Alpha, Beta and Gamma Radiation

Sarah Collinson
Flashcards by , created over 3 years ago

AS level Physics (GCSE) Flashcards on Alpha, Beta and Gamma Radiation, created by Sarah Collinson on 05/01/2016.

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Sarah Collinson
Created by Sarah Collinson over 3 years ago
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Question Answer
What are the three types of radiation emitted during decay? - Alpha α - Beta β - Gamma γ
What is the structure of an alpha particle? 2 protons + 2 neutrons
What is the charge and mass of an alpha particle? - Charge = +2 - Mass = 4
Which element is an alpha particle the nucleus of? Helium
What is the range in air of an alpha particle? A few cm, will be stopped by skin or paper
What is a beta particle and how is it formed? An electron ejected from the nucleus when a neutron breaks down into a proton and an electron
What is the charge and mass of a beta particle? - Charge = -1 - Mass = 0 (negligible)
What is the range in air of a beta particle? 1 metre, will be stopped by a few mm of aluminium
What is a gamma ray? En electromagnetic wave
What is the charge and mass of a gamma ray? - Charge = 0 - Mass = 0
What is the range in air of a gamma ray? Unlimited in air, will be stopped by a few feet of concrete
Define ionisation Where nuclear radiation travels through a material and collides with the atoms, knocking electrons off and creating ions
Give the three types of radiation in order from most to least ionising - Alpha - Beta - Gamma