"RADIATION SUPPLIES NUCLEAR SCIENCE SUPPLIES NUCLEAR PHYSICS"

This Cs-137/Ba-137m Isotope Generator is used to conduct experiment in schools and universities to demonstrate the properties of radioactive decay. Based on the original Union Carbide patented design, it offers exceptional performance combined with ease of use and safe operation.

Each generator contains 10uCi. of Cs-137 which represents one Exempt Quantity making it free from specific State and Federal licensing. The generator can produce up to 1000 small aliquots of the short lived Ba-137m isotope with a half-life of 2.6 minutes. Each generator is supplied with 250 ml of eluting solution (0.9% NaCl) and additional solution may be ordered separately. (see below)

The parent isotope Cs-137 with a half-life of 30.1 years beta decays (94.6%) to the metastable state of Ba-137m. This further decays by gamma emission (662 keV) with a half-life of 2.6 min. to the stable Ba-137 element. During elution, the Ba-137m is selectively "milked" from the generator leaving behind the Cs-137 parent. Regeneration of the Ba-137m occurs as the Cs-137 continues to decay, re-establishing equilibrium in less than 1 hour.

Approximately 30 minutes after elution, the residual activity of the Ba-137m sample has decayed to less than one thousandth of its initial activity making it safe for disposal. When used with the eluting solution supplied, bleed through of the parent Cs-137 is less than 50 Bq/ml, affording a long working life. Each kit is supplied with the generator, syringe, tube, 250ml of solution and a convenient storage case.

To insure maximum life, this item is shipped directly from the NRC licensed manufacturer in Oak Ridge, Tennessee. Because these products are shipped directly, Please allow up to eight business days for delivery.

Item	Order #	Price
Nuclear Isotope Generator Kit	NU-137IG	$ 240.00
Extra Eluting Solution. 250ml	ELSN	$ 18.00
Bag of 20 planchets, 1" diameter	CC-I	$ 25.00

This set of 20 calibrated radiation absorbers covers the range from 4.5 to 7400 mg/cm2 and consists of aluminum plastic and lead plates. The absorber are 2.75in. square and are designed to fit all Spectrum Techniques detector stand assemblies.

This fine set comes complete with each absorber labeled and indexed with a closing wooden storage box

The set is suitable for absorption studies with Alpha, Beta and Gamma radiation.

These are the older type Thorium Lantern Gas Mantles, These can be used as a simple and convenient check source

The mantle's for camping lanterns, that are sold in stores now usually do not contain thorium. The mantles offered here will make a Geiger counter respond when placed next to the mantle. As a health concern , it should be mentioned that care should be taken and practiced while handling the Thorium mantle during any experiments or as a check source and in the general storage of the mantle

Item

Order #

Price

Single Thorium Mantle

UNTM 01

Two Thorium Mantle 's

UNTM 02

$9.90

See Polonium 210 radiation with the naked eye, This special 1.75" screen is mounted in a cardboard frame for holding. Place your Alpha radiation source behind the screen in a darkened room and view the scintillations from the front .

This highly specialized Poly-crystalline Silver Activated Zinc Sulphide viewing screen with Crystal Clear backing, and mounted on cardboard frame

The green glow can be viewed via a magnifying eyepiece, or direct optically. Individual scintillations can be made out with 10X magnification and a good Alpha source, experiment with the distance form the source to the screen for different effects.
As with all Spintahriscopes, the best viewing is in a darkened room, and time must pass for the eyes to adjust to the dark, (about 5 minuntes) Always put the powder side towards the radioacive source.

Use any strong Alpha emitter as one of our > Polonium-210 sources <

Use a 5 to 10 power loupe to observe the bright glow spot when the source is close to the screen, or move the source back 1/4" and see the individual scintillation sparkles.

If you like to know more about the special Zinc Sulphide used on these screens, please click on the link provided below!

Item	Order #	Price
Alpha Radiation Viewer	Nuclearon-ZnS	$9.80