7D30.60 - Cosmic Ray Chamber


Full demo setup
Full demo setup



Code: 7D30.60


Demo Title: Cosmic Ray Chamber


Subject: Particle Detectors


Description:
We get bombarded by high energy particles coming from outer space everyday. Dave fills the cosmic ray chamber with ethanol and puts it on dry ice. It creates a fog of alcohol, which helps us see the paths of these particles as they leave trails of clouds in the chamber.


Procedure:

  • Using the rods and clamps, set up the led spotlights facing into the chamber
  • Mix 95% Ethanol and 5% distilled water in a 1000ml beaker
  • Pour the mix along the sponge on the top of the chamber. Make sure the entire felt fabric along the edge is wet and pour the extra liquid onto the bottom of the chamber.
  • Close the chamber with the glass top
  • Spread a layer of dry ice under the chamber floor as shown below. USE GLOVES
  • Carefully carry the chamber and place it on top of the dry ice(DISCLAIMER: It will start making a loud sound)
  • Adjust the light so that its shining just right above the bottom of the chamber.
  • Optional: Put cardboard to block out the light, so you don’t blind your students.
  • Set up a flex cam and connect it to your computer/projector


Video URL:


Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with Rutgers University and only under the direction of a trained instructor or physicist. Rutgers University is not responsible for any demonstrations performed by those using their own or others equipment, or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here, entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition, and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.


Social Media


FB f Logo blue 29

Contact Us


firstlight2 footer Physics & Astronomy
Rutgers, The State University
   of New Jersey
136 Frelinghuysen Road
Piscataway, NJ 08854-8019
(848) 445-8781
npamula@physics.rutgers.edu


Copyright 2024, Rutgers, The State University of New Jersey. All rights reserved.
Rutgers is an equal access/equal opportunity institution. Individuals with disabilities are encouraged to direct suggestions, comments, or complaints concerning any accessibility issues with Rutgers web sites to: accessibility@rutgers.edu or complete the Report Accessibility Barrier or Provide Feedback Form .