TY - JOUR
T1 - Element separation chemistry and cosmogenic 10Be dating of a ferromanganese crust
AU - Koll, D.
AU - Wallner, A.
AU - Battisson, S.
AU - Fichter, S.
AU - Fifield, L. K.
AU - Froehlich, M. B.
AU - Lachner, J.
AU - Merchel, S.
AU - Pavetich, S.
AU - Rugel, G.
AU - Slavkovská, Z.
AU - Tims, S. G.
AU - Ziegenrücker, R.
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/11/1
Y1 - 2022/11/1
N2 - Oceanic archives are contemporary witnesses of Earth's recent astrophysical history by incorporating extraterrestrial radionuclides. VA13/2 - 237KD is one of the most studied ferromanganese crusts and it has been shown that the crust contains live interstellar 60Fe. Here, we have characterized a large piece of this crust with a 3D optical scan, a micro-CT scan and 3D modeling, followed by the chemical extraction of highly purified, element-specific fractions for accelerator mass spectrometry. High-accuracy cosmogenic 10Be dating of two independent drill-holes showed a time-dependent variability in growth rate across the surface of the crust. This well-characterized crust is used to search for interstellar radionuclides, such as supernova-produced 60Fe and the r-process nuclide 244Pu. Other extraterrestrial radionuclides including 26Al, 53Mn, 129I, 182Hf or 247Cm could be investigated in the future.
AB - Oceanic archives are contemporary witnesses of Earth's recent astrophysical history by incorporating extraterrestrial radionuclides. VA13/2 - 237KD is one of the most studied ferromanganese crusts and it has been shown that the crust contains live interstellar 60Fe. Here, we have characterized a large piece of this crust with a 3D optical scan, a micro-CT scan and 3D modeling, followed by the chemical extraction of highly purified, element-specific fractions for accelerator mass spectrometry. High-accuracy cosmogenic 10Be dating of two independent drill-holes showed a time-dependent variability in growth rate across the surface of the crust. This well-characterized crust is used to search for interstellar radionuclides, such as supernova-produced 60Fe and the r-process nuclide 244Pu. Other extraterrestrial radionuclides including 26Al, 53Mn, 129I, 182Hf or 247Cm could be investigated in the future.
KW - Accelerator mass spectrometry
KW - Be
KW - Fe
KW - Ferromanganese crust
KW - Nuclear astrophysics
KW - Pu
KW - Separation chemistry
UR - http://www.scopus.com/inward/record.url?scp=85138481689&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2022.08.017
DO - 10.1016/j.nimb.2022.08.017
M3 - Article
SN - 0168-583X
VL - 530
SP - 53
EP - 58
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -