论文标题

中微性中微子横截面和预期的$^{40} $ ar的超新星信号从磁性偶极强度增加三倍

Neutral-current neutrino cross section and expected supernova signals for $^{40}$Ar from a three-fold increase in the magnetic dipole strength

论文作者

Tornow, W., Tonchev, A. P., Finch, S. W., Krishichayan, Wang, X. B., Hayes, A. C., Yeomans, H. G. D., Newmark, D. A.

论文摘要

鉴于对液体Argon Neutrino探测器的极大兴趣,$^{40} $ ar($γ,γ'$)$^{40} $^{40} $ ar $^{*} $反应被重新探讨以指导Supernova Energies的中性当前中微子横截面的计算。使用核共振荧光技术,使用单必须线性极化光子束99%,我们报告的磁偶极强度在$^{40} $ ar的10 meV左右增加了三倍。基于壳模型的计算,并使用实验鉴定的过渡,计算了$^{40} $ ar的低能反应的中微子中微子横截面。

In view of the great interest in liquid argon neutrino detectors, the $^{40}$Ar($γ,γ'$)$^{40}$Ar$^{*}$ reaction was revisited to guide a calculation of the neutral current neutrino cross section at supernova energies. Using the nuclear resonance fluorescence technique with a monoenergetic, 99% linearly polarized photon beam, we report a three-fold increase in magnetic dipole strength at around 10 MeV in $^{40}$Ar. Based on shell-model calculations, and using the experimentally identified transitions, the neutral current neutrino cross sections for low-energy reactions on $^{40}$Ar are calculated.

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