Beta Particles

Beta Particles

Krispian Lowe

Aim:

I will investigate how the field strength varies the deflection of Beta Particles.

Preliminary Work

I started my preliminary work because, when I started my measurements using 2 coils used in experiments to deflect electrons from and electron gun. While testing for the deflection of beta particles, I found that beta radiation was scattered in a very large cone, I can not get any readings with amount of beta radiation scattering.

So I would have to construct some type of shielding for this investigation, this is so I can measure the deflection more easily. The angle at which the beta particles are being scattered is 48o.

Deciding on the Type of Shielding

I will test for the best shielding. The best properties of the shield will be; it can be malleable to form different shapes and can be punctured, can stop radiation at a small thickness.

Equipment

- Strontium 90 beta source

- GM tube + counter

- Different thickness of different metals

- Clamps, bosses and clamp stand to hold the source and the material being tested.

Method

1. Set-up equipment as in the diagram

2. Record the thickness and the material being used.

3. Record 5 readings of the radiation count, and record them in a table

4. Replace material being tested with different material or a different sized material.

5. Repeat steps 2 to 4 as required.

Results

The background radiation reading is 2, 4, 6, 4, 5, 2. The average count is 3.8 (1dp).

Conclusion

...

Beta Particles

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