Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2012 Mar 30;335(6076):1614-7.
doi: 10.1126/science.1215510.

RETRACTED: A shorter 146Sm half-life measured and implications for 146Sm-142Nd chronology in the solar system

N Kinoshita  1 , M Paul, Y Kashiv, P Collon, C M Deibel, B DiGiovine, J P Greene, D J Henderson, C L Jiang, S T Marley, T Nakanishi, R C Pardo, K E Rehm, D Robertson, R Scott, C Schmitt, X D Tang, R Vondrasek, A Yokoyama
Affiliations

RETRACTED: A shorter 146Sm half-life measured and implications for 146Sm-142Nd chronology in the solar system

N Kinoshita et al. Science. .

Retraction in

  • Retraction.
    Kinoshita N, Paul M, Kashiv Y, Collon P, Deibel CM, DiGiovine B, Greene JP, Jiang CL, Marley ST, Pardo RC, Rehm KE, Robertson D, Scott R, Schmitt C, Tang XD, Vondrasek R, Yokoyama A. Kinoshita N, et al. Science. 2023 Mar 31;379(6639):1307. doi: 10.1126/science.adh7739. Epub 2023 Mar 30. Science. 2023. PMID: 36996231 No abstract available.

Abstract

The extinct p-process nuclide (146)Sm serves as an astrophysical and geochemical chronometer through measurements of isotopic anomalies of its α-decay daughter (142)Nd. Based on analyses of (146)Sm/(147)Sm α-activity and atom ratios, we determined the half-life of (146)Sm to be 68 ± 7 (1σ) million years, which is shorter than the currently used value of 103 ± 5 million years. This half-life value implies a higher initial (146)Sm abundance in the early solar system, ((146)Sm/(144)Sm)(0) = 0.0094 ± 0.0005 (2σ), than previously estimated. Terrestrial, lunar, and martian planetary silicate mantle differentiation events dated with (146)Sm-(142)Nd converge to a shorter time span and in general to earlier times, due to the combined effect of the new (146)Sm half-life and ((146)Sm/(144)Sm)(0) values.

PubMed Disclaimer

Publication types

LinkOut - more resources