A new 7Be AMS capability established at CAMS and the potential for large datasets

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:414

Article

Hidy, Alan J.¹  Brown, Thomas A.¹  Tumey, Scott J.¹  Zimmerman, Susan R. H.¹  Gharibyan, Narek²  Frank, Matthias³  Bench, Graham¹ 

[1] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA

[2] Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Livermore, CA 94550 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

关键词: AMS;    CAMS;    Be-7;    Be-10;   

DOI  :  10.1016/j.nimb.2017.11.017

来源: Elsevier

【 摘 要 】

We have developed a Be-7 measurement capability at the Center for Accelerator Mass Spectrometry (CAMS) at Lawrence Livermore National Lab. This capability is tested with dilutions of a commercial Be-7 tracer, a new 7Be reference material produced at CAMS (which we verify to be free of Be-10), and with experimental targets from a variety of sample matrices. Our results indicate that Be-7 can be measured at high precision for low activities (similar to 1% for 0.1 Bq; 10% for 0.001 Bq), with an estimated detection limit of similar to 0.0001 Bq (Be-7/Be-9 of similar to 7 X 10(-17); equivalent to similar to 10(3) atoms)-more than two orders of magnitude lower than that typical of counting techniques. Furthermore, because Be-10 and Be-7 sample preparation are identical, both isotopes can be measured on the same target with no additional laboratory preparation.

【 授权许可】

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