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arXiv 1402.2197physics.ins-det
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超导纳米线探测器对低能单离子的灵敏度

Sensitivity of a superconducting nanowire detector for single ions at low energy

M. Sclafani, M. Marksteiner, F. McLennar Keir, A. Divochiy, A. Korneev, A. Semenov, G. Goltsmann, M. Arndt

摘要:

我们报告的超导纳米线检测器的特点,在低动能的离子。我们测量的绝对单粒子探测效率$η$和跟踪其增加的能量高达$η= 100$ %。我们讨论了惰性气体吸附物对低温表面的影响,并分析了它们与大质量慢粒子探测的相关性。我们最近的热点形成的模型应用于在0.2-1千电子伏之间的能量的原子离子的入射。我们建议如何观察到的光子和原子或分子的差异可以与探测器的表面条件,我们建议,恢复适当的表面条件可能会打开一个新的途径,以SSPD为基础的分子和纳米粒子的光学光谱。

英文摘要:

We report on the characterization of a superconducting nanowire detector for ions at low kinetic energies. We measure the absolute single particle detection efficiency $η$ and trace its increase with energy up to $η= 100$ %. We discuss the influence of noble gas adsorbates on the cryogenic surface and analyze their relevance for the detection of slow massive particles. We apply a recent model for the hot spot formation to the incidence of atomic ions at energies between 0.2-1 keV. We suggest how the differences observed for photons and atoms or molecules can be related to the surface condition of the detector and we propose that the restoration of proper surface conditions may open a new avenue to SSPD-based optical spectroscopy on molecules and nanoparticles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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