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??Ian Hutcheon tests for illegal nuclear activity?

EarthSky

?Physicist Ian Hutcheon, of Lawrence Livermore National Laboratory, is what you might call a nuclear detective. Hutcheon’s job is to look for evidence of the production of highly enriched uranium or plutonium, the essential components of nuclear weapons.

伊恩? 哈欽，勞倫斯利物摩爾國(guó)家實(shí)驗(yàn)室的物理學(xué)家，就是大家口中的核偵探。他的工作便是尋找生產(chǎn)高濃縮鈾或钚的證據(jù)，而它們正是制造核武器必不可少的成分。

Ian Hutcheon: Intercepted samples come in all sizes and shapes, very much in the same form as if you go down to your local police station and look at the types of evidence that are collected at crime scenes.

伊恩? 哈欽：這些被截獲的樣本都有不同的大小和形狀，極其像你去當(dāng)?shù)氐木炀植榭吹挠煞缸铿F(xiàn)場(chǎng)收集而來(lái)的各式各樣的證據(jù)。

Hutcheon receives samples from nuclear facilities throughout the world. He then tests them for evidence of illegal materials like highly enriched uranium. It’s difficult to differentiate legal material from illegal material, Hutcheon said, because uranium is everywhere.

哈欽從全世界的核設(shè)施那里獲得這些樣本，接著他會(huì)逐個(gè)檢測(cè)，看它們是否含有諸如高濃縮鈾的非法原料。其實(shí)很難辨別出合法原料和非法原料，哈欽說(shuō)，因?yàn)殁櫉o(wú)處不在。

Ian Hutcheon: If you go out on the beach and pick up a handful of sand it contains about 4 parts per million of uranium.

伊恩? 哈欽：就算你在海灘上隨便抓起一把沙，其中就有約百萬(wàn)分之四的鈾。

Nuclear investigative testing is used by agencies such as the United Nations to monitor countries’ nuclear activities such as the production of enriched uranium and their compliance with international agreements on weapons of mass destruction.

聯(lián)合國(guó)等部門常會(huì)利用核調(diào)查檢測(cè)來(lái)監(jiān)控各國(guó)的核活動(dòng)，例如是否生產(chǎn)了濃縮鈾，是否遵守了有關(guān)大規(guī)模殺傷性武器的國(guó)際協(xié)議。

Ian Hutcheon: Our charge is to measure the properties of the material and to demonstrate that we can do this with high precision, and that the data we can collect would stand up, for example, in a court of law.

伊恩? 哈欽：我們責(zé)任就是測(cè)量樣本原料的各項(xiàng)屬性，并證明我們能非常精確地測(cè)量出結(jié)果，而我們所收集的數(shù)據(jù)即便在法庭上也是能站得住腳的。

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