Moderator - Revision history

Ellen References at 18:41, 22 November 2019

2019-11-22T18:41:17Z

Ellen References at 17:37, 8 November 2019

2019-11-08T17:37:06Z

NRJC at 12:16, 11 March 2019

2019-03-11T12:16:26Z

NRJC: Created page with "==Key Stage 4== ===Meaning=== A moderator is a substance used in nuclear fission reactors to slow fast moving neutrons to become Ther..."

2019-03-11T11:43:48Z

Created page with "==Key Stage 4== ===Meaning=== A moderator is a substance used in nuclear fission reactors to slow fast moving neutrons to become Ther..."

New page

==Key Stage 4==
===Meaning===
A [[moderator]] is a [[substance]] used in [[Nuclear Fission Reactor|nuclear fission reactors]] to slow fast moving [[neutron]]s to become [[Thermal Neutron|thermal neutron]]s.

===About Moderators===
: [[Moderator]]s [[Absorb (Physics)|absorb]] some of the [[energy]] of fast moving [[neutron]]s which slows them down to a [[speed]] where they are called [[Thermal Neutron|thermal neutron]]s which are able to be captured by [[Nuclear Fission|fissionable]] [[isotope]]s.
: Without a [[moderator]] in a [[Nuclear Reactor|nuclear reactor]] the [[neutron]]s released from each [[Nuclear Fission|fission]] event would be moving too fast to cause a second [[Nuclear Fission|fission]] event so a [[Nuclear Chain Reaction|chain reaction]] would not be possible.

← Older revision		Revision as of 18:41, 22 November 2019
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	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Moderator, page 129, GCSE Physics; Student Book, Collins, AQA '']		:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Moderator, page 129, GCSE Physics; Student Book, Collins, AQA '']
		+
		+	====Edexcel====
		+
		+	:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Moderators, page 174, GCSE Physics, CGP, Edexcel '']

← Older revision		Revision as of 17:37, 8 November 2019
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	\| style="height:20px; width:200px; text-align:left;" \|As a fast moving [[neutron]] passes through a [[moderator]] it collides with [[atom]]s in the [[moderator]] passing on some of their [[energy]] and slowing down. After several collisions a [[neutron]] becomes slow enough to be captured by a [[Nuclear Fission\|fissionable]] [[isotope]]. At this point it is called a [[Thermal Neutron\|thermal neutron]].		\| style="height:20px; width:200px; text-align:left;" \|As a fast moving [[neutron]] passes through a [[moderator]] it collides with [[atom]]s in the [[moderator]] passing on some of their [[energy]] and slowing down. After several collisions a [[neutron]] becomes slow enough to be captured by a [[Nuclear Fission\|fissionable]] [[isotope]]. At this point it is called a [[Thermal Neutron\|thermal neutron]].
	\|}		\|}
		+
		+	===References===
		+	====AQA====
		+
		+	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Moderator, page 129, GCSE Physics; Student Book, Collins, AQA '']

← Older revision		Revision as of 12:16, 11 March 2019
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	: [[Moderator]]s [[Absorb (Physics)\|absorb]] some of the [[energy]] of fast moving [[neutron]]s which slows them down to a [[speed]] where they are called [[Thermal Neutron\|thermal neutron]]s which are able to be captured by [[Nuclear Fission\|fissionable]] [[isotope]]s.		: [[Moderator]]s [[Absorb (Physics)\|absorb]] some of the [[energy]] of fast moving [[neutron]]s which slows them down to a [[speed]] where they are called [[Thermal Neutron\|thermal neutron]]s which are able to be captured by [[Nuclear Fission\|fissionable]] [[isotope]]s.
	: Without a [[moderator]] in a [[Nuclear Reactor\|nuclear reactor]] the [[neutron]]s released from each [[Nuclear Fission\|fission]] event would be moving too fast to cause a second [[Nuclear Fission\|fission]] event so a [[Nuclear Chain Reaction\|chain reaction]] would not be possible.		: Without a [[moderator]] in a [[Nuclear Reactor\|nuclear reactor]] the [[neutron]]s released from each [[Nuclear Fission\|fission]] event would be moving too fast to cause a second [[Nuclear Fission\|fission]] event so a [[Nuclear Chain Reaction\|chain reaction]] would not be possible.
		+
		+	{\| class="wikitable"
		+	\|-
		+	\|[[File:Moderator.png\|center\|400px]]
		+	\| style="height:20px; width:200px; text-align:left;" \|As a fast moving [[neutron]] passes through a [[moderator]] it collides with [[atom]]s in the [[moderator]] passing on some of their [[energy]] and slowing down. After several collisions a [[neutron]] becomes slow enough to be captured by a [[Nuclear Fission\|fissionable]] [[isotope]]. At this point it is called a [[Thermal Neutron\|thermal neutron]].
		+	\|}