nuclear physics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what is dead time in a Geiger Muller counter

A

the minimum time interval that two consecutive counts must be separated in order to be recorded as two different events

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what substance can be used as a moderator in a nuclear reactor?

A

water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The Rutherford scattering experiment led to the discovery of

A

the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Suggest why the method of carbon dating is likely to be unreliable if a sample is less than 200 years old

A

the small drop / change in activity / count-rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Suggest why the method of carbon dating is likely to be unreliable if a sample is more than 60000 years old

A

the activity would be very small / comparable to the background
or there is very little decay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is half life?

A

the amount of time taken for the number of unstable nuclei to half

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the relationship between half life and alpha particle energy?

A

inversely proportional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is the purpose of a moderator in a nuclear reactor?

A

to slow down or absorb neutrons

the moderator slows down neutrons through elastic collisions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly