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| Query : 2014MNRAS.442..138S |
2014MNRAS.442..138S - Mon. Not. R. Astron. Soc., 442, 138-141 (2014/July-3)
Radiative lifetime measurements of some La I and La II levels by time-resolved laser spectroscopy.
SHANG X., TIAN Y., WANG Q., FAN S., BAI W. and DAI Z.
Abstract (from CDS):
Natural radiative lifetimes for 60 excited levels of La I and La II were measured using time-resolved laser-induced fluorescence spectroscopy in laser-induced plasma. The lifetimes of 40 excited levels of La I, in the energy range from 24 507.87 to 52 030.4/cm, and 20 levels of La II, from 26 414.01 to 56 035.70/cm, were measured in this work. The results of lifetimes range from 4.2 to 330 ns with the uncertainties within 10 percent. To our best knowledge, 34 lifetimes of La I and 17 lifetimes of La II are reported for the first time.
Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)
Journal keyword(s): atomic data - atomic processes - methods: laboratory: atomic - techniques spectroscopic
Simbad objects: 7
| Number of rows : 7 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * 63 Tau | SB* | 04 23 25.0640719200 | +16 46 38.150834016 | 5.957 | 5.625 | 7.04 | 5.33 | kA4VmF2/5IIIp | 304 | 0 | |
| 2 | * tau UMa | SB* | 09 10 55.0419835680 | +63 30 49.216366332 | 5.008 | 4.640 | F6IIIn | 237 | 1 | |||
| 3 | V* V816 Cen | dS* | 11 37 37.0409608152 | -46 42 34.877876832 | 8.99 | 8.79 | 8.03 | F8/G0p | 332 | 0 | ||
| 4 | * bet CrB | a2* | 15 27 49.7540595700 | +29 06 20.494640434 | 4.08 | 3.97 | 3.68 | 3.50 | 3.45 | F2VpSrCrEuSi | 703 | 0 |
| 5 | V* V1291 Aql | a2* | 19 53 18.7357174440 | -03 06 52.063556976 | 5.837 | 5.619 | F0VpSrCrEu | 285 | 0 | |||
| 6 | * gam Equ | a2* | 21 10 20.5000721160 | +10 07 53.691967776 | 5.03 | 4.94 | 4.68 | 4.43 | 4.32 | A9VpSrCrEu | 564 | 0 |
| 7 | * 32 Aqr | SB* | 22 04 47.4224193480 | -00 54 22.839762708 | 5.519 | 5.271 | A5IV | 185 | 0 |
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