A study of the trace 39Ar content in argon from deep underground sources

@article{Xu2015ASO,
  title={A study of the trace 39Ar content in argon from deep underground sources},
  author={J. Xu and F. Calaprice and C. Galbiati and A. Goretti and G. Guray and T. Hohman and D. Holtz and A. Ianni and M. Laubenstein and B. Loer and C. Love and C. Martoff and D. Montanari and S. Mukhopadhyay and A. Nelson and S. Rountree and R. Vogelaar and A. Wright},
  journal={Astroparticle Physics},
  year={2015},
  volume={66},
  pages={53-60}
}
Abstract The discovery of argon from deep underground sources with significantly less 39Ar than atmospheric argon was an important step in the development of direct dark matter detection experiments using argon as the active target. We report on the design and operation of a low-background single-phase liquid argon detector that was built to study the 39Ar content of this underground argon. Underground argon from the Kinder Morgan CO 2 plant in Cortez, Colorado was determined to have less than… Expand
Low energy neutron background in deep underground laboratories
Abstract The natural neutron background influences the maximum achievable sensitivity in most deep underground nuclear, astroparticle and double-beta decay physics experiments. Reliable neutron fluxExpand
³⁹Ar/Ar measurements using ultra-low background proportional counters.
  • Jeter Hall, C. Aalseth, +6 authors A. Seifert
  • Environmental Science, Medicine
  • Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
  • 2016
Age-dating groundwater and seawater using the (39)Ar/Ar ratio is an important tool to understand water mass-flow rates and mean residence time. Low-background proportional counters developed atExpand
Subterranean production of neutrons, 39 Ar and 21 Ne: Rates and uncertainties
Abstract Accurate understanding of the subsurface production rate of the radionuclide 39 Ar is necessary for argon dating techniques and noble gas geochemistry of the shallow and the deep Earth, andExpand
Dating of ice and ocean samples with Atom Trap Trace Analysis of 39Ar
The noble gas radioisotope 39Ar with a half-life of 269 years is an almost ideal tracer for dating ice and water samples in the time range of 50 to 1000 years ago, for which no other reliable methodsExpand
The DarkSide direct dark matter search with liquid argon
The DarkSide-50 direct dark matter detector is a liquid argon time projection chamber (TPC) surrounded by a liquid scintillator neutron veto (LSV) and a water Cerenkov muon veto (WCV). Located underExpand
DarkSide-50: a WIMP search with a two-phase argon TPC
Abstract DarkSide-50 is a two phase argon TPC for direct dark matter detection which is installed at the Gran Sasso underground laboratory, Italy. DarkSide-50 has a 50-kg active volume and will makeExpand
Review of high-sensitivity Radon studies
A challenge in many present cutting-edge particle physics experiments is the stringent requirements in terms of radioactive background. In peculiar, the prevention of Radon, a radioactive noble gas,Expand
Cosmic Muon Flux Measurements at the Kimballton Underground Research Facility
In this article, the results from a series of muon flux measurements conducted at the Kimballton Underground Research Facility (KURF), Virginia, United States, are presented. The detector employedExpand
Long term operation with the DarkSide-50 detector
DarkSide is a staged experimental project based on radiopure argon aiming at direct dark matter detection. The DarkSide-50 (DS-50) detector is currently operating underground at the Gran SassoExpand
First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso
We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possiblyExpand
...
1
2
3
4
...

References

SHOWING 1-10 OF 44 REFERENCES
Discovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors
Abstract We report on the first measurement of 39 Ar in argon from underground natural gas reservoirs. The gas stored in the US National Helium Reserve was found to contain a low level of 39 Ar. TheExpand
Measurement of the specific activity of 39Ar in natural argon
Abstract We report on the measurement of the specific activity of 39Ar in natural argon. The measurement was performed with a 2.3-l two-phase (liquid and gas) argon drift chamber. The detector wasExpand
First results from a dark matter search with liquid argon at 87 K in the Gran Sasso underground laboratory
Abstract A new method of searching for dark matter in the form of weakly interacting massive particles (WIMP) has been developed with the direct detection of the low energy nuclear recoils observedExpand
Reducing potassium contamination for AMS detection of 39Ar with an electron-cyclotron-resonance ion source
Abstract The first application of 39Ar Accelerator Mass Spectrometry (AMS) at the ATLAS facility of Argonne National Laboratory was to date ocean water samples relevant to oceanographic studies usingExpand
Development of an AMS method to study oceanic circulation characteristics using cosmogenic 39Ar
Initial experiments at the ATLAS facility [Nucl. Instr. and Meth. B 92 (1994) 241] resulted in a clear detection of cosmogenic Ar-39 signal at the natural level. The present paper summarizes theExpand
A dating method with39Ar
Abstract The principles of a dating method based on the cosmic-ray-produced radioisotope 39 Ar are given. Technical requirements such as background and standard gas samples and gas proportionalExpand
Argon-39, argon-37 and krypton-85 isotopes in Stripa groundwaters
Abstract 39 Ar, 37 Ar and 85 Kr activities in groundwater samples from three boreholes in the Stripa granite are compared with 222 Rn activities and with data from a granitic groundwater inExpand
DEVELOPMENT OF ECR HIGH PURITY LINERS FOR REDUCING K CONTAMINATION FOR AMS STUDIES OF Ar
The first application of Ar Accelerator Mass Spectrometry (AMS) at the ATLAS linac of Argonne National Laboratory (ANL) was to date ocean water samples relevant to oceanographic studies using theExpand
Technique for direct detection of weakly interacting massive particles using scintillation time discrimination in liquid argon
Abstract Discrimination between electron and nuclear recoil events in a liquid argon scintillation detector has been demonstrated with simulations by using the differences in the scintillation photonExpand
Upper mantle origin for Harding County well gases
Short-lived radioisotopes such as 129I and 244Pu represent extremely powerful geochemical tools for tracing the early history of the Earth. Terrestrial 129Xe anomalies were first found in CO2-richExpand
...
1
2
3
4
5
...