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AGM2015: Antineutrino Global Map 2015.

Usman SM, Jocher GR, Dye ST, McDonough WF, Learned JG - Sci Rep (2015)

Bottom Line: The open source AGM2015 provides fundamental predictions for experiments, assists in strategic detector placement to determine neutrino mass hierarchy, and aids in identifying undeclared nuclear reactors.We use cosmochemically and seismologically informed models of the radiogenic lithosphere/mantle combined with the estimated antineutrino flux, as measured by KamLAND and Borexino, to determine the Earth's total antineutrino luminosity at .We find a dominant flux of geo-neutrinos, predict sub-equal crust and mantle contributions, with ~1% of the total flux from man-made nuclear reactors.

View Article: PubMed Central - PubMed

Affiliation: Exploratory Science and Technology Branch, National Geospatial-Intelligence Agency, Springfield, VA, 22150, USA.

ABSTRACT
Every second greater than 10(25) antineutrinos radiate to space from Earth, shining like a faint antineutrino star. Underground antineutrino detectors have revealed the rapidly decaying fission products inside nuclear reactors, verified the long-lived radioactivity inside our planet, and informed sensitive experiments for probing fundamental physics. Mapping the anisotropic antineutrino flux and energy spectrum advance geoscience by defining the amount and distribution of radioactive power within Earth while critically evaluating competing compositional models of the planet. We present the Antineutrino Global Map 2015 (AGM2015), an experimentally informed model of Earth's surface antineutrino flux over the 0 to 11 MeV energy spectrum, along with an assessment of systematic errors. The open source AGM2015 provides fundamental predictions for experiments, assists in strategic detector placement to determine neutrino mass hierarchy, and aids in identifying undeclared nuclear reactors. We use cosmochemically and seismologically informed models of the radiogenic lithosphere/mantle combined with the estimated antineutrino flux, as measured by KamLAND and Borexino, to determine the Earth's total antineutrino luminosity at . We find a dominant flux of geo-neutrinos, predict sub-equal crust and mantle contributions, with ~1% of the total flux from man-made nuclear reactors.

No MeSH data available.


Related in: MedlinePlus

AGM2015 geoneutrino flux due to 238U and 232Th decay in the Earth’s crust and mantle.Flux units are  at the Earth’s surface. Map includes  of all energies. Figure created with MATLAB45.
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f5: AGM2015 geoneutrino flux due to 238U and 232Th decay in the Earth’s crust and mantle.Flux units are at the Earth’s surface. Map includes of all energies. Figure created with MATLAB45.

Mentions: AGM2015 neutrino luminosities are for total numbers of neutrinos. Although almost all are originally emitted as electron antineutrinos, on average only ~0.55 of the total remain so due to neutrino oscillations. We calculate the total Earth luminosity to be s−1. A detailed breakdown of 238U, 232Th, and 40K geoneutrino luminosity from the lithosphere and mantle can be seen in Table 2 (for all energies), as well as in Table 3 for Eν ≥ 1.8 MeV. Figure 5 shows the combined AGM2015 crust + mantle flux.


AGM2015: Antineutrino Global Map 2015.

Usman SM, Jocher GR, Dye ST, McDonough WF, Learned JG - Sci Rep (2015)

AGM2015 geoneutrino flux due to 238U and 232Th decay in the Earth’s crust and mantle.Flux units are  at the Earth’s surface. Map includes  of all energies. Figure created with MATLAB45.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555106&req=5

f5: AGM2015 geoneutrino flux due to 238U and 232Th decay in the Earth’s crust and mantle.Flux units are at the Earth’s surface. Map includes of all energies. Figure created with MATLAB45.
Mentions: AGM2015 neutrino luminosities are for total numbers of neutrinos. Although almost all are originally emitted as electron antineutrinos, on average only ~0.55 of the total remain so due to neutrino oscillations. We calculate the total Earth luminosity to be s−1. A detailed breakdown of 238U, 232Th, and 40K geoneutrino luminosity from the lithosphere and mantle can be seen in Table 2 (for all energies), as well as in Table 3 for Eν ≥ 1.8 MeV. Figure 5 shows the combined AGM2015 crust + mantle flux.

Bottom Line: The open source AGM2015 provides fundamental predictions for experiments, assists in strategic detector placement to determine neutrino mass hierarchy, and aids in identifying undeclared nuclear reactors.We use cosmochemically and seismologically informed models of the radiogenic lithosphere/mantle combined with the estimated antineutrino flux, as measured by KamLAND and Borexino, to determine the Earth's total antineutrino luminosity at .We find a dominant flux of geo-neutrinos, predict sub-equal crust and mantle contributions, with ~1% of the total flux from man-made nuclear reactors.

View Article: PubMed Central - PubMed

Affiliation: Exploratory Science and Technology Branch, National Geospatial-Intelligence Agency, Springfield, VA, 22150, USA.

ABSTRACT
Every second greater than 10(25) antineutrinos radiate to space from Earth, shining like a faint antineutrino star. Underground antineutrino detectors have revealed the rapidly decaying fission products inside nuclear reactors, verified the long-lived radioactivity inside our planet, and informed sensitive experiments for probing fundamental physics. Mapping the anisotropic antineutrino flux and energy spectrum advance geoscience by defining the amount and distribution of radioactive power within Earth while critically evaluating competing compositional models of the planet. We present the Antineutrino Global Map 2015 (AGM2015), an experimentally informed model of Earth's surface antineutrino flux over the 0 to 11 MeV energy spectrum, along with an assessment of systematic errors. The open source AGM2015 provides fundamental predictions for experiments, assists in strategic detector placement to determine neutrino mass hierarchy, and aids in identifying undeclared nuclear reactors. We use cosmochemically and seismologically informed models of the radiogenic lithosphere/mantle combined with the estimated antineutrino flux, as measured by KamLAND and Borexino, to determine the Earth's total antineutrino luminosity at . We find a dominant flux of geo-neutrinos, predict sub-equal crust and mantle contributions, with ~1% of the total flux from man-made nuclear reactors.

No MeSH data available.


Related in: MedlinePlus