更新时间:2020-03-16 21:04:00作者:网络


最近一支澳大利亚研究团队首创一种新技术,称能在五年内驾驭核聚变, 并且清洁,绝对安全,反应堆甚至可以放置在人口密集的地区。由此推断,核能的广泛应用或可带来前所未有的各领域革新,就连星际旅行也不再是白日梦。



Recent reports from scientists pursuing a new kind of nuclear fusion technology are encouraging, but we are still some distance away from the "holy grail of clean energy".
这项技术是由新南威尔士大学的海因里希·霍拉和他的同事共同开发的 ,他们使用功率 强大的激光把氢和硼原子融合在一起,以便释放出可以用来发电的高能粒子。
The technology developed by Heinrich Hora and his colleagues at the University of NSW uses powerful lasers to fuse together hydrogen and boron atoms, releasing high-energy particles that can be used to generate electricity.
As with other kinds of nuclear fusion technology, however, the difficulty is in building a machine that can reliably initiate the reaction and harness the energy it produces.
What is fusion?
Fusion is the process that powers the Sun and the stars. It occurs when the nuclei of two atoms are forced so close to one another that they combine into one, releasing energy in the process. 
If the reaction can be tamed in the laboratory, it has the potential to deliver near-limitless baseload electricity with virtually zero carbon emissions.
The experiments with hydrogen and boron have certainly produced fascinating physical results, but projections by Hora and colleagues of a five-year path to realising fusion power seem premature. Others have attempted laser-triggered fusion. The National Ignition Facility in the US, for example, has attempted to achieve hydrogen-deuterium fusion ignition using 192 laser beams focused on a small target. 
These experiments reached one-third of the conditions needed for ignition for a single experiment. The challenges include precise placement of the target, non-uniformity of the laser beam, and instabilities that occur as the target implodes.
These experiments were conducted at most twice per day. By contrast, estimates suggest that a power plant  would require the equivalent of 10 experiments per second.
That said, there is always room for smart innovation and new concepts, and it is wonderful to see all kinds of investment in fusion science.






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