Accelerator mass spectrometer of the center for collective use of the Siberian Branch of the Russian Academy of Sciences

被引：20

作者：

Parkhomchuk, V. V. ^{[1
]}

Rastigeev, S. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Budker Inst Nucl Phys, Novosibirsk 630090, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES | 2011年 / 5卷 / 06期

关键词：

Neutron Technique; Accelerator Mass Spectrometry; Budker Institute; Magnesium Vapor; Accelerator Mass Spectrometer;

D O I：

10.1134/S1027451011110140

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The accelerator mass spectrometer developed at the Budker Institute of Nuclear Physics for (14)C dating has been installed at the Geochronology of the Cenozoic Era Center for Collective Use. Currently, measurement and sample preparation techniques providing necessary accuracy and sensitivity are under development. Stable performance of the accelerator facility under 1-MV operation with a (12)C(+3) ion current above 1 mu A at the analyzer exit is achieved, which provides a (14)C(+3) ion flux of similar to 10(4) ion/h from a contemporary sample ((14)C/(12)C similar to 1.2 x 10(-12)). The counting rate from a "dead" sample (MPG graphite) is less than 100 ion/h. The system is flexible enough to be adapted for operation with aluminum and beryllium isotopes. The first radiocarbon concentration measurements in test samples and the system description are presented.

引用

页码：1068 / 1072

页数：5

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