Magnetic characteristics of Luna 16 and 20 samples
Magnetic characteristics of Luna 16 and 20 samples
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Luna 16 和 20 样本的磁特性
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
S. K. Runcorn
中科院分区：
文献类型：
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作者：
A. Stephenson;D. Collinson;S. K. Runcorn
岩石碎片L2015，3，1和L2015，3，11的天然剩余磁化强度分别为<；3.5×10-7和<；40×10-6G cm3g-1。前一种样品由等温剩磁(I.r.M.)测量结果表明，这些样品的铁含量非常低，而后一种样品的铁含量要高得多，并显示出I.R.M.特征类似于阿波罗任务中的角砾岩样本。易感性和免疫球蛋白。测量表明，露娜16号细粉的含铁量约为露娜20号样品的四倍，而密度分离得到的轻组分的含铁量约为重质组分的两倍。与阿波罗细粉一样，露娜16和20细粉的磁性行为以小铁粒为主，其中大部分是超顺磁性的，颗粒尺寸小于13 nm左右。
The natural remanent magnetization of rock fragments L2015,3,1 and L2015,3,11 was found to be < 3.5 x 10-7 and < 40 x 10-6 G cm3 g-1 respectively. The former sample, from isothermal remanent magnetization (i.r.m.) measurements, contained very little iron, while the latter sample had a much higher iron content and exhibited i.r.m. characteristics similar to breccia samples from Apollo missions. Susceptibility and i.r.m. measurements have shown that Luna 16 fines contain about four times as much iron as Luna 20 samples and that the light fractions from the density separations contain about twice as much iron as the heavy fraction. Like the Apollo fines, the magnetic behaviour of Luna 16 and 20 fines is dominated by small iron particles, most of which are superparamagnetic and of grain size less than about 13 nm.