Radiation Flashcards
1
Q
What is count rate?
A
Number of decays recorded each second by a detector e.g Geiger- muller tube
2
Q
What is ‘activity’? And what is it measured in?
A
The rate at which a source of unstable nuclei decays , measured in becquerel (Bq)
3
Q
What is half life?
A
The time it takes from a number of nuclei of the isotope in a sample to halve
4
Q
What is a way to describe the pattern of radioactive decay?
A
Random
5
Q
What is ‘irridation’? And what happens to an irradiated object?
A
- The process of exposing an object to nuclear radiation
- irradiated object doesn’t become radioactive
6
Q
What is a nuclear equation used for?
A
- used to represent and calculate radioactive decays
7
Q
What is the particle symbol of a beta particle?
A
0
E
-1
8
Q
A
9
Q
What is the symbol for gamma radiation, alpha radiation and beta radiation?
A
Gamma - y
Alpha - a
Beta - B(with an elongated straight bit)
