DIFFUSION CLOUD CHAMBER SYSTEMS

Diffusion Cloud Chamber
Diffusion Cloud Chamber


Cosmic Ray Shower
This portion of a cosmic ray shower was recorded near sea level. Note the group of parallel tracks.

LARGE VIEWING AREAS
Our diffusion cloud chambers have large viewing areas and are continuously sensitive, and provide an enthralling view of the subatomic world.

The chamber creates a volume of supersaturated alcohol vapor that condenses on ions left in the wake of charged particles. This is accomplished by establishing a steep vertical temperature gradient with dry ice. Alcohol evaporates from the warm topside and diffuses toward the cold bottom. The gravitationally stable temperature distribution permits a layer of supersaturation near the chamber bottom. Tracks of alcohol droplets indicate trajectories of charged particles, since each ion becomes a nucleation site for droplet condensation.

The supersaturated environment in our cloud chambers will allow the observation or the recording of a cosmic ray shower. In addition, US NRC license exempt radioactive sources (included with the chamber systems) can be used to produceCompton scattered electrons, low energy beta particles, photoelectrons, alpha particles and a Corona electrode. Fiducial marks are spaced ten centimeters apart, facilitating quantitative measurements. The informative instruction manual features background information about observations, and plots for more quantitative interpretation of what you and your students will see.

The Diffusion Cloud Chamber TEL-400CC has a sensitive area of 25 by 25 centimeters. It features a removable glass top and an insulated leveling base and ports for sources and corona electrodes as well as an anti-fog compound. Seven kilograms of dry ice and 250 milliliters of ethanol will operate this display for about eight hours. Alpha (2% alloy of natural thorium), Beta (10 microcurie carbon-14) and Gamma (5 microcurie cesium-137) sources are included with each chamber. The TEL 400DCC can also be cooled with liquid nitrogen with the addition of a liquid nitrogen cooling tray. This tray holds about 1.5L of liquid nitrogen and will cool the unit for about one hour.

A light source such as a slide projector or the TEL-400LS 300-watt halogen light source is required.

TEL 400-DCC Cloud Chamber Only $695.00

TEL 400-DCC-LN2 Liquid Nitrogen cooled Diffusion Cloud Chamber only $720.00


COMPLETE DIFFUSION CLOUD CHAMBER SYSTEM
The Complete Diffusion Cloud Chamber System includes: Diffusion Cloud Chamber, Port for inserting radioactive sources, three exempt quantity radioactive sources (Alpha source-2% alloy of natural thorium, Beta source-10 microcurie carbon-14, Gamma source-5 microcurie cesium-137) and anti fog compound.

TEL 400-DCC SYS $1,000.00

TEL 400-DCC SYS-LN2 Liquid Nitrogen Cooled Diffusion Cloud Chamber system $1,025.00





CLOUD CHAMBER ACCESSORIES

Rare Earth Magnet
This rare earth magnet will produce a 1000 gauss field, which is strong enough to bend the trajectory of low energy Beta particles.
TEL-400REM $177.00



Corona Electrode Assembly   CLICK HERE FOR PHOTO
The electrode is designed to be inserted, via the cloud chamber ports, into the sensitive region of the chamber. High voltage from the included 3kV-power supply is supplied via a standard SHV connection. The clearing field electrode will increase the sensitive layer depth, which is especially helpful in observing cosmic ray events.
TEL-400CEA $1,497.00



Light Source
This 300-watt halogen light source has been designed to work with the chamber.
TEL-400LS $641.00



Anti-Fog Compound Refill
A special anti-fog compound is included with each chamber. This is the refill for that compound.
TEL-400ACR $20.00



X-Ray Source
This 100 microcurie iron-55 source will produce 5.9 keV K-shell capture xrays.
TEL-400XS $285.00



Lecture Hall Cloud Chamber System   CLICK HERE FOR PHOTO
A large version cloud chamber more suitable for lecture hall demonstrations is also available. It has a viewing area measuring 51 x 51 cm. Fourteen kg of dry ice and 500 ml of ethanol will operate this chamber for 8 hours. Includes a source port as well as Alpha (2% alloy of natural thorium), Beta (10 microcurie carbon-14) and Gamma (5 microcurie cesium-137) sources. The TEL 400LHCC can also be cooled with liquid nitrogen with the addition of a liquid nitrogen cooling tray. This tray holds about 6L of liquid nitrogen and will cool the unit for about one hour.
TEL-400LHCC Cloud Chamber Only $1,295.00

TEL 400LHCC-LN2 Liquid Nitrogen Cooled Lecture Hall Cloud Chamber only $1,350.00

TEL-400LHCC System $1,600.00

TEL 400LHCC-LN2 Liquid Nitrogen Cooled Lecture Hall Cloud Chamber System $1,655.00