Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites

Maria Schonbachler; Manuela A. Fehr; Mark Rehkämper; Alex N. Halliday; Maria Schönbächler; Bodo Hattendorf; Detlef Günther

doi:10.1016/j.gca.2006.04.019

Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites

Maria Schonbachler, Manuela A. Fehr, Mark Rehkämper, Alex N. Halliday, Maria Schönbächler, Bodo Hattendorf, Detlef Günther

Research output: Contribution to journal › Article › peer-review

Abstract

Tellurium isotope data acquired by multiple-collector inductively coupled plasma-mass spectrometry (MC-ICPMS) are presented for sequential acid leachates of the carbonaceous chondrites Orgueil, Murchison, and Allende. Tellurium isotopes are produced by a broad range of nucleosynthetic pathways and they are therefore of particular interest given the isotopic anomalies previously identified for other elements in these meteorites. In addition, the data provide new constraints on the initial solar system abundance of the r-process nuclide 126Sn, which decays to 126Te with a half-life of 234,500 years. The 126Te/128Te ratios of all leachates were found to be identical, within uncertainty, despite variations in 124Sn/128Te of between about 0.002 and 1.4. The data define a 126Sn/124Sn ratio of

Original language	English
Pages (from-to)	3436-3448
Number of pages	12
Journal	Geochimica et Cosmochimica Acta
Volume	70
Issue number	13
DOIs	https://doi.org/10.1016/j.gca.2006.04.019
Publication status	Published - 1 Jul 2006

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title = "Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites",

abstract = "Tellurium isotope data acquired by multiple-collector inductively coupled plasma-mass spectrometry (MC-ICPMS) are presented for sequential acid leachates of the carbonaceous chondrites Orgueil, Murchison, and Allende. Tellurium isotopes are produced by a broad range of nucleosynthetic pathways and they are therefore of particular interest given the isotopic anomalies previously identified for other elements in these meteorites. In addition, the data provide new constraints on the initial solar system abundance of the r-process nuclide 126Sn, which decays to 126Te with a half-life of 234,500 years. The 126Te/128Te ratios of all leachates were found to be identical, within uncertainty, despite variations in 124Sn/128Te of between about 0.002 and 1.4. The data define a 126Sn/124Sn ratio of",

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TY - JOUR

T1 - Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites

AU - Schonbachler, Maria

AU - Fehr, Manuela A.

AU - Rehkämper, Mark

AU - Halliday, Alex N.

AU - Schönbächler, Maria

AU - Hattendorf, Bodo

AU - Günther, Detlef

PY - 2006/7/1

Y1 - 2006/7/1

N2 - Tellurium isotope data acquired by multiple-collector inductively coupled plasma-mass spectrometry (MC-ICPMS) are presented for sequential acid leachates of the carbonaceous chondrites Orgueil, Murchison, and Allende. Tellurium isotopes are produced by a broad range of nucleosynthetic pathways and they are therefore of particular interest given the isotopic anomalies previously identified for other elements in these meteorites. In addition, the data provide new constraints on the initial solar system abundance of the r-process nuclide 126Sn, which decays to 126Te with a half-life of 234,500 years. The 126Te/128Te ratios of all leachates were found to be identical, within uncertainty, despite variations in 124Sn/128Te of between about 0.002 and 1.4. The data define a 126Sn/124Sn ratio of

AB - Tellurium isotope data acquired by multiple-collector inductively coupled plasma-mass spectrometry (MC-ICPMS) are presented for sequential acid leachates of the carbonaceous chondrites Orgueil, Murchison, and Allende. Tellurium isotopes are produced by a broad range of nucleosynthetic pathways and they are therefore of particular interest given the isotopic anomalies previously identified for other elements in these meteorites. In addition, the data provide new constraints on the initial solar system abundance of the r-process nuclide 126Sn, which decays to 126Te with a half-life of 234,500 years. The 126Te/128Te ratios of all leachates were found to be identical, within uncertainty, despite variations in 124Sn/128Te of between about 0.002 and 1.4. The data define a 126Sn/124Sn ratio of

U2 - 10.1016/j.gca.2006.04.019

DO - 10.1016/j.gca.2006.04.019

M3 - Article

VL - 70

SP - 3436

EP - 3448

JO - Geochimica et Cosmochimica Acta

JF - Geochimica et Cosmochimica Acta

SN - 0016-7037

IS - 13

ER -

Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites

Abstract

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