Laser spectroscopy of neutron deficient zirconium isotopes

Forest, D. H.; Billowes, J.; Campbell, P.; Dendooven, P.; Flanagan, Kieran; Griffith, J.A.R.; Huikari, J.; Jokinen, A.; Moore, R. F.; Nieminen, A.; Thayer, H.L.; Tungate, G.; Zemlyanoi, S. G.; Äystö, J.

doi:10.1088/0954-3899/28/12/101

Cited by 21 publications

(7 citation statements)

References 22 publications

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“…Prior to the current measurements, only tentative assignments of the spins of 87,87m,99,101 Zr had been made. As discussed by Campbell et al [11] and Forest et al [12], the fits to the hyperfine structure of these isotopes ruled out alternative spin assignments and confirmed the suggested assignments to be correct. The spins determined for the other odd isotopes are consistent with existing assignments.…”

Section: Discussionsupporting

confidence: 70%

“…We also report the introduction of a new technique using bunched ion beams, which has significantly improved the signal to background ratio. The present data were first reported by Campbell et al [11] and Forest et al [12].…”

Section: Introductionsupporting

confidence: 81%

“…Hyperfine structure was observed for all of the odd mass isotopes, including the isomeric states 87m,89m Zr. Unfortunately, no data were obtained for 86 Zr due to contamination of the beam with large amounts of krypton, which had been used to provide a mass calibration [12]. The summations of the spectra for each mass are shown in figures 2 and 3, where the abscissae have been converted from acceleration voltages to Doppler corrected frequencies relative to the resonance positions of the reference isotopes, 88 Zr and 100 Zr.…”

Section: On-line Measurementsmentioning

confidence: 99%

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Collinear laser spectroscopy of radioisotopes of zirconium

Thayer

Billowes

Campbell

et al. 2003

J. Phys. G: Nucl. Part. Phys.

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Isotope shifts and hyperfine structures have been measured for radioisotopes of ionic zirconium using on-line laser spectroscopy at the IGISOL facility in Jyväskylä, where the installation of an ion beam cooler/buncher has significantly improved the experimental sensitivity. Measurements have been made on all the neutron-deficient isotopes from 87 Zr to 90 Zr, including the isomers 87m,89m Zr, and the neutron-rich isotopes from 96 Zr to 102 Zr. The change in mean square charge radii between the isotopes and the nuclear moments of the odd isotopes have been extracted. The data show a sudden increase in the mean square charge radius at mass A = 100, consistent with an onset of nuclear deformation which has been observed in the gamma ray spectroscopy of isotope chains in this region of the nuclear chart.

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Section: Discussionsupporting

confidence: 70%

Section: Introductionsupporting

confidence: 81%

Section: On-line Measurementsmentioning

confidence: 99%

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Collinear laser spectroscopy of radioisotopes of zirconium

Thayer

Billowes

Campbell

et al. 2003

J. Phys. G: Nucl. Part. Phys.

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“…The bunching technique was therefore the breakthrough for laser spectroscopy with IGISOL. During the last decade the chains of Y [209,210,211], Zr [212,213,214], Nb [215] and Mo [216] were studied. An additional technique facilitated the spectroscopy of Y, Zr and Nb: Optical pumping in the coolerbuncher was applied to prepare the ions in states that are more favorable for laser spectroscopy than the respective ground state.…”

Section: Region Of Deformation At N = 60mentioning

confidence: 99%

Precision atomic physics techniques for nuclear physics with radioactive beams

Blaum¹,

Dilling²,

2013

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Atomic physics techniques for the determination of ground-state properties of radioactive isotopes are very sensitive and provide accurate masses, binding energies, Q-values, charge radii, spins, and electromagnetic moments. Many fields in nuclear physics benefit from these highly accurate numbers. They give insight into details of the nuclear structure for a better understanding of the underlying effective interactions, provide important input for studies of fundamental symmetries in physics, and help to understand the nucleosynthesis processes that are responsible for the observed chemical abundances in the Universe. Penning-trap and and storage-ring mass spectrometry as well as laser spectroscopy of radioactive nuclei have now been used for a long time but significant progress has been achieved in these fields within the last decade. The basic principles of laser spectroscopic investigations, Penning-trap and storage-ring mass measurements of short-lived nuclei are summarized and selected physics results are discussed. † going to cryogenic temperatures, or enhancing the induced signal by using higher charge states and/or longer accumulation times. Ideal applications for this method are mass measurements of super-heavy element (SHE) isotopes for nuclear structure studies as they are performed at SHIPTRAP [25,26]. SHE are produced in minuscule quantities, and typically have half-lives of hundreds of milliseconds to a few seconds. A proof-ofprinciple experiment is planned at the TRIGA reactor facility TRIGA-TRAP at Mainz University [27] and applications for HITRAP with highly charged ions are foreseen [28]. Requirements for Mass Measurements of Radioactive IonsThe specific requirements for the mass measurements of radioactive ions stem from the parameters of the ions themselves. For example the required sensitivity (depending on the production yield) and measurement speed (depending on the half-life) as well as the envisaged application which dictates the required precision. In order to be meaningful, all measurements should deliver reliable data, hence precise and accurate. The physics requirements can be categorized with the corresponding relative precision as follows:• nuclear structure, δm/m ≈ 1 × 10 −7• nuclear astrophysics, δm/m ≈ 1 × 10 −7/−8 • test of fundamental symmetries, neutrino physics, δm/m ≈ 1 × 10 −8/−9

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“…The IGISOL facility offers significant advantages over conventional on-line mass separators (for example see [4][5][6][7][8]): (1) the ion guide method can provide isotope beams of any element, regardless of chemistry and with fast extraction times in the range of ∼1 ms;…”

Section: Methodsmentioning

confidence: 99%

Nuclear charge radii and electromagnetic moments of scandium isotopes and isomers in the f7/2 shell

et al. 2006

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Collinear laser spectroscopy experiments on the ScII transition 3d4s 3 D 2 →3d4p 3 F 3 at λ≈363.1 nm were performed on the 42-46 Sc isotopic chain using an ion guide isotope separator with a cooler-buncher. Isotope and isomer shifts and hyperfine structures of five ground states and two isomers were measured. Preliminary results on the nuclear moments and charge radii changes deduced from these measurements are reported.Key words collinear laser spectroscopy . cooled and bunched ion beam . isotope shifts and hyperfine structure of 42-46 Sc . nuclear moments and charge radii in f 7/2 neutron shell 1 Introduction

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Laser spectroscopy of neutron deficient zirconium isotopes

Cited by 21 publications

References 22 publications

Collinear laser spectroscopy of radioisotopes of zirconium

Collinear laser spectroscopy of radioisotopes of zirconium

Precision atomic physics techniques for nuclear physics with radioactive beams

Nuclear charge radii and electromagnetic moments of scandium isotopes and isomers in the f7/2 shell

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