1.1 Neutrinos from the sun 1. Introduction

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Presentation transcript:

1.1 Neutrinos from the sun 1. Introduction Achim Stahl, September 2017 Achim Stahl – RWTH Aachen University – JARA-FAME

Nuclear Fusion in the Sun 4 p+  4He + 2 e- + 2 e + 26.72 MeV Achim Stahl, September 2017

Fusion: Secondary Branches Achim Stahl, September 2017

Neutrino Flux Achim Stahl, September 2017

Neutrino Flux Achim Stahl, September 2017

Fusion: CNO cycle Achim Stahl, September 2017

Fusion: CNO cycle Achim Stahl, September 2017

1.2 Neutrino flux 1. Introduction Achim Stahl, September 2017 Achim Stahl – RWTH Aachen University – JARA-FAME

Neutrino Flux What ist the total flux? Achim Stahl, September 2017

Solar constant Achim Stahl, September 2017

Solar constant Achim Stahl, September 2017

Solar NeutrinoS Solar constant: 1360 𝐽 𝑠 𝑚 2 =8.5 10 15 𝑀𝑒𝑉 𝑠 𝑚 2 Neutrino flux: 6.36 10 14 𝜈 𝑠 𝑚 2 nuclear fusion produces neutrinos 5% accuracy ! origin of the discrepancy ?