scholarly journals Measurements of branching fractions, absolute transition probabilities and J-file sum rule for the 4p55p→4p55s transitions array in neutral krypton

Laser Physics ◽  
2020 ◽  
Vol 30 (5) ◽  
pp. 055701 ◽  
Author(s):  
Haroon Asghar ◽  
Naveed K. Piracha ◽  
Raheel Ali ◽  
M Aslam Baig
Keyword(s):  
Transition Probabilities ◽  
Branching Fractions ◽  
Sum Rule ◽  
Absolute Transition

scholarly journals Experimental transition probabilities for 4p – 4d spectral lines in V II

2019 ◽  
Vol 622 ◽  
pp. A154 ◽  
Author(s):  
H. Nilsson ◽  
J. Andersson ◽  
L. Engström ◽  
H. Lundberg ◽  
H. Hartman
Keyword(s):  
Transition Probabilities ◽  
Branching Fractions ◽  
Theoretical Data ◽  
Spectral Lines ◽  
Time Resolved ◽  
Excitation Scheme ◽  
Photon Excitation ◽  
Experimental Transition ◽  
Experimental Values ◽  
Absolute Transition

Aims. We aim to measure lifetimes of levels belonging to the 3d3(4F)4d subconfiguration in V II, and derive absolute transition probabilities by combining the lifetimes with experimental branching fractions.Methods. The lifetimes were measured using time-resolved laser-induced fluorescence in a two-photon excitation scheme. The branching fractions were measured in intensity calibrated spectra from a hollow cathode discharge lamp, recorded with a Fourier transform spectrometer.Results. We report lifetimes for 13 levels at an energy around 73 000 cm−1. Absolute transition probabilities of 78 lines are derived by combining the lifetimes and branching fractions. The experimental values are compared with theoretical data from the literature.

scholarly journals Experimental and theoretical lifetimes and transition probabilities for spectral lines in Nb II

2019 ◽  
Vol 627 ◽  
pp. A102
Author(s):  
H. Nilsson ◽  
L. Engström ◽  
H. Lundberg ◽  
H. Hartman ◽  
P. Palmeri ◽  
...  
Keyword(s):  
Transition Probabilities ◽  
Branching Fractions ◽  
Spectral Lines ◽  
Fourier Transform Spectrometer ◽  
Core Polarization ◽  
Time Resolved ◽  
Excitation Scheme ◽  
Hartree Fock ◽  
Two Photon ◽  
Absolute Transition

Aims. We have measured and calculated lifetimes of high lying levels in Nb II, and derived absolute transition probabilities by combining the lifetimes with experimental branching fractions.Methods. The lifetimes were measured using time-resolved laser-induced fluorescence in a two-photon and two-step excitation scheme. The branching fractions were measured in intensity calibrated spectra from a hollow cathode discharge, recorded with a Fourier transform spectrometer. The calculations were performed with the relativistic Hartree–Fock method including core polarization.Results. We report experimental lifetimes of 13 levels in the 4d3(4F)5d and 4d3(4F)6s subconfigurations, at an energy around 70 000 cm−1. By combining the lifetimes with experimental branching fractions absolute transition probabilities of 59 lines are derived. The experimental results are compared with calculated values.

Absolute transition probabilities of Cu II lines

1994 ◽  
Vol 52 (1) ◽  
pp. 111-114 ◽  
Author(s):  
J.R. Crespo López-Urrutia ◽  
B. Kenner ◽  
T. Neger ◽  
H. Jäger
Keyword(s):  
Transition Probabilities ◽  
Absolute Transition

Absolute Transition Probabilities in the Odd-Odd NucleusPr144

1962 ◽  
Vol 128 (1) ◽  
pp. 325-332 ◽  
Author(s):  
J. Burde ◽  
M. Rakavy ◽  
G. Engler
Keyword(s):  
Transition Probabilities ◽  
Absolute Transition

Absolute transition probabilities inSm151

1977 ◽  
Vol 15 (6) ◽  
pp. 2187-2194 ◽  
Author(s):  
J. Burde ◽  
A. Ginzburg ◽  
A. Molchadzki
Keyword(s):  
Transition Probabilities ◽  
Absolute Transition

scholarly journals STATUS OF THE HADRONIC τ DETERMINATION OF Vus

2008 ◽  
Vol 23 (21) ◽  
pp. 3191-3195 ◽  
Author(s):  
K. MALTMAN ◽  
C. E. WOLFE ◽  
S. BANERJEE ◽  
M. RONEY ◽  
I. NUGENT
Keyword(s):  
Sum Rules ◽  
Branching Fractions ◽  
Sum Rule ◽  
Slow Convergence ◽  
Decay Data ◽  
Decay Modes ◽  
Good Agreement

We update the extraction of Vus from hadronic τ decay data in light of recent BaBar and Belle results on the branching fractions of a number of important strange decay modes. A range of sum rule analyses is employed, particular attention being paid to those based on “non-spectral weights”, developed previously to bring the slow convergence of the relevant integrated D = 2 OPE series under improved control. Results from the various sum rules are in good agreement with one another, but ~ 3σ below expectations based on 3-family unitarity.

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