Quadrupole moment of 11Li

Arnold, E.; Bonn, J.; Klein, Alexander; Neugart, R.; Neuroth, M; Otten, E.‐W.; Lievens, Peter; Reich, H.; Widdra, W.

doi:10.1016/0370-2693(92)90266-7

Cited by 95 publications

(65 citation statements)

References 15 publications

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“…The result of I 3 2 = ruled out strong deformation as a possibility to explain the exceptionally large matter radius obtained from break-up cross-sections [22] in high-energy reactions. Later on, with refined NMR techniques, even the quadrupole moment could be determined by measuring the interaction with the electric field gradient at the Li lattice site in a LiNbO 3 crystal [23]. In the comparison of 9 Li and 11 Li it turned out that the two additional (halo) neutrons have little effect on the quadrupole moment.…”

Section: New Methods and Highlights Since 2000mentioning

confidence: 99%

Collinear laser spectroscopy at ISOLDE: new methods and highlights

Neugart

Billowes

Bissell

et al. 2017

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

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Over three and a half decades of collinear laser spectroscopy and the COL-LAPS setup have played a major role in the ISOLDE physics programme. Based on a general experimental principle and diverse approaches towards higher sensitivity, it has provided unique access to basic nuclear properties such as spins, magnetic moments and electric quadrupole moments as well as isotopic variations of nuclear mean square charge radii. While previous methods of outstanding sensitivity were restricted to selected chemical elements with special atomic properties or nuclear decay modes, recent developments have yielded a breakthrough in sensitivity for nuclides in wide mass ranges. These developments include the use of bunched beams from the radiofrequency quadrupole cooler-buncher ISCOOL, which allows a suppression of background by several orders of magnitude. Very recently, the combination of collinear laser spectroscopy with the principle of laser resonance ionisation took shape in the new CRIS setup, providing a very selective and efficient detection of optical resonance. We outline the basic experimental developments and discuss important results on nuclei or chains of isotopes in different mass ranges.

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Section: New Methods and Highlights Since 2000mentioning

confidence: 99%

Collinear laser spectroscopy at ISOLDE: new methods and highlights

Neugart

Billowes

Bissell

et al. 2017

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

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“…2 on nuclei polarized by in-beam optical pumping 3 . This technique has already been used to measure the quadrupole moments of 9 Li and 11 Li 4,5 . The spin-polarized beams of short-lived radioactive isotopes are implanted into a crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the electric quadrupole moments of 26–29Na

et al. 2000

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The nuclear electric quadrupole moments of the isotopes 26 Na, 27 Na, 28 Na and 29 Na were measured by -NMR spectroscopy in single crystals of LiNbO 3 and NaNO 3 . High degrees of nuclear polarization were produced by optical pumping of the sodium atoms in a fast beam with a collinear laser beam. The polarized nuclei were implanted into the crystals and NMR signals were observed in the -decay asymmetries. Preparatory measurements also yielded improved values for the magnetic moments of 27,31 Na and con rmed the spin I = 3=2 for 31 Na. The results are discussed in comparison with large-basis shell-model calculations.

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“…Compared with the conventional Ñ MR, the new technique is more efficient by the factor of (8/9)J3(/+1)2(21+1)2 for the spin I. A similar technique was used at CERN ISOLDE independently, for the study of the Q moment of the very neutron-rich nucleus of llU [7]. Because of the new NQR technique, the application of the present production technique to the Q moment measurement is realistic.…”

Section: Results Obtained and Futurementioning

confidence: 99%

“…Nuclear magnetic moments have been studied using such a combined technique. In addition, a modified NQR technique [6,7], which was recently developed from the conventional ~-NMR technique, will make even the quadrupole moment measurement possible. The present technique is useful also for any other ~-NMR studies on the hyperfine interactions of radioactive impurities in various materials including ferromagnetic samples.…”

Section: Introductionmentioning

confidence: 99%