Progress in ISOL target–ion source systems

Köster, U.; Arndt, O.; Bouquerel, E.; Fedoseyev, V. N.; Frånberg, H.; Joinet, A.; Jost, C.; Kerkines, Ioannis S. K.; Kirchner, R.

doi:10.1016/j.nimb.2008.05.152

Cited by 45 publications

(29 citation statements)

References 70 publications

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“…The neutrons were produced using a 2-μA average current of 1.4-GeV protons incident on a tantalum rod, which acted as a proton-neutron converter [10]. Ionization of Ga atoms was selectively enhanced using the Resonance Ionization Laser Ion Source (RILIS) laser ion source [11], while the use of the converter ensured suppression of the neutron-deficient Rb isobars, which are not produced by neutron-induced fission of uranium.…”

Section: Experimental Methodsmentioning

confidence: 99%

Ground-state spins and moments of72,74,76,78Ga nuclei

et al. 2011

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Laser spectroscopy was performed on the 72,74,76,78 Ga isotopes at On-Line Isotope Mass Separator (ISOLDE) facility, CERN. Ground-state nuclear spins and moments were extracted from the measured hyperfine spectra. The results are compared to shell-model calculations, which provide a detailed probe of the nuclear wave function. The spin is established from the shape of the hyperfine structure and the parity inferred from a comparison of shell-model calculations with the measured nuclear moments. The ground states of 76,78 Ga are both assigned a spin and parity of I π = 2 − , while 74 Ga is tentatively assigned as I π = 3 − . For 72 Ga, the results are consistent with the previous I = 3 assignment.

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Section: Experimental Methodsmentioning

confidence: 99%

Ground-state spins and moments of72,74,76,78Ga nuclei

et al. 2011

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“…The isotope mass was selected using the high-resolution separator of the facility. Contaminating In isobars were suppressed using a primary target with a temperature controlled quartz transfer line [22]. Due to the different vapor pressures of In and Cd at the chosen target temperature a relative reduction of the contaminant of two orders of magnitude was reached.…”

Section: Radioactive Ion Beam Production and Detector Equipmentmentioning

confidence: 99%

Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
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Using the REX-ISOLDE facility at CERN the Coulomb excitation cross sections for the 0 + gs → 2 + 1 transition in the β-unstable isotopes 100,102,104 Cd have been measured for the first time. Two different targets were used, which allows for the first extraction of the static electric quadrupole moments Q(2 + 1 ) in 102,104 Cd. In addition to the B(E2) values in 102,104 Cd, a first experimental limit for the B(E2) value in 100 Cd is presented. The data was analyzed using the maximum likelihood method. The provided probability distributions impose a test for theoretical predictions of the static and dynamic moments. The data are interpreted within the shell-model using realistic matrix elements obtained from a G-matrix renormalized CD-Bonn interaction. In view of recent results for the light Sn isotopes the data are discussed in the context of a renormalization of the neutron effective charge. This study is the first to use the reorientation effect for post-accelerated short-lived radioactive isotopes to simultaneously determine the B(E2) and the Q(2 + 1 ) values.

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“…• C hot target via a chemically selective quartz transfer line into a tungsten ionizer, where resonant laser ionization was used to produced an intense, pure Zn ion beam [5][6][7]. After extraction and acceleration to 40 keV, the ISOLDE 014320-2 high-resolution separator was used to mass select an A = 80 beam.…”

Section: Introductionmentioning

confidence: 99%

Low-lying isomeric states in Ga80 from the β− decay of Zn
Fraile¹,
Henryk²,
Paziy³
2014
Phys. Rev. C
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5
18
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A new level scheme of 80 Ga has been determined. This nucleus was populated following the β − decay of 80 Zn at ISOLDE, CERN. The proposed level scheme is significantly different compared to the previously reported one and contains 26 levels up to 3.4 MeV in excitation energy. The present study establishes that the previously identified 1.9-s β − -decaying 6 − isomer is the ground state of 80 Ga and the 1.3-s β − -decaying 3 − isomer lies at an excitation energy of 22.4 keV. A new isomeric level was identified at 707.8 keV and its half-life was measured to be 18.3(5) ns, allowing the 685.4-keV transition de-exciting this state to be assigned an M2 multipolarity. The newly measured spectroscopic observables are compared with shell-model calculations using the jj44bpn and JUN45 interactions.

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Progress in ISOL target–ion source systems

Cited by 45 publications

References 70 publications

Ground-state spins and moments of72,74,76,78Ga nuclei

Ground-state spins and moments of72,74,76,78Ga nuclei

Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
Self Cite
41
9
45
0
View full text Add to dashboard Cite

Low-lying isomeric states in Ga80 from the β− decay of Zn
Fraile¹,
Henryk²,
Paziy³
2014
Phys. Rev. C
Self Cite
9
5
18
0
View full text Add to dashboard Cite

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Progress in ISOL target–ion source systems

Cited by 45 publications

References 70 publications

Ground-state spins and moments of72,74,76,78Ga nuclei

Ground-state spins and moments of72,74,76,78Ga nuclei

Electric quadrupole moments of the21+states inCd100,102Ekström1, Cederkäll2, DiJulio3 et al. 2009Phys. Rev. CSelf Cite419450View full textAdd to dashboardCite

Low-lying isomeric states in Ga80 from the β− decay of ZnFraile1, Henryk2, Paziy3 2014Phys. Rev. CSelf Cite95180View full textAdd to dashboardCite

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Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
Self Cite
41
9
45
0
View full text Add to dashboard Cite

Low-lying isomeric states in Ga80 from the β− decay of Zn
Fraile¹,
Henryk²,
Paziy³
2014
Phys. Rev. C
Self Cite
9
5
18
0
View full text Add to dashboard Cite