@article{74,
  keywords = {geochronology, U-Pb geochronology, Isotopes, Binary alloys, Mass spectrometers, Thallium alloys, Thallium metallography, Uranium metallography, Princeton University, Lead metallography, Ions, Lead, Radiation counters, Thermal insulating materials, Broad application, Gain stability, High-precision, Isotope dilutions, Reproducibilities, Thermal ionisation},
  author = {D. Szymanowski and B. Schoene},
  title = {U-Pb ID-TIMS geochronology using ATONA amplifiers},
  abstract = { We document the performance of new ATONA ({\textquoteright}aA to nA{\textquoteright}) amplifiers installed on an Isotopx Phoenix thermal ionisation mass spectrometer (TIMS) at Princeton University and evaluate their suitability for high-precision analyses of Pb and U isotopes in pg- to ng-size samples characteristic for U-Pb geochronology. The new amplifiers are characterised by low and stable noise levels comparable to 1012 to 1013 ohm resistors, response time 10-14 A (1 mV relative to a 1011 ohm amplifier or ca. 60 kcps). As such currents are routinely achievable for major Pb peaks of interest (205-208Pb) in natural samples containing more than ca. 10 pg Pb* (radiogenic Pb), we expect ATONA-Faraday detection to find broad applications in U-Pb geochronology. Its practical use for low-blank, radiogenic samples continues to require ion counting for 204Pb, either with a fixed Faraday-ion counter gain or using a dynamic two-step (e.g. FaraDaly) method. Routine adoption of ATONA-Faraday collection in place of ion counting for most major Pb and U isotopes has the potential to increase sample throughput and precision, both improving the accessibility of isotope dilution (ID)-TIMS geochronology and pushing this technique towards better reproducibility. {\textcopyright} 2020 The Royal Society of Chemistry. },
  year = {2020},
  journal = {Journal of Analytical Atomic Spectrometry},
  volume = {35},
  number = {6},
  pages = {1207-1216},
  url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091340651\&doi=10.1039\%2fd0ja00135j\&partnerID=40\&md5=020aee781355e9e53c2097f7e4254071},
  doi = {10.1039/d0ja00135j},
  note = {cited By 3},
  language = {eng},
}