Neutrinos from the primary proton-proton fusion process in the Sun
Neutrinos from the primary proton-proton fusion process in the Sun
复制标题
DOI：
10.1038/nature13702
复制
发表时间：
2014-08-28
期刊：
影响因子：
64.8
通讯作者：
Zuzel, G.
中科院分区：
文献类型：
--
作者：
Bellini, G.;Benziger, J.;Zuzel, G.
在太阳核心，能量通过一系列将氢转化为氦的核反应释放出来。主要的反应被认为是两个质子融合并发射出一个低能中微子。这些所谓的质子 - 质子（pp）中微子几乎构成了太阳中微子通量的全部，远远超过后续反应中发射的中微子数量。尽管来自次级过程的太阳中微子已被观测到，这证明了太阳能量的核起源，并有助于中微子振荡的发现，但来自质子 - 质子融合的中微子迄今仍未被直接探测到。在此我们报告对质子 - 质子中微子的光谱观测结果，表明太阳约99%的能量（每秒3.84×10³³尔格）是由质子 - 质子融合过程产生的。
In the core of the Sun, energy is released through sequences of nuclear reactions that convert hydrogen into helium. The primary reaction is thought to be the fusion of two protons with the emission of a low-energy neutrino. These These so-called pp neutrinos constitute nearly the entirety of the solar neutrino flux, vastly outnumbering those emitted in the reactions that follow. Although solar neutrinos from secondary processes have been observed, proving the nuclear origin of the Sun's energy and contributing to the discovery of neutrino oscillations, those from proton-proton fusion have hitherto eluded direct detection. Here we report spectral observations of pp neutrinos, demonstrating that about 99 per cent of the Power of the Sun, 3.84 x 10(33) ergs per second, is generated by the proton-proton fusion process.