High-resolution in-source laser spectroscopy in perpendicular geometry

Heinke, Reinhard; Kron, T.; Raeder, S.; Reich, Tobias; Schönberg, Pascal; Trümper, M.; Weichhold, C.; Wendt, Κ.

doi:10.1007/s10751-016-1386-2

Cited by 29 publications

(18 citation statements)

References 19 publications

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“…When the ion beam is overlapped with laser light in an (anti)collinear geometry [1,2], resonance profiles with less than 100 MHz width can be obtained, reaching the order of magnitude of the natural linewidth. Currently, there are several new methods under development that aim to combine the high-efficiency resonance laser ionization process with high resolution [8,24,25].…”

Section: Introductionmentioning

confidence: 99%

Precision measurements of the charge radii of potassium isotopes

et al. 2019

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Precision nuclear charge radii measurements in the light-mass region are essential for understanding the evolution of nuclear structure, but their measurement represents a great challenge for experimental techniques. At the Collinear Resonance Ionization Spectroscopy (CRIS) setup at ISOLDE-CERN, a laser frequency calibration and monitoring system was installed and commissioned through the hyperfine spectra measurement of 38-47 K. It allowed for the extraction of the hyperfine parameters and isotope shifts with better than 1 MHz precision. These results are in excellent agreement with available literature values and they demonstrate the suitability of the CRIS technique for the study of nuclear observables in light atomic systems. In addition, the spectral line shapes obtained under different conditions were systematically investigated, highlighting the importance of finding optimal conditions, under which the extracted nuclear properties remain unaffected by laser-atom interactions.

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Section: Introductionmentioning

confidence: 99%

Precision measurements of the charge radii of potassium isotopes

et al. 2019

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“…In the case of 144 Pm, the magnetic dipole moment was determined from the temperature dependence of low tempera-ture nuclear orientation measured via anisotropy of the γradiation of oriented 144 Pm nuclei [40]. If we re-evaluate their experimental result using the same value for r −3 as was used in [12], we obtain |μ lit I |( 144 Pm) = 1.71 (14) μ N (assuming an unchanged uncertainty), which approaches the result from our work, but still lies outside its uncertainty. One might consider a hyperfine anomaly i Δ j in this case, which specifies a relative deviation from Eq.…”

Section: Nuclear Momentsmentioning

confidence: 99%

“…In the reference, data from K X-ray shifts, elastic electron scattering, muonic atoms and optical isotope shifts is evaluated for the extraction of root mean square charge radii. However, the listed changes in rms charge radii δ r 2 A,A (14) only take optical isotope shifts into account. The following analysis is based on the latter.…”

Section: Isotope Shiftsmentioning

confidence: 99%

“…In contrast to many state-of-the-art spectroscopy experiments based on collinear laser spectroscopy of fast atom-or ion beams, we performed in-source spectroscopy directly in the atomic beam effusing from a hot atom source. This concept is implemented in the PI-LIST (perpendicularly illuminated laser ion source and trap), which presents a complementary technique to collinear laser spectroscopy and has undergone various performance tests on stable and radioactive species lately [14].…”

Section: Introductionmentioning

confidence: 99%

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High-resolution laser resonance ionization spectroscopy of $$^{143-147}$$Pm

et al. 2020

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We present the results of high-resolution laser spectroscopy of the long-lived radioactive isotopes 143−147 Pm. The hyperfine structures and isotope shifts in two different atomic ground-state transitions at 452 nm and 468 nm were probed by in-source laser spectroscopy at the RISIKO mass separator in Mainz, using the PI-LIST ion source. From the hyperfine coupling constants the nuclear magnetic dipole and electric quadrupole moments for 143−147 Pm were derived, and the measured isotope shifts allowed the extraction of changes in nuclear mean square charge radii.

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“…First, the neutron-deficient isotopes 212−215 Ac were investigated using both on-line in-gas-cell (i.e., 212−215 Ac) and in-gas-jet (i.e., 214,215 Ac) laser spectroscopy at the LISOL facility in Louvainla-Neuve, Belgium [27,30]. Second, the neutron-rich isotopes 225,227 Ac were studied using off-line perpendicular highresolution laser spectroscopy at the Johannes Gutenberg University in Mainz, Germany [28,33]. Finally, the neutron-rich isotopes 225−229 Ac were measured at TRIUMF in Vancouver, Canada, using an ISAC on-line UC x target after irradiation to perform in-source resonance ionization spectroscopy.…”

Section: Experimental Set-upmentioning

confidence: 99%