Oscillator Strengths of the Resonance Lines of Krypton and Xenon*

Griffin, P. M.; Hutcherson, J. W.

doi:10.1364/josa.59.001607

Cited by 41 publications

(7 citation statements)

References 14 publications

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“…For three of the sight lines in which Kr is observed, the abundance was derived from two separate transitions with both yielding self-consistent results. Also, experimental oscillator strengths for both transitions are available from two separate sources (20,21) and are in very good agreement.…”

Section: Condensation Temperature (K)mentioning

confidence: 69%

The Abundance of Heavy Elements in Interstellar Gas

Cardelli

1994

Science

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The Goddard high-resolution spectrograph aboard the Hubble Space Telescope has been used to produce interstellar abundance measures of gallium, germanium, arsenic, krypton, tin, thallium, and lead, the heaviest elements detected in interstellar gas. These heavy elements arise from stellar nuclear processes (slow- and rapid-process neutron capture) that are different from those that produce zinc and the lighter elements previously observed. These data allow investigators to study how the heavy elements chemically interact with interstellar dust and to compare interstellar heavy element abundances in the current galactic epoch to those present at the time of the formation of the solar system. For example, the data indicate that the abundance of atoms in interstellar dust cannot be explained by simple condensation models alone and must be heavily influenced by chemistry in the interstellar medium. Also, the data for some elements suggest that their true galactic cosmic abundances may be different from the "fossil" abundances incorporated into the solar system 4.6 billion years ago.

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Section: Condensation Temperature (K)mentioning

confidence: 69%

The Abundance of Heavy Elements in Interstellar Gas

Cardelli

1994

Science

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“…Reference [54] 0.19 Aymar et al [55] 0.215 0.185 Aymar et al [52] 0.176 0.193 Aymar [108] 0.202 0.191 Kim [109] 0.208±15% Gruzdev [56] 0.20 Geiger [39] 0.25 Molino et al [110] 0.18±0.01 Gibson et al [111] 0.1775±0.0050 Ligtenberg et al [32] 0.1751±0.0049 Chan et al [33] 0.214±0.011 Takayanagi et al [34] 0.143±0.015 Tsurubuchi et al [36] 0.155±0.011 Hahn et al [38] 0.235±0.019 Geiger [39] 0.195±0.039 Matthias et al [40] 0.208±0.006 Delage et al [112] 0.170±0.006 Geiger [42] 0.173±0.035 Griffin et al [43] 0.187±0.006 Vaughan [44] 0.204±0.02 Chashchina et al [45] 0.21±0.05 Lewis [46] 0.204±0.010 D 1 -3 P 2 , 3 D 1 -3 P 1 , 3 D 1 -3 P 0 , 3 D 1 -1 P 1 , 3 D 2 -3 P 2 , 3 D 2 -3 P 1 , 3 D 2 -1 P 1 , 3 S 1 -3 P 2 , 3 S 1 -3 P 0 and 3 S 1 -1 P 1 ), our theoretical values of the transitions rates for seven hundred fifty seven allowed transitions are reported here for the first time.…”

Section: Experimental Theoreticalmentioning

confidence: 99%

“…The oscillator strengths for many levels of neutral krypton atom suffering from short coming and low comprehensive. Different experimental techniques [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] and theoretical procedures [39,[50][51][52][53][54][55][56][57][58] are carried out in order to measure or calculate the oscillator strength in neutral krypton atoms.…”

Section: Introductionmentioning

confidence: 99%

“…However, we do not have an idea about the range of scattering angles at which this relationship is valid. The second experimental method is total absorption [43,47] for transition to low lying resonance states in krypton. However, this method is not widely applicable due to the obvious usage of the extreme edges of the absorption line, provided that the resolution of the obtained spectra is rather low.…”

Section: Introductionmentioning

confidence: 99%

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Extensive and accurate relativistic calculations of atomic data on the⁸³Kr I spectrum

Salah

Hassouneh

2018

J. Phys. Commun.

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In our recent paper (2018 J. Phys. Commun. 2 035014) A series of errors in table 1 and 7 were discovered once the paper was published. The corrections to these errors are as follows: Uncertainties given for the computed quantities in Tables 1 and 7 are incorrect, these quantities correspond to the relative errors in the computed values. Therefore the±signs should be deleted and all the quantities on the right side of the±signs refer to the relative errors, moreover, e −x denotes 10 −x . These Tables become OPEN ACCESS RECEIVED AbstractWe provide an extensive, accurate and complete new spectroscopic data set for many levels belonging to the intermediate perturbing Rydberg series ns[K] J (5n8), nd[K] J (4n7) and the autoionizing Rydberg series np[K] J (5n7) and nf[K] J (4n5) relative to the ground state 4p 6 1 S 0 for neutral krypton-83 isotope. The data set is composed of the energy levels, the oscillator strengths f , ij the radiative transition rates A , ij the Landé g-factors, the magnetic dipole and electric quadrupole hyperfine constants. The values of these spectroscopic parameters are calculated in the multiconfiguration Dirac-Hartree-Fock (MCDHF) framework. The calculations are carried out in the active space where the electron correlation effects, contributions from relativistic configuration interaction (RCI), the quantum electrodynamics (QED) effects with transverse photon Breit interaction and vacuum photon polarization, specific mass shift and self-energy corrections are included. In addition, we provide the oscillator strengths and transition rates in Coulomb and Babushkin gauges for the 4p 5 ( 2 P)4d-4p 5 ( 2 P)5p, 4p 5 ( 2 P)5s-4p 5 ( 2 P)5p, 4p 5 ( 2 P)6s-4p 5 ( 2 P)5p, 4p 5 ( 2 P)4d-4p 5 ( 2 P)44f, 4p 5 ( 2 P)5d-4p 5 ( 2 P)4f, 4p 5 ( 2 P)5d-4p 5 ( 2 P)6p, 4p 5 ( 2 P)7s-4p 5 ( 2 P)6p, 4p 5 ( 2 P)4d-4p 5 ( 2 P)5f, 4p 5 ( 2 P)5d-4p 5 ( 2 P)5f, 4p 5 ( 2 P)6d-4p 5 ( 2 P)5f, 4p 5 ( 2 P)7p-4p 5 ( 2 P)6d and 4p 5 ( 2 P)8s-4p 5 ( 2 P)7p transition arrays. Extensive comparisons with other experimental and theoretical data from the reference databases are carried out in order to judge the reliability of our data. These comparisons indicate that our results are accurate. The present spectroscopic data may be useful for line identification in observed spectra as well as modelling and diagnostics of astrophysical and fusion plasmas. å å w d z z z z z z then the Landé g-factor g J can be written by means of Wigner-Eckart theorem [83] as g J J J J 1 2 1 48 ) and this leads to a correction to Landé g-factor g J by an amount g J J J J 0.001 160 1 51 J q 4.2. The procedure for calculating the radial matrix elements The relativistic eigenfunction for a state denoted in Dirac notation by JM J J G P ñ | can be expanded in jj-coupled configuration state functions, which are eigenfunctions of J , 2 J z and the parity operator Π in the MCDHF as JM C JM 52 J J r r J J Here, the summation is carried out over all electrons of the atom. The electric quadrupole hyperfine constant becomes B eQ J J J J J J T J

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“…For helium we take the result of Anderson and Weinhold [ 121, obtained using accurate Hylleraas-type trial vectors of some 135 terms. For krypton we give the experimental result of Griffin and Hutcherson [13].…”

Section: Illustrative Calculationsmentioning

confidence: 99%