Determination of Os isotopes and Re Os ratios using AMS

R. T.D. Teng; U. Fehn; D. Elmore; T. K. Hemmick; P. W. Kubik; H. E. Gove

doi:10.1016/0168-583X(87)90250-3

Determination of Os isotopes and Re Os ratios using AMS

R. T.D. Teng
, U. Fehn
, D. Elmore
, T. K. Hemmick
, P. W. Kubik
, H. E. Gove

Physics and Astronomy

Stony Brook University

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

19 Scopus citations

Abstract

We report here results of recent determinations of osmium isotope ratios and rhenium/osmium ratios measured with AMS. Because Re forms negative atomic ions with a considerably lower efficiency than Os, Os isotopes can be determined with minimal isobaric interference at mass 187. Detection limits for AMS measurements of osmium are 20 ppb in chemically untreated samples and 0.01 ppb in samples where Os has been preconcentrated with a nickel sulfide method. The fact that Re and Os each form negative ions as oxides at a comparable rate has been used to determine Re Os ratios in untreated meteorite samples.

Original language	English
Pages (from-to)	281-285
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	29
Issue number	1-2
DOIs	https://doi.org/10.1016/0168-583X(87)90250-3
State	Published - Nov 2 1987

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title = "Determination of Os isotopes and Re Os ratios using AMS",

abstract = "We report here results of recent determinations of osmium isotope ratios and rhenium/osmium ratios measured with AMS. Because Re forms negative atomic ions with a considerably lower efficiency than Os, Os isotopes can be determined with minimal isobaric interference at mass 187. Detection limits for AMS measurements of osmium are 20 ppb in chemically untreated samples and 0.01 ppb in samples where Os has been preconcentrated with a nickel sulfide method. The fact that Re and Os each form negative ions as oxides at a comparable rate has been used to determine Re Os ratios in untreated meteorite samples.",

author = "Teng, \{R. T.D.\} and U. Fehn and D. Elmore and Hemmick, \{T. K.\} and Kubik, \{P. W.\} and Gove, \{H. E.\}",

year = "1987",

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doi = "10.1016/0168-583X(87)90250-3",

language = "English",

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TY - JOUR

T1 - Determination of Os isotopes and Re Os ratios using AMS

AU - Teng, R. T.D.

AU - Fehn, U.

AU - Elmore, D.

AU - Hemmick, T. K.

AU - Kubik, P. W.

AU - Gove, H. E.

PY - 1987/11/2

Y1 - 1987/11/2

N2 - We report here results of recent determinations of osmium isotope ratios and rhenium/osmium ratios measured with AMS. Because Re forms negative atomic ions with a considerably lower efficiency than Os, Os isotopes can be determined with minimal isobaric interference at mass 187. Detection limits for AMS measurements of osmium are 20 ppb in chemically untreated samples and 0.01 ppb in samples where Os has been preconcentrated with a nickel sulfide method. The fact that Re and Os each form negative ions as oxides at a comparable rate has been used to determine Re Os ratios in untreated meteorite samples.

AB - We report here results of recent determinations of osmium isotope ratios and rhenium/osmium ratios measured with AMS. Because Re forms negative atomic ions with a considerably lower efficiency than Os, Os isotopes can be determined with minimal isobaric interference at mass 187. Detection limits for AMS measurements of osmium are 20 ppb in chemically untreated samples and 0.01 ppb in samples where Os has been preconcentrated with a nickel sulfide method. The fact that Re and Os each form negative ions as oxides at a comparable rate has been used to determine Re Os ratios in untreated meteorite samples.

UR - https://www.scopus.com/pages/publications/0023451306

U2 - 10.1016/0168-583X(87)90250-3

DO - 10.1016/0168-583X(87)90250-3

M3 - Article

SN - 0168-583X

VL - 29

SP - 281

EP - 285

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

IS - 1-2

ER -

Determination of Os isotopes and Re Os ratios using AMS

Abstract

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