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- Nilsson, H (author)
The FERRUM project: new experimental and theoretical f-values for 4p-4d transitions in FeII applied to HST spectra of chi Lupi
- Article/chapterEnglish2000
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- 2000
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- LIBRIS-ID:oai:lup.lub.lu.se:2018179e-c52d-432c-bb83-18aeb6a5512e
- https://lup.lub.lu.se/record/2259068URI
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- Radiative lifetimes for six highly excited levels in Fe II have been measured at Lund Laser Centre applying the laser induced fluorescence technique and two-step excitation. The energy levels belong to the even-parity 3d(6)(D-5)(4)d subconfiguration at about 10 eV. Branching fractions (BF:s) of 29 transitions from these levels to the 3d(6)(D-5)4p subconfiguration at about 5 eV have been measured in the wavelength region 2000-3000 Angstrom with the Lund Fourier Transform Spectrometer. By normalizing the BF:s with the lifetimes we get experimental oscillator strengths for these 29 4p-4d lines. The oscillator strengths are compared with new theoretical calculations using the orthogonal operator technique and applied to high-resolution spectra of the star chi Lupi, recorded with the Hubble Space Telescope.
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- Sikstrom, C. M (author)
- Li, Z. S (author)
- Lundberg, HansLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-hlu (author)
- Raassen, A. J. J (author)
- Johansson, S (author)
- Leckrone, D. S (author)
- Svanberg, SuneLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-ssv (author)
- AtomfysikFysiska institutionen (creator_code:org_t)
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- In:Astronomy & Astrophysics362:1, s. 410-4180004-6361
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