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Which of the following is the name given to a situation in which one fission reaction innstigates exactly one more fission reaction?
Wiki User
∙ 13y ago
A runaway chain reaction.
It is called super criticality, with KEffective > 1.
When one fission reaction instigates more than one or more fission reactions it is called a Chain Reaction.
KEffective is the neutron multiplication factor which is an indication of whether a reaction is stable (=1), increasing (>1), or decreasing (<1). Related to this is the reactor period, which is the time it take for the power to change by a factor of e, 2.71828. At KEffective = 1, period is infinity, so the power is stable.
In a weapon, KEffective is almost 2.5, because the average number of neutrons released per fission event is 2.5. In this case, if each neutron causes another fission event, the reactor period is extremely short, on the order of milliseconds, or even shorter, and the power becomes extremely large in a very short period of time.
Complicating this is the tendency for the core to become subcritical (KEffective < 1) due to thermal or density change, which is why the "art" of nuclear weapon design is more involved in how to hold the core together, than it is in actually assembling the core.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoA controlled chain reaction is the name given to a situation in which one fission reaction instigates exactly one more fission reaction.
Meme Warrior
April Powers
a controlled chain reaction - Apex
Anonymous
yeet
Colton Lynn
ells
CO2 INSANITY
A controlled chain reaction Apex just told me after getting it wrong 😤
Anonymous
katieclaire
for QUIZ 5.3.3 Apex its a runaway chain reaction.
Magali Rodriguez
Wiki User
∙ 8y agoIt is called criticality, with KEffective = 1.
controled
Wiki User
∙ 13y agoYou don't say what "the following" are, but it sounds like a steady state chain reaction
jotinacastillo
a controlled chain reaction!! APEX:)
Wiki User
∙ 8y agoa controlled chain reaction
Wiki User
∙ 7y agoA runaway.
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