Collinear laser spectroscopy of 
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: Solving the field-shift puzzle of the 
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Müller, Patrick; König, Kristian; Imgram, Phillip; Krämer, Jörg; Nörtershäuser, W.

doi:10.1103/physrevresearch.2.043351

Cited by 19 publications

(10 citation statements)

References 70 publications

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“…The first prototype was implemented at TRIGA-LASER [9] for offline measurements on stable calcium isotopes [10]. A revised version is already in use at the COALA-experiment in Darmstadt [11] and served well for laser-induced high-voltage measurements with calcium [12,13], indium [11], and isotope shift measurements on barium [14]. Two more systems were built.…”

Section: Introductionmentioning

confidence: 99%

A $4π$ Fluorescence Detection Region for Collinear Laser Spectroscopy

Maaß,

König,

Krämer

et al. 2020

Preprint

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We report on a novel detection system for collinear laser spectroscopy which provides an almost 4π solid angle for fluorescence photon detection by employing curved surface mirrors. Additional parabolic angular filters offer passive stray light suppression and can be configured to match the experimental conditions. The mirror surfaces have an excellent reflectivity over a broad band of wavelengths in the optical spectrum and can be substituted to expand the wavelength acceptance range even further. Experiments with this system were performed at two collinear laser spectroscopy setups, including the laser spectroscopic investigation of 36 Ca using rates of 25 /s at NSCL, MSU. K: Optics, Photon detectors for UV, visible and IR photons (vacuum), Lasers 1Corresponding author.

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Section: Introductionmentioning

confidence: 99%

A $4π$ Fluorescence Detection Region for Collinear Laser Spectroscopy

Maaß,

König,

Krämer

et al. 2020

Preprint

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“…As demonstrated in [28,29] it is generally possible to reduce the systematic uncertainty to 100 kHz at COALA. However, the energy distribution of the ion beam used in those measurements was below 100 meV compared to the TABLE I. Rest-frame transition frequencies and hyperfine parameters A and B of the 5s 2 1 S0 → 5s5p 3 P1 transition in 115 In + .…”

Section: Resultsmentioning

confidence: 99%

Transition Frequencies and Hyperfine Structure in $^{113,115}$In$^+$: Application of a Liquid-Metal Ion Source for Collinear Laser Spectroscopy

König,

Krämer,

Imgram

et al. 2020

Preprint

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We demonstrate the first application of a liquid-metal ion source for collinear laser spectroscopy in proof-of-principle measurements on naturally abundant In + . The superior beam quality, i.e., the actively stabilized current and energy of a beam with very low transverse emittance, allowed us to perform precision spectroscopy on the 5s 2 1 S0 → 5s5p 3 P1 intercombination transition in 115 In + , which is to our knowledge the slowest transition measured with collinear fluorescence laser spectroscopy so far. By applying collinear and anticollinear spectroscopy, we improved the center-ofgravity frequency νcg = 1 299 617 759. 3 (1.2) and the hyperfine constants A = 6957.19 (28) MHz and B = −443.7 (2.4) MHz by more than two orders of magnitude. A similar accuracy was reached for 113 In + in combination with literature data and the isotope shift between both naturally abundant isotopes was deduced to ν( 113 In) − ν( 115In) = 696.3 (3.1) MHz. Nuclear alignment induced by optical pumping in a preparation section of the ion beamline was demonstrated as a pump-andprobe approach to provide sharp features on top of the Doppler broadened resonance profile.

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“…In particular, collinear fluorescence and resonance-ionization spectroscopy experiments at on-line facilities can strongly benefit from the presented method. Due to the low production rates of exotic isotopes, beam-energy independent measurements via collinear and anticollinear spectroscopy directly on these isotopes are generally not feasible due to the limited measurement time, in contrast to off-line facilities where tremendous accuracy has been demonstrated with that technique [20,21]. The procedure described here, however, can be realized with an off-line beam in preparation of the on-line experiment and then allows for in situ beam-energy measurements during the on-line runs.…”

Section: Introductionmentioning

confidence: 99%

Kinetic-beam-energy determination via collinear laser spectroscopy

König,

Minamisono,

Lantis

et al. 2021

Preprint

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An approach to determine the kinetic beam energy at the 10 −5 level is presented, which corresponds to an improvement by more than one order of magnitude compared to conventional methods. Particularly, collinear fluorescence and resonance ionization spectroscopy measurements on rare isotope beams, where the beam energy is a major contribution to the uncertainty, can benefit from this method. The approach is based on collinear spectroscopy and requires no special equipment besides a wavelength meter, which is commonly available. Its advent is demonstrated in a proof-of-principle experiment on a Ni beam. In preparation for the energy measurement, the rest-frame transition frequencies of the 3d 9 4s 3 D3 → 3d 9 4p 3 P2 transitions in neutral nickel isotopes have been identified to be ν0( 58 Ni) = 850 343 678 (20) MHz and ν0( 60 Ni) = 850 344 183 (20) MHz.

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Collinear laser spectroscopy of Ca+ : Solving the field-shift puzzle of the 4sS1/22<

Cited by 19 publications

References 70 publications

A $4π$ Fluorescence Detection Region for Collinear Laser Spectroscopy

A $4π$ Fluorescence Detection Region for Collinear Laser Spectroscopy

Transition Frequencies and Hyperfine Structure in $^{113,115}$In$^+$: Application of a Liquid-Metal Ion Source for Collinear Laser Spectroscopy

Kinetic-beam-energy determination via collinear laser spectroscopy

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