| 单词 | actinide |
| 例句 | Researchers continue sketching out the full picture of actinide isotopes. Chi-Nu experiment ends with data to support nuclear security, energy reactors 2023-09-28T04:00:00Z Similarly, the behavior of actinium means it is part of the actinide series, although its electron configuration makes it the first member of the fourth transition series. Chemistry 2019-02-14T00:00:00Z Similar parallel formation mechanisms exist for the other actinide elements but Pu-239 is the main product of these reactions. A Nuclear Primer -- It's All About Uranium 2014-09-20T04:00:00Z In the years that followed, he served on Nuclear Regulatory Commission discussion panels, a National Academy of Sciences panel on nuclear waste and created a research center for the study of actinide materials. 1 Year Later, What Does Fukushima Mean for Nuclear Research? 2012-03-12T17:15:08.757Z The most basic definition of the actinide series, comprised of elements 89 through 103, is that it results from the sequential filling of the 5f electron shell. The Disappearing Actinides, and Other Frustrations from the Bottom Row of the Periodic Table of the Elements 2012-01-27T18:45:02.817Z He specializes in the development of new separation techniques to isolate actinide elements from environmental matrices such as seawater, marine sediments, and soils. Live Chat: Bill Burnett Talks About Radiation in Japan's Seas 2011-04-06T21:07:00Z Since then, fission has been observed in many other isotopes, including most actinide isotopes that have an odd number of neutrons. Chemistry 2019-02-14T00:00:00Z Because of neutron capture, shown in the figure above, other elements produced during the nuclear reactions include the heavy actinide elements, the last row in the periodic table – plutonium, americium, neptunium, and so on. A Nuclear Primer -- It's All About Uranium 2014-09-20T04:00:00Z They are the uranium series, the actinide series, and the thorium series. Chemistry 2019-02-14T00:00:00Z The radioactivity of the actinide elements is caused by their nuclear instability. The Disappearing Actinides, and Other Frustrations from the Bottom Row of the Periodic Table of the Elements 2012-01-27T18:45:02.817Z In order to become more stable, the nucleus of an actinide element undergoes radioactive decay, releasing gamma rays, alpha particles, beta particles, or neutrons. The Disappearing Actinides, and Other Frustrations from the Bottom Row of the Periodic Table of the Elements 2012-01-27T18:45:02.817Z |
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