Xenon isotopes far from stability studied by collisional ionization laser spectroscopy

Borchers, W.; Arnold, E.; Neu, W.; Neugart, R.; Wendt, Κ.; Ulm, G.

doi:10.1016/0370-2693(89)91359-2

Cited by 77 publications

(32 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latest adjustment [39] was preferred to the one in [40] (yielding = 0:831 N for 33 Ar) which was based on rather poor empirical data dening the quenching for the 2s 1=2 orbital. Though the Schmidt (single-particle) limit ( sp = 1 : 148 N f o r a d 3 = 2 neutron and sp = 1:91 N f o r a s 1 = 2 neutron) is almost reached for 37 Ar, the results for 33 Ar and 35 Ar deviate strongly from the Schmidt limit. The case of short-lived 33 Ar (T z = 3=2) ts perfectly to the overall trend of good consistency observed for the upper sd-shell nuclei closer to stability (see Figure 5).…”

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 75%

“…value for the Sternheimer shielding factor has been published for argon, the correction is neglected following the arguments of the corresponding analyses for krypton [34] and xenon [35]. It should be pointed out that the ratios of quadrupole moments obtained from relation (3) are free from these systematic uncertainties.…”

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

“…The magnetic moment of 37 Ar was preferred as a reference to the more precisely known moment of 35 Ar [30], since the A-factor of the former isotope was determined more accurately in the present experiment. A calculation of the hyperne anomaly x;37 based on the theoretical decomposition of the magnetic moments into spin, orbit and polarization contribution compiled in Table 4 (see Section 4.1.1) predicts negligible corrections of x;37 1 10 4 for all cases [31,32].…”

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

“…The values of hr 2 i 38;A compiled in Table 3 have been derived using the scaling factors (13) and (14)). The electromagnetic moments of the radioactive argon nuclei 33 Ar, 35 Ar and 37 Ar can be discussed within the framework of shell-model calculations for the sd-shell by Brown and Wildenthal [14]. This model assumes an inert 16 O core and the valence nucleons distributed over the full sd-shell.…”

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

See 3 more Smart Citations

Moments and mean square charge radii of short-lived argon isotopes

et al. 1996

Self Cite

View full text Add to dashboard Cite

We report on the measurement of optical isotope shifts for 32 40 Ar and for 46 Ar from which the changes in mean square nuclear charge radii across the N = 20 neutron shell closure are deduced. The investigations were carried out by collinear laser spectroscopy in fast beams of neutral argon atoms. The ultra-sensitive detection combines optical pumping, stateselective collisional ionization and counting of -radioactivity. By reaching far into the sd-shell, the results add new information to the systematics of radii in the calcium region (Z 20). Contrary to all major neutron shell closures with N 28, the N = 20 shell closure causes no signicant slope change in the development of the radii. Information from the hyperne structure of the odd-A isotopes includes the magnetic moments of 33 Ar (I = 1 = 2) and 39 Ar (I = 7 = 2), and the quadrupole moments of 35 Ar, 37 Ar (I = 3 = 2) and 39 Ar. The electromagnetic moments are compared to shell-model predictions for the sd-and fp-shell. Even far from stability a v ery good agreement between experiment and theory is found for these quantities. The mean square charge radii are discussed in the framework of spherical SGII Skyrme-type Hartree-Fock calculations.Keywords: NUCLEAR STRUCTURE 32 40;46 Ar; measured isotope shifts, hfs; deduced hyperne constants, spins I, magnetic dipole moments , electric quadrupole moments Q s , mean square charge radii hr 2 i; Collinear fast-beam laser spectroscopy, collisional ionization and -detection; shell model (sd-, fp-shell).

show abstract

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 75%

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

Section: Hyperne Structure and Electromagnetic Momentsmentioning

confidence: 99%

See 2 more Smart Citations

Moments and mean square charge radii of short-lived argon isotopes

et al. 1996

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the 1989 paper "Xenon isotopes far from stability studied by collisional ionization laser spectroscopy" Borchers et al reported the discovery of 146 Xe [189]. Neutron rich isotopes were produced by proton-induced spallation of lanthanum or by uranium fission.…”

Section: Xementioning

confidence: 99%