES<br>EJ-440<br>Light Output (% Anthracene)<br>300<br>Wavelength of Maximum Emission (nm)<br>450<br>Decay Time (ns)<br>200<br>Phosphor Density (mg/cm<br>2<br>)<br>3.25 ± 0.25<br>EJ-440, Thickness of Polyester Film (mm)<br>0.25<br>EJ-440, Density of Polyester Film (mg/cm<br>2<br>)<br>36<br>I also have alpha-film (rad-film) to fit these here:<br>https://www.ebay.com/itm/253055216280<br>And I have a 3X3" ZnS(Ag) film available here:<br>https://www.ebay.com/itm/254678080776<br>Please note: When combining item for purchase, please request an invoice from seller BEFORE making payment, so that I can adjust any duplication or overage of shipping charges.<br>I have tons of other radiation detection related equipment listed, so please check out my<br>other items<br>.<br>I<br>am always adding new items in this category, so please don't forget to add me to your<br>favorites list<br>and come back often!<br>No other items shown other than the ZnS(Ag) disk are sold with this listing. The PMT and Scintillator block are shown for demonstration purposes only.<br>I SHIP VERY FAST,<br>USUALLY<br>BY THE NEXT DAY. I only ship to the address on your PayPal account.<br>This listing is for ONLY ONE 2” ROUND DISK of ZnS(Ag) FILM, no other items are included.<br>