A5013112676- Radioactivity and Radon Measurements
- Geology and Paleoclimatology Research
- Nuclear Physics and Applications
- Radioactive contamination and transfer
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Archaeology and ancient environmental studies
- Pleistocene-Era Hominins and Archaeology
- Neutrino Physics Research
- Radioactive element chemistry and processing
- Isotope Analysis in Ecology
- Particle physics theoretical and experimental studies
- Methane Hydrates and Related Phenomena
- Radioactive Decay and Measurement Techniques
- Astro and Planetary Science
- Nuclear and radioactivity studies
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Marine and environmental studies
- Analytical chemistry methods development
- Lanthanide and Transition Metal Complexes
- Medical Imaging Techniques and Applications
- Planetary Science and Exploration
TU Dresden
2017
Helmholtz-Zentrum Dresden-Rossendorf
2006-2013
Saxon Academy of Sciences and Humanities in Leipzig
2005-2007
TU Bergakademie Freiberg
1988-2007
FZI Research Center for Information Technology
1996
Owens-Illinois (United States)
1960
Abstract. Luminescence dating is a tool frequently used for age determination of Quaternary materials such as archaeological artefacts, volcanic deposits and variety sediments from different environmental settings. The present paper gives an overview the physical basics luminescence dating, necessary procedures sampling to calculation, potential problems that may interfere with correct calculation well identify resolve those problems. Finally, brief summary most common fields application...
The Mauer mandible, holotype of Homo heidelbergensis , was found in 1907 fluvial sands deposited by the Neckar River 10 km southeast Heidelberg, Germany. fossil is an important key to understanding early human occupation Europe north Alps. Given associated mammal fauna and geological context, find layer has been placed Middle Pleistocene, but confirmatory chronometric evidence hitherto missing. Here we show that two independent techniques, combined electron spin resonance/U-series method...
Current models of the peopling higher-elevation zones Tibetan Plateau postulate that permanent occupation could only have been facilitated by an agricultural lifeway at ~3.6 thousand calibrated carbon-14 years before present. Here we report a reanalysis chronology Chusang site, located on central elevation ~4270 meters above sea level. The minimum age site is fixed ~7.4 (thorium-230/uranium dating), with maximum between ~8.20 and 12.67 present (carbon-14 assays). Travel cost modeling...
On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and UK. One day later small meteorite stone found accident in Flensburg. The presence short-lived cosmogenic radionuclides with half-lives as short 16 days proves recent exposure object to cosmic rays space linking it clearly event. An exceptionally time ∼5000 years determined. 24.5 g has fresh black fusion crust, low density <2 g/cm3, magnetic...
Abstract In 1889 the German poet and novelist Theodor Fontane wrote popular literary ballad “Herr von Ribbeck auf im Havelland.” The Squire is described as a gentle generous person, who often gives away pears from his pear trees to children passing by continued donating after death. Now, 135 years later rock called giving us insight into processes that happened 4.5 billion ago. meteorite (official find location: 52°37′15″N, 12°45′40″E) fell January 21, 2024, has been classified brecciated...
This study focusses on dose rate determination in complex settings two drill cores from the site of Niederweningen, northern Switzerland. A crosscheck with a certified standard material and neutron activation analyses (NAA) reveals an overall good performance high-resolution gamma spectrometry (HR-GS) when determining rate-relevant elements. second focus is average water content during burial, by comparing measured sediment moisture uptake capability. Furthermore, layer models are used to...
Abstract Elmshorn fell April 25, 2023, about 30 km northwest of the city Hamburg (Germany). Shortly after fall, 21 pieces were recovered totaling a mass 4277 g. is polymict and anomalous H3‐6 chondritic, fragmental breccia. The rock mixture typical H chondrite lithologies clasts intermediate H/L (or L, based on magnetic properties) origin. In some pieces, dominate, while in others L) components are prevalent. assignment these mean composition their olivines equilibrated type 4 fragments (~Fa...
A search for the various double-$\ensuremath{\beta}$ decay modes of $^{124}\mathrm{Sn}$ and $^{112}\mathrm{Sn}$ has been performed on 75 kg days data. New half-life limits excited states in have obtained including a lower limit into first ${2}^{+}$ state $^{124}\mathrm{Te}$ ${T}_{1/2}>0.87\ifmmode\times\else\texttimes\fi{}{10}^{20} \mathrm{yr}$ (90% C.L.) ${0}^{+}$ ${T}_{1/2}>1.08\ifmmode\times\else\texttimes\fi{}{10}^{20} C.L.). Ground transitions also experimentally explored....
In this study, we report results of the analysis a particularly interesting scaling sample from geothermal plant in Neustadt-Glewe northern Germany, which contained 19% Galena (PbS) and 81% heterogeneous assemblage (Ba,Sr)SO4 crystals with varying compositions, 0.15 < X Ba 0.53. A main fraction (~56%) has barite content ≈ 0.32. We try to relate solid composition solid-solution conditions at concerning temperature, pressure, solution composition, discuss it respect challenges modelling...
The 40Ca(alpha,gamma)44Ti reaction is believed to be the main production channel for radioactive nuclide 44Ti in core-collapse supernovae. Radiation from decaying has been observed so far two supernova remnants, and a precise knowledge of rate may help improve models. astrophysical determined by number narrow resonances. Here, resonance triplet at E_alpha = 4497, 4510, 4523 keV studied both activation, using an underground laboratory gamma counting, in-beam spectrometry. target properties...
In order to reliably estimate the rate of a charged particle induced nuclear reaction in non-explosive astrophysical scenario, its cross-section must be measured far below Coulomb barrier. However, at corresponding energies values are very low, so that experimental counting is dominated by cosmic-ray background, even if suitable anticoincidence shield applied. This problem can overcome performing an accelerator-based experiment deep underground site, as has been done with great success LUNA...
An investigation of the $\ensuremath{\alpha}$ decay $^{147}\mathrm{Sm}$ was performed using an ultra-low-background twin Frisch-grid ionization chamber (TF-GIC). Four natural samarium samples were produced pulsed laser deposition in ultrahigh vacuum. The abundance isotope measured inductively coupled plasma mass spectrometry. A combined half-life value for $1.079(26)\ifmmode\times\else\texttimes\fi{}{10}^{11}$ yr measured. search into first excited state $^{143}\mathrm{Nd}$ has been...