Zirconium isotope shift measurements using optogalvanic detection

Langlois, Étienne V; Gagné, Jean

doi:10.1364/josab.10.000774

Cited by 15 publications

(12 citation statements)

References 13 publications

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“…Measurements of such shifts have also previously been used to demonstrate whether isotope separation by laser-photoionization is feasible [2,3]. Many atomic systems have been studied to provide data for both laser-photoionization schemes and nuclear structure [4] and of these the case of zirconium, particularly the stable odd 91 Zr isotope, has attracted great interest [2,3,[5][6][7][8][9][10][11][12][13][14]. The shape and size of the 91 Zr nucleus is a special case in the study of odd-even effects on nuclear charge radii because of its magic neutron closed-shell +1 configuration [8].…”

Section: Introductionmentioning

confidence: 99%

The isotope shift of by collinear ion - laser beam spectroscopy

Campbell¹,

Billowes²,

Grant³

1997

J. Phys. B: At. Mol. Opt. Phys.

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Isotope shifts have been measured for 90,91,92,94,96 Zr isotopes on the ionic 4d 2 5s 4 F 3/2 -4d 2 5p 4 D 1/2 (312.7 nm) and 4d 2 5s 4 F 3/2 -4d 2 5p 4 D 3/2 (310.0 nm) lines by fast collinear ion-laser beam spectroscopy. The inconsistent reports of the 90,91 Zr isotope shifts are considered and a complete set of compatible optical and non-optical charge-radii measurements are derived. Simple macroscopic descriptions totally fail to explain the rapidly changing course of the nuclear shape and size.

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Section: Introductionmentioning

confidence: 99%

The isotope shift of by collinear ion - laser beam spectroscopy

Campbell¹,

Billowes²,

Grant³

1997

J. Phys. B: At. Mol. Opt. Phys.

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“…Table 1 lists the isotope shifts for 27 zirconium 4d 2 5s 2 -4d 2 5s5p transitions studied in this work, along with the results of previous work [6][7][8][9]. The data represent the mean of typically 20-30 spectra per transition and the quoted uncertainties (about ±1 MHz) include contributions from the statistical uncertainty of the measurements (±2σ ) and the small uncertainty in the frequency calibration.…”

Section: Methodsmentioning

confidence: 96%

Isotope shift studies in Zr I by Doppler-free saturated absorption spectroscopy and pseudo-relativistic Hartree-Fock calculations: II. Transitions 4d25s2-4d25s5p

Bouazza¹,

Gough

Hannaford

et al. 2002

J. Phys. B: At. Mol. Opt. Phys.

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High-resolution Doppler-free saturated absorption spectroscopy has been employed to determine accurate (about ±1 MHz) isotope shifts for twenty-seven 4d25s2-4d25s5p transitions of Zr I in the green, blue and yellow-red spectral regions. These transitions, which involve an electron jump 5s→5p, represent a class in which the field shift (FS) component is larger than the specific mass shift (SMS). The SMSs and FSs were separated using a King plot procedure, in which the SMS of the 468.78 nm reference transition was estimated from scaled ab initio calculations. The SMSs for these transitions are found to lie between zero and about three times the normal mass shifts. Using refined multiconfigurational fine-structure calculations and scaled pseudo-relativistic Hartree-Fock estimates, FSs and SMSs have been computed and found to be in broad agreement with the experimentally determined values. A detailed comparison of the calculated FSs and SMSs with the accurate experimental values for this large sample of zirconium transitions is found to provide stringent tests of the Vinti integral and electron density values calculated from the radial wavefunctions and also of the admixture coefficients of the eigenvector components determined from the multiconfigurational fine-structure calculations. Finally, the results of this work have been used to predict the SMS and FS values for 20 relevant even- and odd-parity Zr I configurations.

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“…In this method, for achieving high selectivity, it is necessary to avoid a situation where the targeted isotope has an overlapping absorption spectrum with undesired isotope. If this is inevitable [16][17][18], and the isotope shifts are small [19], then the latter one is highly suitable for selective photoionization. Isotope-selective photoionization based on atomic alignment using polarized lasers has been applied to Pt group metals [20], ytterbium [12,21], tin [22], zirconium [14,23], gadolinium [13,15,24].…”

Section: Introductionmentioning

confidence: 99%

Effect of magnetic field on isotope-selective photoionization of atomic samarium using polarized lasers

et al. 2017

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The effect of an external magnetic field on the isotopic selectivity in a two-color three-step polarization-based isotope-selective photoionization of atomic samarium has been studied. Isotopeselective photoionization of samarium is realized through a level scheme having total angular momentum (J) sequence 0-1-1-continuum by using two lasers linearly polarized in the same direction and the isotopic selectivity is measured by varying the magnetic field strength perpendicular to the laser polarization axis while keeping the delay between the laser pulses fixed and vice versa. The experimental data have been analyzed and compared with the results of the numerical calculations. The magnetic field perpendicular to the laser polarization axis present in the laser-atom interaction region has been found to degrade the isotopic selectivity. Further, the Lande factor (g J ) of the excited energy level 16 690.76 cm −1 (J=1) of samarium has been determined from the observed oscillation in the isotopic selectivity. The value of g , J thus obtained, is in good agreement with that reported in the literature.

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Zirconium isotope shift measurements using optogalvanic detection

Cited by 15 publications

References 13 publications

The isotope shift of by collinear ion - laser beam spectroscopy

The isotope shift of by collinear ion - laser beam spectroscopy

Isotope shift studies in Zr I by Doppler-free saturated absorption spectroscopy and pseudo-relativistic Hartree-Fock calculations: II. Transitions 4d25s2-4d25s5p

Effect of magnetic field on isotope-selective photoionization of atomic samarium using polarized lasers

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