Lil Help here please (1 Viewer)

[テリー]

Are nuclear fission reactors and fission reactors the same thing??

got more questions but this is the main thing atm

 

[テリー]

lololol no offence but that reply was so useless, srsly no offence, jst a fact

well.. any1 know whether theres a difference?

 

[BlackJack]

Same thing. You can't get fission reactors without it being nuclear.

 

[z600]

yepp same thing...and minn is useless

 

[テリー]

ok thx

Q2: How exactly does heavy water or graphie blocks help?

 

[xiao1985]

From my almost decayed memory of nuclear physics:

Either of them are used as a moderator.
Heavy water is used instead of normal water because it slow down the neutron efficiently, without absorbing too many neutrons and risk losing critical mass.
At the same time, D2O can also be used as a coolant to cool the temperature of reactor.

IIRC, graphite achieves similiar effect in terms of slowing neutrons down. However, its cooling ability is not as good (?) as D2O.

 

[z600]

From my almost decayed memory of nuclear physics:

Either of them are used as a moderator.
Heavy water is used instead of normal water because it slow down the neutron efficiently, without absorbing too many neutrons and risk losing critical mass.
At the same time, D2O can also be used as a coolant to cool the temperature of reactor.

IIRC, graphite achieves similiar effect in terms of slowing neutrons down. However, its cooling ability is not as good (?) as D2O.

yeepp thats correct and not to mention the graphites are a not a movable as the D2O

 

[テリー]

ok.

Q3 (last i think/hope)
What the hell is natural radioactivity?

 

[テリー]

Well how come u didnt answer my question?

 

[テリー]

Stranger XD

 

[Forbidden.]

All I know is fusion combines lighter elements in greater ones while fission breaks down heavy elements into lighter ones and both release energy in the process.

 

[BlackJack]

Natural radioactivity means that some atoms are unstable as found in nature, and will decay.