Showing 901 - 920 results of 3,780 for search '"helium"', query time: 0.25s Refine Results
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    Uplift and erosion of the San Bernardino Mountains associated with transpression along the San Andreas fault, California, as constrained by radiogenic helium thermochronometry by Sieh, Kerry, Spotila, James A., Farley, Kenneth A.

    Published 2012
    “…Apatite helium thermochronometry provides new constraints on the tectonic history of a recently uplifted crystalline mass adjacent to the San Andreas fault. …”
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    Journal Article
  5. 905

    Selective and non-selective excitation/ionization processes in analytical glow discharges: excitation of the ionic spectra in argon/helium mixed plasmas by Mushtaq, Sohail, Steers, Edward B. M., Pickering, Juliet C., Putyera, Karol

    Published 2014
    “…The increasing use of mixed gases, including helium mixtures, in glow discharge mass spectrometry has led to a need to understand the resulting signal enhancements due to changes in excitation and ionization processes. …”
    Article
  6. 906

    Helium-isotope constraints on palaeoceanographic change and sedimentation rates during precession cycles (Cenomanian Scaglia Bianca Formation, central Italy) by Lucas, JR, Batenburg, SJ, Hillegonds, DJ, Mabry, JC, Jenkyns, HC, Ballentine, CJ, Robinson, SA

    Published 2024
    “…Here the novel technique of extraterrestrial helium abundance (<sup>3</sup>He<sub>ET</sub>) is used to investigate the sedimentation dynamics and palaeoceanography within individual precessional cycles. …”
    Journal article
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    LAMB SHIFT AND FINE-STRUCTURE IN 1S3SS-3-1S3PP-3 TRANSITIONS IN HELIUM-LIKE OXYGEN by Jelley, N, Armour, I, Bashkin, S, Myers, E, Obrien, R, Silver, J

    Published 1979
    “…The 33S1-33P0,1,2 transitions in helium-like oxygen have been observed in a foil-excited beam using a 'Doppler cancellation' light-enhancement technique applied to a grating spectrometer. …”
    Journal article
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    Effect of alloy composition and helium ion-irradiation on the mechanical properties of tungsten, tungsten-tantalum and tungsten-rhenium for fusion power applications by Beck, C, Roberts, S, Edmondson, P, Armstrong, D, Beck, C, Roberts, S, Edmondson, P, Armstrong, D

    Published 2013
    “…The samples were implanted with 3000appm concentration of helium. All samples show a substantial increase in hardness of up to 107% in the case of pure W. …”
    Journal article
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    Low Temperature Physics by Kolm, H. H.

    Published 2010
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    Technical Report