14C AMS measurements of <100 μg samples with a high-current system

被引：36

作者：

Von Reden, KF ^{[1
]}

McNichol, AP ^{[1
]}

Pearson, A ^{[1
]}

Schneider, RJ ^{[1
]}

机构：

[1] Woods Hole Oceanog Inst, Natl Ocean Sci AMS Facil, Woods Hole, MA 02543 USA

来源：

RADIOCARBON | 1998年 / 40卷 / 01期

关键词：

D O I：

10.1017/S0033822200018117

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The NOSAMS facility at Woods Hole Oceanographic Institution has started to develop and apply techniques for measuring very small samples on a standard Tandetron accelerator mass spectrometry (AMS) system with high-current hemispherical Cs sputter ion sources. Over the past year, results on samples ranging from 7 to 160 mu g C showed both the feasibility of such analyses and the present limitations on reducing the size of solid carbon samples. One of the main factors affecting the AMS results is the dependence of a number of the beam optics parameters on the extracted ion beam current. The extracted currents range from 0.5 to 10 mu A of C-12(-) for the sample sizes given above. We here discuss the setup of the AMS system and methods for reliable small-sample measurements and give the AMS-related limits to sample size and the measurement uncertainties.

引用

页码：247 / 253

页数：7

共 10 条

[1] Corrections for contamination background in AMS C-14 measurements [J].

Brown, TA ;

Southon, JR .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1997, 123 (1-4) :208-213

[2] AUTOMATED SAMPLE PROCESSING AT THE NATIONAL OCEAN SCIENCES AMS FACILITY [J].

COHEN, GJ ;

HUTTON, DL ;

OSBORNE, EA ;

VONREDEN, KF ;

GAGNON, AR ;

MCNICHOL, AP ;

JONES, GA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 92 (1-4) :129-133

[3] Gas chromatographic isolation of individual compounds from complex matrices for radiocarbon dating [J].

Eglinton, TI ;

Aluwihare, LI ;

Bauer, JE ;

Druffel, ERM ;

McNichol, AP .

ANALYTICAL CHEMISTRY, 1996, 68 (05) :904-912

[4]

GAGNON AR, 1997, 16 INT 14C C GRON

[5]

KOWALSKI S, 1987, RAYTRACE COMPUTER PR

[6]

MCNICHOL AP, 1997, UNPUB 16 INT 14C C G

[7] INTERNAL AND EXTERNAL CHECKS IN THE NOSAMS SAMPLE PREPARATION LABORATORY FOR TARGET QUALITY AND HOMOGENEITY [J].

OSBORNE, EA ;

MCNICHOL, AP ;

GAGNON, AR ;

HUTTON, DL ;

JONES, GA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 92 (1-4) :158-161

[8] CATALYST AND BINDER EFFECTS IN THE USE OF FILAMENTOUS GRAPHITE FOR AMS [J].

VOGEL, JS ;

SOUTHON, JR ;

NELSON, DE .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 29 (1-2) :50-56

[9] PERFORMANCE-CHARACTERISTICS OF THE 3-MV TANDETRON AMS SYSTEM AT THE NATIONAL-OCEAN-SCIENCES-AMS-FACILITY [J].

VONREDEN, KF ;

SCHNEIDER, RJ ;

COHEN, GJ ;

JONES, GA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 92 (1-4) :7-11

[10]

WHITE NR, 1987, SORCERY COMPUTER PRO

← 1 →

14C AMS measurements of &lt;100 μg samples with a high-current system

14C AMS measurements of <100 μg samples with a high-current system