41Ca analysis using CaF− in CIAE–AMS system

He, Ming; Ruan, X. D.; Wu, Shich-Chuan; Wang, Wei; Chaoli, Li; Shen, Hongtao; Wang, Xiang-Gao; Lu, Liyan; Wu, Shaoyong; He, Guo‐Zhong; Jiang, Shan

doi:10.1016/j.nimb.2009.10.035

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…The 135 Ba background from the different conducting media, Fe powder (99.9%), and Ag powder (99.9%) were also measured by AMS. The system comprises an injection system with a 90º spherical electrostatic deflector in front of a double-focusing 112º injection magnet with mass resolution, M/ΔM = 400 to 800 (He et al 2010). A high terminal voltage, up to 13 MV, is produced in the middle of the acceleration tube.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Steps Toward Measurement of ¹³⁵Cs with AMS at CIAE

Yin

Dong

et al. 2017

Radiocarbon

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Abstract135Cs with a half-life of T1/2=2.3×106 yr is an important nuclide in studies of the dispersal of nuclear material in the environment. Preliminary measurements using 133Cs as a proxy for the long-lived 135Cs, with accelerator mass spectrometry (AMS) have been developed at the China Institute of Atomic Energy (CIAE). In order to improve the sensitivity of 135Cs AMS measurement, a new conducting material, Fe powder, was used in the experiment. According to the present results, the background level that can be obtained with blanks was 135Ba/Cs~1.83×10–10 with the CIAE-AMS system. These measurements showed that the Fe was an inferior conducting medium because the interference of 135Ba in Fe powder is 10 times higher than that in Ag powder.

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Section: Experiments and Resultsmentioning

confidence: 99%

Steps Toward Measurement of ¹³⁵Cs with AMS at CIAE

Yin

Dong

et al. 2017

Radiocarbon

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“…In PRIME Lab's present ion source configuration it is very challenging to get ratios with small uncertainties with small samples since the cesium beam is not well enough focused to sputter material in the bottom of the cathode. Another possibility would be to discard the first 1 ml of eluant during sample elution [11], since this ml contains most of the interference. The additional interference counts may also explain why there is a small offset on the order of 1% between the two measurement sets with the samples prepared at PRIME Lab having generally higher ratios.…”

Section: Resultsmentioning

confidence: 99%

“…This surge in applications has led to more demand being made at AMS facilities for 41 Ca assays. However, 41 Ca is a challenging AMS measurement; many interferences (i.e., ions other than 41 Ca) reach the detector, especially when samples come from a biological matrix which invariably contains 41 K, the most pernicious interference of all [10, 11]. The analytical challenge of the 41 Ca AMS measurement creates a natural need for laboratories that routinely measure this isotope to compare results.…”

Section: Introductionmentioning

confidence: 99%

Ultra-trace analysis of 41Ca in urine by accelerator mass spectrometry: An inter-laboratory comparison

Jackson

Hillegonds

Muzikar

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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A 41Ca interlaboratory comparison between Lawrence Livermore National Laboratory (LLNL) and the Purdue Rare Isotope Laboratory (PRIME Lab) has been completed. Analysis of the ratios assayed by accelerator mass spectrometry (AMS) shows that there is no statistically significant difference in the ratios. Further, Bayesian analysis shows that the uncertainties reported by both facilities are correct with the possibility of a slight under-estimation by one laboratory. Finally, the chemistry procedures used by the two facilities to produce CaF2 for the cesium sputter ion source are robust and don't yield any significant differences in the final result.

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“…However, the sensitivity and precision of measurement can not meet the requirements from the ever-increasing application fields. Thanks to the improvements of our system in recent years, AMS techniques have been further developed [7][8][9][10][11][12][13][14], optimized [15][16][17][18] and explored [19][20][21][22][23] step by step. The methods developed for AMS measurement of new nuclides, such as the measurements of fission products 93 Zr, 99 Tc, 121m Sn, 126 Sn 129 I and 151 Sm, and the newly developed DE-Q3D detection technique are among the major advances achieved in our laboratory during recent 12 years.…”

Section: Development Of Measurement and Applicationsmentioning

confidence: 99%