Determination of the first ionization potential of actinide elements by resonance ionization mass spectroscopy

Köhler, Stefan; Deiβenberger, R.; Eberhardt, Κ.; Erdmann, N.; Herrmann, G.; Huber, G.; Kratz, Jens Volker; Nunnemann, M.; Passler, G.; Rao, P. Mohan; Riegel, J.; Trautmann, Ν.; Wendt, Κ.

doi:10.1016/s0584-8547(96)01670-9

Cited by 73 publications

(41 citation statements)

References 27 publications

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“…We have obtained the value 42698.86 cm −1 (5.29 eV) for the first ionization energy of Ac I . In literature, the values of first ionization energy are given as 45730 cm −1 [9], 45849 cm −1 [10], 41700 cm −1 (5.17 eV [16], it can be also found in [2] and [23]), and 5.31 eV [11]. Our result is in very good agreement especially with [9] and [11].…”

Section: Resultssupporting

confidence: 87%

“…The binding energies for actinides were given using Hartree-Fock (HFR) method by Rajnak [9]. Köhler et al reported the first ionization potentials of some actinides elements by resonance ionization mass spectroscopy [10]. Transition energies of lanthanum, actinium, and eka-actinium were obtained by the relativistic coupled cluster method by Eliav et al [11].…”

Section: Introductionmentioning

confidence: 99%

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Electric Dipole Transition Parameters for Low-Lying Levels for Neutral Actinium

Özdemir

Ürer

2010

Acta Phys. Pol. A

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We have calculated the energies of some low-lying levels (6d7s 2 , 6d 2 7s, 6d7s7p and 6d 2 7p) and electric dipole transition parameters (wavelengths, oscillator strengths and transition probabilities) between them for neutral actinium (Z = 89). In the calculations, the correlation and relativistic effects are considered by multiconfiguration Hartree-Fock method within the framework Breit-Pauli Hamiltonian. The results obtained are compared with the available experimental and theoretical works in the literature.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Electric Dipole Transition Parameters for Low-Lying Levels for Neutral Actinium

Özdemir

Ürer

2010

Acta Phys. Pol. A

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“…In addition, the spectroscopic approach becomes more and more difficult along the sequence of actinide elements, which result from perturbations of the Rydberg series by the increasingly complex structure in heavy multielectron atoms associated to multiple open electron shells. Correspondingly, Köhler et al [12] and Erdmann et al [8] analyzed ionization thresholds in external electrical fields applying the saddle-point model by extrapolation of observed field-dependent ionization threshold values to zero field strength. This approach could be carried out experimentally with as few as 10 12 atoms and gave access to the artificially produced actinide elements as rare as einsteinium.…”

Section: Introductionmentioning

confidence: 99%

Determination of the first ionization potential of actinium

et al. 2012

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Using resonance ionization spectroscopy the first-ionization potential of actinium has been determined by analyzing different Rydberg series in two-color resonant laser excitation. Three individual Rydberg series were investigated, converging toward the ionic ground state and toward the first-and second-excited state of the actinium ion, respectively. A combined analysis of the convergence limits leads to a consistent value for the first-ionization potential of Ac of 43 394.45 (19) cm −1 , equivalent to 5.380 226 (24) eV.

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“…The method applied for the determination of ionization potentials is based on the determination of the photoionization thresholds in the presence of an external electric field [69]. The observed ionization threshold W th depends on the electric field strength as follows:…”

Section: Photoionization Threshold Methodsmentioning

confidence: 99%

Fast chemical separations and laser mass spectrometry – tools for nuclear research

Trautmann

Wendt

2012

Radiochimica Acta

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Fast chemical methods / Discontinuous and continuous separation procedures / Investigation of short-lived nuclei / Resonance ionization mass spectrometry (RIMS) / Ultra trace analysis of plutonium and neptunium / First ionization potentials of the actinides and technetiumSummary. Fast chemical separation procedures applied in nuclear research require dedicated experimental techniques. Rapid discontinuous separation procedures are illustrated by an example to isolate technetium from fission products. The use of a gas jet and its combination with a thermochromatographic separation and with the continuous solvent extraction technique SISAK is described and examples are given for the investigation of short-lived fission products. The potential of resonance ionization mass spectrometry (RIMS) as a highly sensitive technique using different experimental systems is outlined for ultra trace analysis of long-lived plutonium and neptunium isotopes, including isotope ratio measurements of the plutonium isotopes. In addition, the precise determination of the first ionization potentials (IP) of ten actinide elements up to einsteinium and of technetium carried out by using the photoionization threshold method and requiring sample sizes of ∼ 10 12 atoms is presented.

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Determination of the first ionization potential of actinide elements by resonance ionization mass spectroscopy

Cited by 73 publications

References 27 publications

Electric Dipole Transition Parameters for Low-Lying Levels for Neutral Actinium

Electric Dipole Transition Parameters for Low-Lying Levels for Neutral Actinium

Determination of the first ionization potential of actinium

Fast chemical separations and laser mass spectrometry – tools for nuclear research

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