جهت دسترسی به کاربرگه ی زیر، از این لینک استفاده کنید. http://dl.pgu.ac.ir/handle/Hannan/82057
Title: EXPERIMENTALLY MEASURED RADIATIVE LIFETIMES AND OSCILLATOR STRENGTHS IN NEUTRAL VANADIUM
Keywords: Science & Technology;Physical Sciences;Astronomy & Astrophysics;atomic data;stars: abundances;Sun: abundances;V I;HYPERFINE-STRUCTURE;TRANSITION-PROBABILITIES;VACUUM-ULTRAVIOLET;FE I;ABUNDANCE;SPECTROMETER;SPECTRUM;STARS;LINES;Science & Technology;Physical Sciences;Astronomy & Astrophysics;atomic data;stars: abundances;Sun: abundances;V I;HYPERFINE-STRUCTURE;TRANSITION-PROBABILITIES;VACUUM-ULTRAVIOLET;FE I;ABUNDANCE;SPECTROMETER;SPECTRUM;STARS;LINES;Astronomy & Astrophysics;0201 Astronomical And Space Sciences;0305 Organic Chemistry;0306 Physical Chemistry (Incl. Structural)
Issue Date: 3-Oct-2016
14-Jun-2016
24-Mar-2016
Publisher: American Astronomical Society
place: Science and Technology Facilities Council (STFC);Science and Technology Facilities Council (STFC)
Description: We report a new study of the V i atom using a combination of time-resolved laser-induced fluorescence and Fourier transform spectroscopy that contains newly measured radiative lifetimes for 25 levels between 24,648 cm−1 and 37,518 cm−1 and oscillator strengths for 208 lines between 3040 and 20000 Å from 39 upper energy levels. Thirteen of these oscillator strengths have not been reported previously. This work was conducted independently of the recent studies of neutral vanadium lifetimes and oscillator strengths carried out by Den Hartog et al. and Lawler et al., and thus serves as a means to verify those measurements. Where our data overlap with their data, we generally find extremely good agreement in both level lifetimes and oscillator strengths. However, we also find evidence that Lawler et al. have systematically underestimated oscillator strengths for lines in the region of 9000 ± 100 Å. We suggest a correction of 0.18 ± 0.03 dex for these values to bring them into agreement with our results and those of Whaling et al. We also report new measurements of hyperfine structure splitting factors for three odd levels of V i lying between 24,700 and 28,400 cm−1.
URI: https://dx.doi.org/10.3847/0067-0049/224/2/35
Other Identifiers: 1538-4365
http://hdl.handle.net/10044/1/41012
ST/I001034/1
ST/K001051/1
Type Of Material: Other
Appears in Collections:Physics

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