This listing is for one precut 2 inch / 50mm diameter (round) Eljen Technology EJ-440 ZnS(Ag) Scintillation Disk. These disks are used for building an Alpha Radiation Detector or when making a Spinthariscope for viewing Alpha particle scintillation with the eye.
These High Quality 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 also be built into a light-tight housing (or completely darkened room or other enclosure) with an alpha source to view Alpha scintillation directly by the naked eye. Much information about making these devices is available on the internet by searching “Spinthariscope”.
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. 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. Please see my other listings for other custom scintillation detector building and related items.
|
PROPERTIES |
EJ-440 |
|
Light Output (%
Anthracene) |
300 |
|
Wavelength of
Maximum Emission (nm) |
450 |
|
Decay Time (ns) |
200 |
|
Phosphor Density
(mg/cm2) |
3.25 ± 0.25 |
|
EJ-440, Thickness
of Polyester Film (mm) |
0.25 |
|
EJ-440, Density of
Polyester Film (mg/cm2) |
36 |
I also have alpha-film (rad-film) to fit these here: https://www.ebay.com/itm/253055216280
And I have a 3X3" ZnS(Ag) film available here: https://www.ebay.com/itm/254678080776
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.
I have tons of other radiation detection related equipment listed, so please check out my other items. I am always adding new items in this category, so please don't forget to add me to your favorites list and come back often!
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.
I SHIP VERY FAST, USUALLY BY THE NEXT DAY. I only ship to the address on your PayPal account.
This listing is for ONLY ONE 2” ROUND DISK of ZnS(Ag) FILM, no other items are included.