کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1681158 | 1518688 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
10Be and 26Al low-energy AMS using He-stripping and background suppression via an absorber
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The transmission of the ion beam through a tandem accelerator is a critical parameter for efficient detection of long-lived radionuclides by sensitive accelerator mass spectrometry (AMS). With beam energies at the accelerator terminal of less than 600Â keV, high transmissions are obtained using He as stripper gas. Here, we discuss Be, B, and Al transmissions in view of their application in the AMS determination of the long-lived radioisotopes 10Be and 26Al with compact facilities. The charge state 2+ of Al and Be shows a high yield, but in both cases an intense background from other nuclides has to be handled. The applicability of a combination of an absorber cell with a gas ionization chamber was tested for suppression of the main background for 10Be2+ (10B2+) and 26Al2+ (13C1+). Energy loss simulations of the involved nuclides confirm the performance observed in the experiments. The findings concerning He stripping and detection methods at low energies may allow the construction of very compact AMS setups for light isotopes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 331, 15 July 2014, Pages 209-214
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 331, 15 July 2014, Pages 209-214
نویسندگان
Johannes Lachner, Marcus Christl, Arnold Milenko Müller, Martin Suter, Hans-Arno Synal,