Laser developments and resonance ionization spectroscopy at IGISOL

Reponen, M.; Moore, Iain; Keßler, T.; Pohjalainen, I.; Rothe, S.; Sonnenschein, Volker

doi:10.1007/978-94-007-5555-0_23

Cited by 2 publications

(4 citation statements)

References 28 publications

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“…On the other hand, the hfs study by Sonnenschein [15] has confirmed the J-values assigned by Meggers et al [9] to three other low-excited levels at 25,729 cm −1 (J = 1/2), 26,066 cm −1 (J = 3/2), and 24,969 cm −1 (J = 7/2). For the latter level, the J = 7/2 assigned by Meggers et al [9] is confirmed despite the fact that there is one line observed at 4003.79 Å (air wavelength; unclassified in the line list of Meggers et al [9]) whose wave number (24,969.28 cm −1 ) almost exactly coincides with this level's energy (24,969.294(17) cm −1 , according to the present analysis).…”

Section: Ac I 31 Revisions and Extensions Of Experimental Data On Ac Isupporting

confidence: 57%

“…One such mistake is a wrong J = 3/2 value assigned to the level at 22,801.11 cm −1 . This mistake was corrected by Ferrer et al [13] (see also Granados et al [14] and the earlier work of Sonnenschein [15]). These authors have analyzed the hyperfine structure (hfs) of the transition from this level to the ground level, which was observed by Meggers et al [9] near 4384.5 Å (air wavelength).…”

Section: Ac I 31 Revisions and Extensions Of Experimental Data On Ac Imentioning

confidence: 96%

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Update of Atomic Data for the First Three Spectra of Actinium

Kramida

2022

Atoms

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The present article describes a complete reanalysis of all published data on observed spectral lines and energy levels of the first three spectra of actinium (Ac I–III). In Ac I, three previously determined energy levels have been rejected, 12 new energy levels have been found; for six previously known levels, either the J values or the energies have been revised, and the ionization energy has been redetermined with an improved accuracy. In the line list of Ac I, three previous classifications have been discarded, 16 new ones have been found, and three have been revised. In Ac II, 16 new energy levels have been established, and 36 new identifications have been found for previously observed but unclassified lines. In both Ac I and Ac II, new sets of transition probabilities have been calculated. For all three spectra, complete datasets of critically evaluated energy levels, observed lines, and transition probabilities have been constructed to serve as recommended data on these spectra.

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Section: Ac I 31 Revisions and Extensions Of Experimental Data On Ac Isupporting

confidence: 57%

Section: Ac I 31 Revisions and Extensions Of Experimental Data On Ac Imentioning

confidence: 96%

Update of Atomic Data for the First Three Spectra of Actinium

Kramida

2022

Atoms

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“…Resonant laser ionization is used for efficient and selective ionization of exotic radionuclides from hot-cavity targets and gas filled stopping cells [7,20,27,[34][35][36]. The process of resonant laser ionization provides high efficiencies for a wide range of elements [21,36,41], limited by the availability of the required laser radiation for the first excitation transition.…”

Section: Resonant Laser Ionizationmentioning

confidence: 99%

“…The in-gas-cell laser ionization method has been applied online on radionuclides from accelerator-driven fusion or fission reactions at LISOL [8,22], TU Munich [23], GSI [24,25] and KISS, RIKEN [26] whereas off-line studies have been performed at Jyväskylä [27] and PALIS, RIKEN [28] . Because of the low gas-flow velocities within the gas cell of a few 3 m/s, a pulse repetition rate of 100-200 Hz is sufficient to efficiently excite and ionize the atoms.…”

Section: Introductionmentioning

confidence: 99%

Performance of Dye and Ti:sapphire laser systems for laser ionization and spectroscopy studies at S3

Raeder

Ferrer

Granados

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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The novel and sensitive In-Gas Laser Ionization Spectroscopy (IGLIS) technique enables high-precision laser spectroscopy of the heaviest elements and isotopes very far from stability that are produced in fusion-evaporation reactions at in-flight separators. Powerful and dedicated laser systems are required in these facilities to realize in-gas jet laser spectroscopy with optimal spectral resolution and efficiency. The performance with respect to the requirements for IGLIS studies at the low energy front-end of the Super Separator Spectrometer (S 3 ) at GANIL, France, of Dye and Ti:sapphire laser systems is investigated. In addition, a number of specific experimental cases on key isotopes of the elements Ag, Sn, Ac, and No are discussed in detail.

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Laser developments and resonance ionization spectroscopy at IGISOL

Cited by 2 publications

References 28 publications

Update of Atomic Data for the First Three Spectra of Actinium

Update of Atomic Data for the First Three Spectra of Actinium

Performance of Dye and Ti:sapphire laser systems for laser ionization and spectroscopy studies at S3

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