2014A&A...570A..34E


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST07:26:44

2014A&A...570A..34E - Astronomy and Astrophysics, volume 570A, 34-34 (2014/10-1)

The FERRUM project: Experimental transition probabilities from highly excited even 5s levels in Cr II.

ENGSTROEM L., LUNDBERG H., NILSSON H., HARTMAN H. and BAECKSTROEM E.

Abstract (from CDS):

We report lifetime measurements of the five levels in the 3d4(a5D)5s e6D term in CrII at an energy around 83000/cm, and log(gf) values for 38 transitions from the investigated levels. The lifetimes are obtained using time-resolved, laser-induced fluorescence on ions from a laser-produced plasma. Since the levels have the same parity as the low-lying states directly populated in the plasma, we used a two-photon excitation scheme. This process is greatly facilitated by the presence of the 3d4(a5D)4p z6F levels at roughly half the energy difference. The f-values are obtained by combining the experimental lifetimes with branching fractions derived using relative intensities from a hollow cathode lamp recorded with a Fourier transform spectrometer.

Abstract Copyright:

Journal keyword(s): atomic data - methods: laboratory: atomic - techniques: spectroscopic

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 84937 PM* 09 48 56.09801 +13 44 39.3237 8.49 8.68 8.32 7.97 7.70 F8Vm-5 717 0
2 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3999 3

    Equat.    Gal    SGal    Ecl

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2020.07.13-07:26:44

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