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Helium and Argon Isotopic Studies of Fossil Material and the Theoretical Evolution of He and Ar in Earth’s Atmosphere through Time
Fossils Argon Helium Isotopes Atmospheric Evolution
2013/3/11
We analyzed the elemental concentrations and the isotopic compositions of helium and argon in Cambrian to Jurrassic aged Gastropod, Ammonite and Trilobite fossils in order to examine variation in thes...
Study of infrared scintillations in gaseous and liquid argon - Part II: light yield and possible applications
Near infrared scintillations in noble gases and liquids Electroluminescence Rareevent experiments Instrumentation and Detectors
2012/4/19
We present here a comprehensive study of the light yield of primary and secondary scintillations produced in gaseous and liquid Ar in the near infrared (NIR) and visible region, at cryogenic temperatu...
Study of infrared scintillations in gaseous and liquid argon - Part I: methodology and time measurements
Near infrared scintillations in noble gases and liquids Electroluminescence in noble gases Geiger-mode APDs
2012/4/19
A methodology to measure Near Infrared (NIR) scintillations in gaseous and liquid Ar, using Geiger-mode APDs (GAPDs) sensitive in the NIR and pulsed X-ray irradiation, is described. This study has bee...
The Impact of Multichannel and Multipole Effects on the Cooper Minimum in the High-Harmonics Spectrum of Argon
Impact of Multichannel Multipole Effects Cooper Minimum the High-Harmonics Spectrum Argon
2012/2/28
We investigate the relevance of multiple-orbital and multipole effects during high-harmonic generation (HHG). The time-dependent configuration-interaction singles (TDCIS) approach is used to study the...
Simulated Annealing Study on Structures and Energetics of CO2 in Argon Clusters
Molecular structure van der Waals cluster Simulated annealing algorithm
2012/4/5
The minimum-energy configurations and energetic properties of the ArN-CO2 (N=1-19) van der Waals clusters were investigated by a simulated annealing algorithm. A newly de-veloped Ar-CO2 potential ener...
Observation of (N2)2 dimers in free nitrogen and argon-nitrogen clusters
(N2)2 dimers free nitrogen argon-nitrogen clusters
2011/8/4
Abstract: Supersonic-jet luminescence spectroscopy was applied to study vibronic transitions in icosahedral N2 and Ar-N2 clusters having from 100 to 400 particles per cluster. In the case of mixed Ar-...
Infrared scintillation yield in gaseous and liquid argon for rare-event experiments
Infrared scintillation yield gaseous liquid
2011/4/7
Infrared scintillation yield in gaseous and liquid argon for rare-event experiments 。
Development of an anti-Compton veto for HPGe detectors operated in liquid argon using Silicon Photo-Multipliers
anti-Compton veto HPGe detectors liquid argon
2010/11/16
A proof of concept detector is presented for scintillation light detection in liquid argon using Silicon Photo-Multipliers. The aim of the work is to build an anti-Compton veto for germanium detector...
Spectral dependence of purely-Kerr driven filamentation in air and argon
Spectral dependence purely-Kerr driven filamentation argon
2010/11/16
Based on numerical simulations, we show that higher-order nonlinear indices (up to $n_8$ and $n_{10}$, respectively) of air and argon have a dominant contribution to both focusing and defocusing in t...
Measurement of the two-photon absorption cross-section of liquid argon with a time projection chamber
Measurement two-photon absorption cross-section of liquid argon with a time projection chamber
2011/1/6
This paper reports on laser induced multiphoton ionization at 266 nm of liquid Argon in a Time Projection Chamber (LAr TPC) detector. The electron signal produced by the laser beam is a formidable too...
One and Two-photon Excited Optogalvanic Spectra of Argon in the Wavelength Region of 735 − 850 nm
photon Spectra Argon Wavelength
2010/9/16
Optogalvanic (OG) spectra of argon in the visible to near-infrared spectral region between 735 and 850 nm were investigated using a Grimm-style glow-discharge tube, which has been widely used to obtai...
Production of highly charged argon ions from a room temperature electron beam ion trap
EBIS highly charged ion ionization time
2009/8/14
In this work, highly charged ions have been extracted from the advanced Electron Beam Ion Source (EBIS-A) developed in a scientific cooperation between the Dresden University of Technology and the DRE...
ON THE STARK WIDTH REGULARITIES ALONG THE ARGON ISONUCLEAR SEQUENCE
STARK WIDTH REGULARITIES ARGON ISONUCLEAR SEQUENCE
2009/3/26
Recent values of the measured spectral lines Stark widths (since
1988) for neutral and ionized argon atoms, have been compared to the values previously
predicted by us. These were found from the est...
ON TEH STARK WIDTH REGULARITIES IN THE SINGLY IONIZED ARGON SPECTRUM
TEH STARK WIDTH REGULARITIES SINGLY IONIZED ARGON SPECTRUM
2009/3/19
The existence of the Stark width dependence on the upper-level
ionization potential of the quantum transition have been presented for the four
types of transitions (4s’ - 4p’, 4p’ - 4d’, 4p - 5s, 3d...
Argon isotope ratio of the plume-source deduced from high-resolution stepwise crushing extraction
3He/4He 40Ar/36Ar noble gases Loihi mantle plume
2017/8/10
We have carried out noble gas analysis for gases released by a high-resolution stepwise crushing on basaltic glass and olivine separated from a new set of pillow basalts collected form the Loihi seamo...