Release of Kr, Ag, Sn, I and Xe from UCx targets

Roussière, B.; Bajeat, O.; Barré, Nicole; Bourgeois, C.; Clapier, F.; Cottereau, E.; Donzaud, C.; Ducourtieux, M.; Essabaa, S.; Guillemaud‐Mueller, D.; Ibrahim, F.; Lau, C.; Blanc, F. Le; Lefort, Hugues; Liang, C. F.; Mueller, A. C.; Obert, J.; Pauwels, N.; Potier, J.C.; Pougheon, F.; Proust, J.; Sauvage, J.; Sorlin, O.; Verney, D.; Wojtasiewicz, A.

doi:10.1016/j.nimb.2006.01.007

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…With the latter, the only element for which the released fraction reached 60% is Sn. One can note that the dominant process controlling the fission-product release by UC x targets is diffusion for noble gases whereas it is desorption or effusion for Sn [34]. The low release properties of the GATCHINA-type uranium carbide are confirmed by the measurement performed after heating the pellet to 2000 °C since the RF values obtained at 2000 °C are only slightly better than or equal to (in the limits of error bars) those measured at 1700 °C.…”

Section: Tablementioning

confidence: 70%

Characterization of uranium carbide target materials to produce neutron-rich radioactive beams

Tusseau‐Nenez

Roussière

Barré-Boscher

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Tablementioning

confidence: 70%

Characterization of uranium carbide target materials to produce neutron-rich radioactive beams

Tusseau‐Nenez

Roussière

Barré-Boscher

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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“…More speculative extrapolations have been done for the production of radioactive isotopes for other elements typically produced by FEBIAD sources, as for instance observed at ISOLDE. For these elements, the release efficiencies have been estimated from the parameterization of on-line data obtained at ISOLDE [19], PARNNE [21], and if not available from diffusioneffusion coefficients found in the literature, using the parametrization of diffusion and effusion described by Kirchner in [22]. The FEBIAD ionization efficiencies are extrapolated from measured data with noble gases.…”

Section: Secondary Beam Intensitiesmentioning

confidence: 99%

New exotic beams from the SPIRAL 1 upgrade

Delahaye

Dubois

Maunoury

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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Since 2001, the SPIRAL 1 facility has been one of the pioneering facilities in ISOL techniques for reaccelerating radioactive ion beams: the fragmentation of the heavy ion beams of GANIL on graphite targets and subsequent ionization in the Nanogan ECR ion source has permitted to deliver beams of gaseous elements (He, N, O, F, Ne, Ar, Kr) to numerous experiments. Thanks to the CIME cyclotron, energies up to 20 AMeV could be obtained. In 2014, the facility was stopped to undertake a major upgrade, with the aim to extend the production capabilities of SPIRAL 1 to a number of new elements. This upgrade, which is presently under commissioning, consists in the integration of an ECR booster in the SPIRAL 1 beam line to charge breed the beam of different 1+ sources. A FEBIAD source (the so-called VADIS from ISOLDE) was chosen to be the future workhorse for producing many metallic ion beams. This source was coupled to the SPIRAL 1 graphite targets and tested on-line with different beams at GANIL. The charge breeder is an upgraded version of the Phoenix booster which was previously tested in ISOLDE. It was lately commissioned at LPSC and more recently in the SPIRAL 1 beam lines with stable beams. The upgrade additionally permits the use of other target material than graphite. In particular, the use of fragmentation targets will permit to produce higher intensities than from projectile fragmentation, and thin targets of high Z will be used for producing beams by fusion-evaporation. The performances of the aforementioned ingredients of the upgrade (targets, 1+ source and charge breeder) have been and are still being optimized in the frame of different European projects (EMILIE, ENSAR and ENSAR2). The upgraded SPIRAL 1 facility will provide soon its first new beams for physics and further beam development are undertaken to prepare for the next AGATA campaign. The results obtained during the on-line commissioning period permit to evaluate intensities for new beams from the upgraded facility.

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“…In principle, uranium composites present good release properties [43]. However, as already mentioned, the refractory nature of the elements of interest results in extremely low extraction efficiencies [44,45,46]. In this case, the two-stage scenario, where non-refractory neutron-rich fission residues like 132 Sn can be easily extracted from a 238 U target, post-accelerated, and then fragmented will allow the production of refractory neutron-rich nuclei below 132 Sn with much higher yields.…”

Section: B Benchmarking Of Model Calculationsmentioning

confidence: 99%

Production of medium-mass neutron-rich nuclei in reactions induced byXe136projectiles at 1AGeV on a beryllium target

et al. 2008

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Production cross sections of medium-mass neutron-rich nuclei obtained in the fragmentation of 136 Xe projectiles at 1 A GeV have been measured with the FRagment Separator (FRS) at GSI. 125 Pd was identified for the first time. The measured cross sections are compared to 238 U fission yields and model calculations in order to determine the optimum reaction mechanism to extend the limits of the chart of the nuclides around the r-process waiting point at N=82.

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Release of Kr, Ag, Sn, I and Xe from UCx targets

Cited by 9 publications

References 25 publications

Characterization of uranium carbide target materials to produce neutron-rich radioactive beams

Characterization of uranium carbide target materials to produce neutron-rich radioactive beams

New exotic beams from the SPIRAL 1 upgrade

Production of medium-mass neutron-rich nuclei in reactions induced byXe136projectiles at 1AGeV on a beryllium target

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