Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Abbreviation

Nucl. instrum. methods phys. res., B Beam interact. mater. atoms

Publisher

Elsevier

Journal Volumes

ISSN

0168-583X
1872-9584

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Publications1 - 10 of 207
  • AMS of Cl-36 with the VERA 3 MV tandem accelerator
    Item type: Conference Paper
    Martschini, Martin; Andersson, Pontus; Forstner, Oliver; et al. (2013)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • Initial tests of 26Al fluoride target matrix on MILEA AMS system
    Item type: Journal Article
    Fenclová, K.; Prášek, T.; Němec, Mojmír; et al. (2021)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
    In this study, the possibility of using a superhalogenide ion AlF4- extracted from Na3AlF6 based target materials for 26Al/27Al measurements by Accelerator Mass Spectrometry (AMS) was investigated. Determination of 26Al by usual mass spectrometric methods is generally hampered by the presence of the isobar 26Mg. However, the AMS method enables significant suppression of this interference, particularly by negative ion formation. After initial current tests in a caesium sputtering ion source of the Tandetron system, performance of the fluoride materials was analysed on the MILEA AMS system at ETH Zürich. The AlF4- current was used to evaluate the performance of the respective samples. Additives as PbF2 were tested to increase the extracted ion currents and samples containing MgF2 were used to investigate the presence of isobaric ions. Subsequently, the ionization efficiency of AlF4- was determined by recording the 27Al2+ current on the high energy side and the signals of 26Al2+ were investigated with the gas ionization detector.
  • C-14 analysis of groundwater down to the millilitre level
    Item type: Conference Paper
    Molnár, Mihály; Hajdas, Irka; Janovics, Róbert; et al. (2013)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • A versatile gas interface for routine radiocarbon analysis with a gas ion source
    Item type: Journal Article
    Wacker, L.; Fahrni, S. M.; Hajdas, I.; et al. (2013)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • BioMICADAS: Compact next generation AMS system for pharmaceutical science
    Item type: Conference Paper
    Schulze-König, Tim; Dueker, Stephen R.; Giacomo, Jason; et al. (2010)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
    The next generation Accelerator Mass Spectrometer system specifically designed to address the needs of the growing pharmaceutical science market has passed validation testing. The system dubbed BioMICADAS is based on a previously developed compact carbon dating instrument, the MICADAS. Like its predecessor, it has an overall footprint of only 2.5 × 3 m2 and uses a 200 kV high voltage platform for tandem based ion acceleration. The ion source can accommodate samples as graphite or gaseous CO2. It is equipped with two independently operating vacuum locks, allowing continuous measurement sequence and providing a capacity of ∼20,000 samples per annum. A barcoded cathode tracking system allows data capture into Laboratory Information Management System (LIMS) for Good Laboratory Practices (GLP) regulated work. It can be housed in research laboratories alongside other complementary bioanalytical equipment and operated by general laboratory staff as the system is designed to be robust and user-friendly. The system has undergone rigorous validation over the range from 0.1 to 100 Modern Carbon, including accuracy, linearity, robustness, and precision experiments over the course of 7 months. It has been shipped and installed at the site of our collaborative partner, Vitalea Science in Davis, California. The installation process took ∼2 weeks from boxes to beam. The feasibility of the system to determine the absolute specific activity of biogenic samples was also shown by using the method of isotopic dilution.
  • Preparation of a multi-isotope plutonium AMS standard and preliminary results of a first inter-lab comparison
    Item type: Conference Paper
    Dittmann, B.A.; Dunai, Tibor J.; Dewald, Alfred B.; et al. (2015)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • Microgram level radiocarbon (14C) determination on carbonaceous particles in ice
    Item type: Conference Paper
    Jenk, T. M.; Szidat, S.; Schwikowski, M.; et al. (2007)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • 41Ca measurements on the 1 MV AMS facility at the Centro Nacional de Aceleradores (CNA, Spain)
    Item type: Journal Article
    Vivo-Vilches, C.; López-Gutiérrez, José M.; García-León, Manuel; et al. (2017)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • Structural changes in helium implanted Zr0.8Y0.2O1.9 single crystals characterized by atomic force microscopy and EXAFS spectroscopy
    Item type: Conference Paper
    Kuri, G.; Gavillet, D.; Döbeli, M.; et al. (2008)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  • Performance of the 1 MV Accelerator Mass Spectrometry system at the Centro Nacional de Aceleradores for the analysis of 233U at environmental levels
    Item type: Journal Article
    Chamizo, Elena; López-Lora, Mercedes; Christl, Marcus (2022)
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
    233U (T1/2 = 0.159 My) has aroused much interest in the last few years because of the potential of 233U/236U to inform about anthropogenic U sources. The reported 233U/238U atom ratios in general environmental samples are in the 10−12–10−6 range. We demonstrate that 233U/238U abundance sensitivities at the 5 × 10−11 level can be achieved at the 1 MV Accelerator Mass Spectrometry system at the Centro Nacional de Aceleradores (CNA, Seville, Spain). Unresolved 234U, 235U and 232Th molecular fragments are identified as the main 233U background contributors and procedures to subtract them are proposed. 233U/238U and 236U/238U atom ratios were analysed in the IAEA reference materials coded Soil-6, 300, 385, 410, and 412 at the CNA and at the 600 kV ETH AMS system for intercomparison. 233U/238U atom ratios for samples 412 and 385 were only reported by the ETH.
Publications1 - 10 of 207