Low-background steel is any steel produced prior to the detonation of the first atomic bombs in the 1940s and 1950s. With the Trinity test and the Atomic bombing of Hiroshima and Nagasaki in 1945, and then subsequent nuclear weapons testing during the early years of the Cold War, background radiation levels increased across the world. Modern steel is contaminated with radionuclides because its production used atmospheric air. Low background steel is so called because it does not suffer from such nuclear contamination. This steel is used in devices that require the highest sensitivity for detecting radionuclides.

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  • 低本底钢是在1940年代和1950年代第一代原子弹爆炸前生产的钢材。由于在1945年,随着三位一体核试验,广岛,长崎核轰炸,以及冷战早期一系列核武器试验的进行,世界本底辐射量有明显升高。现代生产的钢铁由于普遍使用大气气体而被放射性同位素污染,低本底钢的称呼由此而来。因为其没有受到过此类污染,这种钢材被使用在高精度放射性同位素检测设备上。 (zh)
  • Low-background steel is any steel produced prior to the detonation of the first atomic bombs in the 1940s and 1950s. With the Trinity test and the Atomic bombing of Hiroshima and Nagasaki in 1945, and then subsequent nuclear weapons testing during the early years of the Cold War, background radiation levels increased across the world. Modern steel is contaminated with radionuclides because its production used atmospheric air. Low background steel is so called because it does not suffer from such nuclear contamination. This steel is used in devices that require the highest sensitivity for detecting radionuclides. The primary source of low-background steel is ships that have been under water since before the Trinity test, most famously the scuttled German WWI battleships in Scapa Flow. (en)
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  • 低本底钢是在1940年代和1950年代第一代原子弹爆炸前生产的钢材。由于在1945年,随着三位一体核试验,广岛,长崎核轰炸,以及冷战早期一系列核武器试验的进行,世界本底辐射量有明显升高。现代生产的钢铁由于普遍使用大气气体而被放射性同位素污染,低本底钢的称呼由此而来。因为其没有受到过此类污染,这种钢材被使用在高精度放射性同位素检测设备上。 (zh)
  • Low-background steel is any steel produced prior to the detonation of the first atomic bombs in the 1940s and 1950s. With the Trinity test and the Atomic bombing of Hiroshima and Nagasaki in 1945, and then subsequent nuclear weapons testing during the early years of the Cold War, background radiation levels increased across the world. Modern steel is contaminated with radionuclides because its production used atmospheric air. Low background steel is so called because it does not suffer from such nuclear contamination. This steel is used in devices that require the highest sensitivity for detecting radionuclides. (en)
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  • 低本底钢 (zh)
  • Low-background steel (en)
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