New Dark Matter Detectors using DNA for Nanometer Tracking
New Dark Matter Detectors using DNA for Nanometer Tracking
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使用 DNA 进行纳米追踪的新型暗物质探测器
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
T. Sano
中科院分区：
文献类型：
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作者：
A. Drukier;K. Freese;Alejandro López;D. Spergel;C. Cantor;G. Church;T. Sano
弱相互作用大质量粒子（WIMP）可能构成宇宙中的大部分物质。虽然DAMA/LIBRA，CoGeNT和CRESST-II都有有趣的结果，但还没有令人信服的暗物质探测。探测反冲核方向性的能力将大大有助于用“年调制效应”和“日调制效应”探测WIMP。方向灵敏度需要非常大的气体（TPC）探测器或具有几纳米空间分辨率的探测器。在本文中，我们提出了一种新型的暗物质探测器：由DNA制成的探测器可以提供纳米分辨率的跟踪，0.5 keV的能量阈值，并可以在室温下工作。当来自银河系晕的WIMP弹性散射探测器中的原子核时，反冲的原子核
Weakly Interacting Massive Particles (WIMPs) may constitute most of the matter in the Universe. While there are intriguing results from DAMA/LIBRA, CoGeNT and CRESST-II, there is not yet a compelling detection of dark matter. The ability to detect the directionality of recoil nuclei will considerably facilitate detection of WIMPs by means of "annual modulation eect" and "diurnal modulation eect". Directional sensitivity requires either extremely large gas (TPC) detectors or detectors with a few nanometer spatial resolution. In this paper we propose a novel type of dark matter detector: detectors made of DNA could provide nanometer resolution for tracking, an energy threshold of 0.5 keV, and can operate at room temperature. When a WIMP from the Galactic Halo elastically scatters o of a nucleus in the detector, the recoiling nucleus then