Dark Matter Detection Using Helium Evaporation and Field Ionization
Dark Matter Detection Using Helium Evaporation and Field Ionization
复制标题
使用氦蒸发和场电离进行暗物质检测
DOI：
10.1103/physrevlett.119.181303
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发表时间：
2017
影响因子：
8.6
通讯作者：
Stein, Derek
中科院分区：
文献类型：
--
作者：
Maris, Humphrey J.;Seidel, George M.;Stein, Derek
我们描述了一种基于氦原子从冷表面蒸发及其随后使用场电离检测的暗物质检测方法。当暗物质粒子从目标物质的原子核散射出去时，就会产生基本激发（声子或质子）。能量大于氦与表面结合能的激发会导致氦原子的蒸发。我们建议在强电场中电离这些原子来探测它们。由于氦与表面的结合能可以低于1兆电子伏，这种探测方案为探测质量范围低至1兆电子伏的暗物质粒子开辟了新的可能性。
We describe a method for dark matter detection based on the evaporation of helium atoms from a cold surface and their subsequent detection using field ionization. When a dark matter particle scatters off a nucleus of the target material, elementary excitations (phonons or rotons) are produced. Excitations which have an energy greater than the binding energy of helium to the surface can result in the evaporation of helium atoms. We propose to detect these atoms by ionizing them in a strong electric field. Because the binding energy of helium to surfaces can be below 1 meV, this detection scheme opens up new possibilities for the detection of dark matter particles in a mass range down to.