用穆斯堡尔谱研究中微子-核相干散射
Searching Neutrino-Nucleus Coherent Scattering with Mössbauer Spectroscopy
摘要：
穆斯堡尔技术被提出作为一种替代的实验程序，用于检测相干弹性$ν$-核散射（CENNS）。$Z_{0}$-玻色子交换被认为是穆斯堡尔探测器样品中$^{57}Fe$核中价中子量子态变化对核平均场势的扰动。这种原子核是穆斯堡尔谱学中使用的典型同位素。价中子的扰动能级容纳了转移的能量，改变了穆斯堡尔电磁共振的等轴峰的位置。我们计算的等距移位校正CENNS，并表明，这个数量是能够检测到足够的精度。因此，在反应堆中微子束存在和没有中微子通量的穆斯堡尔等距位移之间的差异被指出作为一个品质因数，以体现CENS。在这项工作中，我们表明，CENNS校正的异构体位移是$\approx 10^{-7}$ eV，这是大于$10^{-10}$ eV分辨率的技术。
英文摘要：
The Mössbauer technique is proposed as an alternative experimental procedure to be used in the detection of Coherent Elastic $ν$-Nucleus Scattering (CENNS). The $Z_{0}$-boson exchange is considered as a perturbation on the nuclear mean-field potential with a change in the valence neutron quantum states in the $^{57}Fe$ nucleus of the Mössbauer detector sample. This nuclei is a typical isotope used in Mössbauer spectroscopy. Perturbed level of the valence neutron accommodates the transferred energy, modifying the location of the isometric peak of the Mössbauer electromagnetic resonance. We calculate the isometric shift correction due CENNS and show that this quantity is able to be detected with enough precision. Therefore, the difference between the Mössbauer isometric shift in the presence of a reactor-neutrino beam and without the neutrinos flux is pointed out as a figure of merit to manifest CENNS. In this work, we show that the CENNS correction of the Isomeric Shift is of $\approx 10^{-7}$eV, which is greater than the $10^{-10}$eV resolution of the technique.
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