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科学家们太拼了 为探测暗物质 - 站长搜索
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科学家们太拼了 为探测暗物质

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2015-02-25 10:39:05 转载来源: 网络整理/侵权必删

站长搜索( www.adminso.com):为探测暗物质,科学家们太拼了 一支美国物理学家小组正在设计新的实验,试图首先直接探测到暗物质的存在。科学家在实验中第一次探测到气泡的生成,该实验是利用气泡指示的方式来探测暗物质的存在

站长搜索( www.adminso.com):为探测物质科学家们太拼了

一支美国物理学家小组正在设计新的实验,试图首先直接探测到暗物质的存在。科学家在实验中第一次探测到气泡的生成,该实验是利用气泡指示的方式来探测暗物质的存在。这套实验装置被安置在1.5英里(约合2.4公里)的地下,位于安大略省萨德伯里市。

这支暗物质探测小组由23位物理学家组成,分别来自于芝加哥大学、西北大学以及美国能源部的费米加速器国家实验室。其中费米实验室负责暗物质探测器的组装和调试工作。

西北大学的物理学家Eric Dahl也参与了其中的研究,他说:“宇宙中每1克普通物质或原子,就对应有大约5.5克暗物质。暗物质究竟是由什么组成仍然未知,科学家已经排除了目前所有的已知粒子类型。无论暗物质是什么,都会给我们带来全新的物理知识,不仅能够回答宇宙学和天体物理学中最大的谜团,而且也能开辟粒子物理学的新天地。

早在1933年,天体物理学家就已经观测到,星系的运动需要比用可见光看到的物质多得多的物质来维持。其实,在我们周围就存在着大量的暗物质,在一个拳头大小的体积之内平均就有一颗暗物质粒子,它们通常以数百公里每秒的速度运动。

科学家设计的这种暗物质探测器中包含30升过热的三氟碘甲烷(CF3I)。探测器的周围安装有大量的声学传感器,能够监听到受暗物质撞击的原子核造成气泡的破裂声响。于此同时,该实验小组的科学家正在设计新一代的暗物质探测器。

标签: 科学家 们太 拼了 探测 物质


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