Dr Timothy D J Knowles

BSc(Bristol), PhD(Bristol)

  • BS8 1TS

2010 …2109

Research output per year

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Personal profile

Research interests

I am a Senior Research Associate in Accelerator Mass Spectrometry, managing the new Bristol Radiocarbon Accelerator Mass Spectrometry Facility (BRAMS).  The facility, is located within the Department of Archaeology and Anthropology, but spans the faculties of Arts and Science will house a state-of-the-art MICADAS (Mini radioCarbon Dating System) accelerator mass spectrometer with an ion source capable of accepting solid (graphite) or gaseous (CO2) samples. This will be supported by a fully automated graphitization system and will be able to directly accept CO2 generated by an elemental analyser and a carbonate handling system.  One of the aims of the facility is to push the boundaries of the sample preparation and introduction techniques and the types of scientific questions which can be addressed by AMS, and as such there is a strong emphasis on the development of compound- and compound class-specific methodologies for radiocarbon analyses.

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Research Output

  • 17 Article (Academic Journal)
  • 1 Chapter in a book
  • 1 Conference Contribution (Conference Proceeding)

Accurate compound-specific 14C dating of archaeological pottery vessels

Casanova, E. J. A., Knowles, T. D. J., Bayliss, A., Dunne, J. B., Baranski, M. Z., Denaire, A., Lefranc, P., di Lernia, S., Roffet-Salque, M., Smyth, J., Barclay, A., Gillard, T., Claβe, E., Coles, B., Ilett, M., Jeunesse, C., Krueger, M., Marciniak, A., Minnitt, S., Rotunno, R. & 5 others, van de Velde, P., van Wijk, I., Cotton, J., Daykin, A. & Evershed, R. P., 23 Apr 2020, In : Nature. 580, p. 506–510 5 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
  • 8 Downloads (Pure)

    Anta 1 de Val da Laje – the first direct view at diet, dairying 1 practice and socio-economic aspects of pottery use in the final 2 Neolithic of central Portugal

    Stojanovski, D., Roffet-Salque, M., Casanova, E., Knowles, T., Oosterbeek, L., Evershed, R. P., Cruz, A., Thissen, L. & Arzarello, M., 17 Feb 2020, In : Quaternary International. 27 p.

    Research output: Contribution to journalArticle (Academic Journal)

  • 14C wiggle-matching of short tree-ring sequences from post-medieval buildings in England

    Marshall, P., Bayliss, A., Farid, S., Tyers, C., Bronk Ramsey, C., Cook, G., Doğan, T., Freeman, S. P. H. T., İlkmen, E. & Knowles, T., 1 Jan 2019, In : Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 438, p. 218-226 9 p.

    Research output: Contribution to journalArticle (Academic Journal)

    Open Access
  • 4 Citations (Scopus)
    163 Downloads (Pure)