中子反应太迟了？
我们有高速中子反应堆，那使用一个液态金属，以钠或者铅的形式。
We have fast reactors which use a liquid metal in the form of sodium or perhaps lead.
通过分析和计算锕系核裂变截面和全套中子反应截面获取了一组锕系核的裂变位垒参数。
The fission barrier parameters for actinide nuclei were obtained by analysis and calculations of fission cross-sections and complete neutron reaction cross sections.
影响地层评价的中子反应有四种，包括中子弹性散射、中子非弹性散射、快中子反应和中子俘获。
There are four principal neutron interactions that affect formation evaluation: elastic neutron scattering, inelastic neutron scattering, fast-neutron reactions and neutron capture.
这种再处理工艺，或甚至快速中子反应堆不使用水来缓和裂变，及比他们消耗量创造更多的燃料，仍是一个遥远的前景。
Such reprocessing-or even fast-neutron reactors that don't use water to moderate fission and can potentially create more fuel than they consume-remain a distant prospect.
这一过程释放出大量能量和更多的中子，于是继续将别的铀原子一分为二，引发连锁反应。
The process releases a lot of energy and more neutrons, which go on to split other uranium atoms, triggering a chain reaction.
石墨是很好的减速剂，减慢中子并且让它们的反应保持在一个适当的温度范围内。
Graphite is a great moderator, slowing down the neutrons and keeping their reaction in the proper temperature range.
这些控制棒，由能够吸收中子的物质——硼制成，它吸收多余的中子，使链式反应停止。
These rods, made of neutron-absorbing materials such as boron, mop up excess neutrons and quench the chain reaction.
因此，除非这些中子能够被充分减速，否则链式反应会停止。
As a result, the chain reaction will Peter out unless the neutrons can be slowed down sufficiently.
铀或钚的同位素被称为裂变材料，即我们可以利用自由中子去轰击它们来产生裂变反应。
The uranium or plutonium isotopes are referred to as "fissile," which means we can use them to induce fission by bombarding them with free neutrons.
所以，理解了这些事情，它们能够将中子从反应堆中除去，你就在能够设计一个核心的位置了。
So with an appreciation for the kinds of things that can take neutrons away from the system you then are in a position to design a core.
产生的新组成包括两个新原子核(副产物)、一些光子(伽马射线)以及更多的自由中子，它们是参与核裂变反应并产生能量的关键。
Those new pieces include two new nuclei (byproducts), some photons (gamma rays), but also some more free neutrons, which is the key that makes nuclear fission a good candidate to generate energy.
这些混合物发生反应后就形成氦元素，并同时生成更多的中子与大批量的能量。
These react to form helium, yet more neutrons and a whole lot more energy.
水源除用于冷却燃料外(也由此生成蒸汽)，还起到调节介质的作用，它能使中子减速，并使核反应持续进行。
Besides cooling the fuel (and thus producing the steam) the water also ACTS as a moderator, slowing down the neutrons and keeping the reaction going.
中子过多会让裂变反应失控，中子过少则会让裂变反应停止。
Too many neutrons can cause a fission reaction to get out of control. Too few neutrons and a fission reaction stops.
PCR是一座反应堆的核中子数会在反应堆能量增加后增加或减少的衡量标志。
The power coefficient of reactivity (PCR) is a measure of whether a particular reactor's nuclear neutron population will tend to increase or decrease after an increase in the reactor's power.
纯氘反应也会产生中子，虽然最多只能释放出三分之一的聚变能。
Pure deuterium reactions also produce neutrons, though only about 1/3 of the fusion energy is released as such.
所以，如果你理解这个图表，你会开始，了解到在反应堆核心的中子周期。
So if you understand this chart you will begin to appreciate the life of a neutron in the reactor core.
大约80百分之的聚变能以中子的形式释放出来，所以这个核反应不是很大（或有用）对于一个星际飞船。
About 80 percent of the fusion energy released is in the form of those neutrons, so the reaction isn't very healthy (or useful) for a starship.
任何突然出现的过量中子数会加速裂变反应，增加反应堆能量输出。
Any sudden excess of neutrons will accelerate the fission reaction and increase the reactor's power output.
这主要对于一个临界反应堆的中子平衡，它考虑了所有的这些现象。
And it's essentially a neutron balance for a critical reactor and it does consider all of these phenomena.
这是因为他们将完成与质子和中子的融合，而其融合采取方式是让核反应更容易快捷地发生。
This is because they would have combined with protons and neutrons in ways that made it easier and faster for other nuclear reactions to occur.
这是因为他们将完成与质子和中子的融合，而其融合采取方式是让核反应更容易快捷地发生。
This is because they would have combined with protons and neutrons in ways that made it easier and faster for other nuclear reactions to occur.
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