訂購 Herman Yeung 數學天書詳情

2020年4月18日 星期六

Newspaper Cutting 025 - China's 'artificial sun' runs at 100 million degrees for 10 seconds

Vocabulary : 
(1) artificial sun = 人造太陽 
(2) Experimental Advanced Superconducting Tokamak (EAST) = 先進實驗超導托馬克實驗裝置,又稱為「人造太陽」 
(3) nuclear fusion = 核聚變 
(4) ultimate solution = 最終解決方案 
(5) mankind’s energy problems = 人類能源問題 
(6) fusion technology = 聚變科技 
(7) mature = 成熟 
(8) magnetic constraints = 磁力約束 
(9) plasma heating = 電漿加熱 
(10) steady-state operations = 穩定態運轉 
(11) humanity = 人類 
(12) confinement = 限制 
(13) discharge = 放電 
(14) leap = 飛躍 
(15) core plasma temperature = 核心電漿溫度 
(16) commercial application = 商業應用 

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China's 'artificial sun' runs at 100 million degrees for 10 seconds - 2 Apr, 2020 

China's Experimental Advanced Superconducting Tokamak (EAST), the "artificial sun", has successfully run at 100 million degrees Celsius for nearly 10 seconds, marking a major breakthrough, according to CCTV. 

Nuclear fusion is seen as the ultimate solution to mankind's energy problems, and the problem now is that fusion technology is not mature enough. 

One solution is superconducting tokamak, which uses magnetic constraints to control plasma heating to achieve ultra-high temperatures. 

EAST is located at the Hefei Institutes of Physical Science of the Chinese Academy of Sciences (CASHIPS) and is billed as an open test facility for conducting steady-state operations and ITER-related physics research by both Chinese and international scientists. 

EAST is also known as the artificial sun because its goal is to provide energy for humanity through nuclear fusion like the Sun. 

In 2017, for the first time in the world, EAST achieved a high confinement operation of 101.2 seconds of continuous plasma discharge at 50 million degrees, achieving a leap from the 60-second to 100-second order of magnitude. 

At the end of 2018, it reached a core plasma temperature of over 100 million degrees Celsius - that's more than six times hotter than the interior of the Sun - and heating power of 10 MW, enabling the study of various aspects of practical nuclear fusion in the process. 

If the temperature of over 100 million degrees Celsius can be maintained for a longer period of time, then mankind is really not far from solving the commercial application of nuclear fusion, but that day may be a long time away. 

Source : https://cntechpost.com/2020/04/02/chinas-artificial-sun-runs-at-100-million-degrees-for-10-seconds/

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