Processing of Korolevo samples aimed at AMS determination of in situ10Be and 26Al nuclides and their purity control using follow-up mass spectrometry scans

被引：2

作者：

Kamenik, Jan ^{[1
]}

Garba, Roman ^{[1
,2
]}

Stuebner, Konstanze ^{[3
]}

Lachner, Johannes ^{[3
]}

Rugel, Georg ^{[3
]}

Veselovsky, Frantisek ^{[4
]}

Jansen, John D. ^{[5
]}

Usik, Vitaly ^{[6
]}

Kucera, Jan ^{[1
]}

机构：

[1] Czech Acad Sci, Nucl Phys Inst, Husinec Rez, Czech Republic

[2] Czech Acad Sci, Inst Archaeol, Prague, Czech Republic

[3] Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Ion Beam Phys & Mat Res, Dresden, Germany

[4] Czech Geol Survey, Prague, Czech Republic

[5] Czech Acad Sci, Inst Geophys, Prague, Czech Republic

[6] Natl Acad Sci Ukraine, Inst Archaeol, Kiev, Ukraine

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

Terrestrial cosmogenic nuclides; Accelerator mass spectrometry; Be-10; Al-26; Early Pleistocene; Korolevo; QUARTZ; BE-10; PURIFICATION; SEPARATION; NEUTRON;

D O I：

10.1007/s10967-022-08738-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The sample preparation and evaluation of the effects of impurities on the determination of Be-10 and Al-26 by accelerator mass spectrometry (AMS) was performed as an initial part of research project determining the timing of early hominin occupation at Korolevo, western Ukraine. The rock samples analysed exhibited various levels of weathering, lithology, and mass. The follow-up mass spectrometry scans revealed Ti impurity in BeO targets which stimulated quantification of Ti in quartz concentrate. The Al-26 to Be-10 ratios were independent on Ti and Al impurity for samples from the same depositional level. AMS Be current reduction was a function of BeO dilution by TiO2 molecules.

引用

页码：1583 / 1590

页数：8