Synthesis and characterization of lanthanum dicarbide-carbon targets for radioactive ion beams generation via the carbothermal reaction

Carturan, S.; Tonezzer, M.; Piga, L.; Zanonato, Pier Luigi; Colombo, Paolo; Andrighetto, A.; Biasetto, Lisa; Bernardo, Plinio Dí; Maggioni, G.; Gramegna, F.; Prete, G.

doi:10.1016/j.nima.2007.09.037

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…3, the ionization current at 18 amu/e is plotted against temperature. The shape of the curve is similar for all the three samples, and can be attributed mainly to H 2 O coming from the decomposition of the phenolic resin [17,19,20] and to the little water present in the set-up and adsorbed in the reagent mixture.…”

Section: And U 3 O 8 Containing Samplesmentioning

confidence: 81%

“…Recently, the usage of lanthanum dicarbide (LaC 2 ) was suggested as a substitute of uranium compounds for preliminary bench tests on the production and characterization of highly porous carbides [17,[19][20][21]. In [17,19,20], the development of lanthanum carbide possessing a controlled amount of porosity, with dimensions ranging from few nanometers to some microns was achieved by using oxalate instead of oxides as precursors for lanthanum, and using carbon nanotubes as the source of carbon.…”

Section: Introductionmentioning

confidence: 99%

“…In [17,19,20], the development of lanthanum carbide possessing a controlled amount of porosity, with dimensions ranging from few nanometers to some microns was achieved by using oxalate instead of oxides as precursors for lanthanum, and using carbon nanotubes as the source of carbon.…”

Section: Introductionmentioning

confidence: 99%

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Developing uranium dicarbide–graphite porous materials for the SPES project

Biasetto¹,

Zanonato²,

Carturan³

et al. 2010

Journal of Nuclear Materials

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Section: And U 3 O 8 Containing Samplesmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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Developing uranium dicarbide–graphite porous materials for the SPES project

Biasetto¹,

Zanonato²,

Carturan³

et al. 2010

Journal of Nuclear Materials

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“…(1) high limiting temperature, defined as the temperature above which the material vapor pressure begins to negatively affect the efficiency of the ion source [5,6]; (2) low density and high permeability, to favor the effusion of the produced nuclei.…”

Section: Introductionmentioning

confidence: 99%

Boron carbide as a target for the SPES project

Corradetti

Carturan

Biasetto

et al. 2013

Journal of Nuclear Materials

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“…Much research work has been done to improve release efficiencies by studying the influence of several parameters. Numerous studies have pointed out the impact of the uranium precursors [1]- [5] or lanthanum precursors taken as uranium structural equivalent [6], [7] on the target porosity. It appears that, as the precursors generate more gas, the porosity is favoured.…”

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confidence: 99%

Development of radioactive beams at ALTO: Part 2. Influence of the UCx target microstructure on the release properties of fission products

Guillot

Roussière

Tusseau‐Nenez

et al. 2019

Nuclear Instruments and Methods in Physics Research Section B:

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Producing intense radioactive beams, in particular those consisting of short-lived isotopes requires the control of the release efficiency. The released fractions of 11 elements were measured on 14 samples that were characterized by various physicochemical analyses in a correlated paper (Part 1). A multivariate statistical approach, using the principal component analysis, was performed to highlight the impact of the microstructure on the release properties. Samples that best release fission products consist of grains and aggregates with small size and display a high porosity distributed on small diameter pores. They were obtained applying a mixing of gro und uranium dioxide and carbon nanotubes powders leading to homogeneous uranium carbide samples with a porous nanostructure. A modelling under on-line ALTO conditions was carried out using the FLUKA code to compare the yields released by an optimized and a conventional target. __________________________________________________________________________________________ Introduction:The research and development program at the ALTO facility (Accélérateur Linéaire et Tandem d'Orsay) of the Institut de Physique Nucléaire d'Orsay (IPNO) aims to provide new beams of exotic and neuton-rich nuclei, as intense as possible. At ALTO, neutron-rich nuclei are produced by photofission in thick uranium carbide targets. An efficient way to improve the intensities of the radioactive beams, in particular those consisting of short-lived isotopes, would be to develop dense and porous targets. These two properties are antagonistic but essential to increase the fission fragment quantity produced and diffuse them out of the target respectively.

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Synthesis and characterization of lanthanum dicarbide-carbon targets for radioactive ion beams generation via the carbothermal reaction

Cited by 13 publications

References 18 publications

Developing uranium dicarbide–graphite porous materials for the SPES project

Developing uranium dicarbide–graphite porous materials for the SPES project

Boron carbide as a target for the SPES project

Development of radioactive beams at ALTO: Part 2. Influence of the UCx target microstructure on the release properties of fission products

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