https://www.ancienttl.org/ <p>Ancient TL (electronic ISSN 2693-0935) is a community-based, not-for-profit, peer-reviewed, diamond open access journal with bi-annual issues in June and December. It is devoted to theoretical and experimental luminescence and electron spin resonance (ESR) research. This includes research on environmental dose rate, rock thermal histories (e.g., low-temperature thermochronometry) and mineral provenance and characterisation. Manuscripts on luminescence and ESR dating, on software codes, numerical models and on instrumentation are also welcome. Ancient TL also publishes interlaboratory comparisons, standardisation procedures, failed experiments, as well as observations difficult to explain. Following Ancient TL’s tradition, manuscripts about practical aspects of laboratory and field work are explicitly welcome.</p> <p>Periodically, Ancient TL publishes an up-to-date bibliography, thesis abstracts, and miscellaneous information for the community. Accepted articles are published immediately online (rolling publishing) before being included in one of the bi-annual issues.</p> University of Lausanne en-US Ancient TL 2693-0935 https://www.ancienttl.org/article/view/6884 Christoph Schmidt Copyright (c) 2025 Christoph Schmidt https://creativecommons.org/licenses/by/4.0 2025-01-11 2025-01-11 42 2 1 2 10.26034/la.atl.2024.6884 https://www.ancienttl.org/article/view/6885 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>A new granite-doped concrete block with 60 cm x 60 cm x 60 cm dimensions has been built at CENIEH, Burgos, Spain, for dosimetry calibration and cross-referencing purposes. Independent evaluations of the block’s gamma dose rate using passive Al₂O₃:C dosimeters and various field gamma spectrometer (NaI) probes produce consistent results of 1495 ± 51 μGy a^-1and 1514 ± 43 μGy a^-1 (or 1537 ± 19 μGy a^-1, depending on the evaluation procedure employed), respectively. Bulk radioelement concentrations calculated from field gamma spectrometry using the Windows method are as follows: K = 1.58 ± 0.08 %, U = 4.26 ± 0.28 ppm, and Th = 12.62 ± 0.72 ppm. This new block complements existing dosimetry reference materials accessible at other laboratories and is available for the broader trapped charge dating community to use for instrument calibration, reproducibility assessments and intercomparison studies.</p> </div> </div> </div> Mathieu Duval Miren del Val María Jesús Alonso Escarza Lee J. Arnold Martina Demuro Verónica Guilarte Raju Kumar Norbert Mercier Jean-Luc Schwenninger Chantal Tribolo Gloria I. López Copyright (c) 2025 Mathieu Duval, Miren del Val, María Jesús Alonso Escarza, Lee J. Arnold, Martina Demuro, Verónica Guilarte, Raju Kumar, Norbert Mercier, Jean-Luc Schwenninger, Chantal Tribolo, Gloria I. López https://creativecommons.org/licenses/by/4.0 2025-01-11 2025-01-11 42 2 3 13 10.26034/la.atl.2024.6885 https://www.ancienttl.org/article/view/6889 Ancient TL Copyright (c) 2025 Ancient TL https://creativecommons.org/licenses/by/4.0 2025-01-11 2025-01-11 42 2 19 32 10.26034/la.atl.2024.6889 https://www.ancienttl.org/article/view/6890 Ancient TL Copyright (c) 2025 Ancient TL https://creativecommons.org/licenses/by/4.0 2025-01-11 2025-01-11 42 2 14 18 10.26034/la.atl.2024.6890 https://www.ancienttl.org/article/view/6892 Ancient TL Copyright (c) 2025 Ancient TL https://creativecommons.org/licenses/by/4.0 2025-01-11 2025-01-11 42 2 33 33