1. Exercises Using Bubble Chamber Photographs

2. 1. What is the direction of the magnetic field if the incoming beam is of K- particles?

3. 2. How many charged particles leave point A ?

4. 3. Is the event at point A, a decay or a collision ?

5. B It is a neutral particle
4. What can we say about the particle that produces the event at point B; what is it’s charge? B
It is a neutral particle

6. p +
p -
5. The particles leaving the decay point B are pions p What are their charges? B

7. E D C A From the kink at point C 6. Connect point D with E
Does the neutral particle that decays at point D come from point C or A ? A C D E
From the kink at point C
For justification of method, click here:

8. E D The positive particle
7. Which of the particles that travel between points D and E has the larger momentum? D E
The positive particle

9. C A W - 8. What particle travels between points A and C?
W -, K -, S + or X - ? A C
W -