Release and yields from thorium and uranium targets irradiated with a pulsed proton beam

Evensen, A.-H.; Catherall, R.; Drumm, P.V.; Duppen, P. Van; Jönsson, O.; Kugler, E.; Lettry, J.; Tengblad, O.; Tikhonov, V. I.; Ravn, H.L.

doi:10.1016/s0168-583x(96)01086-5

Cited by 40 publications

(24 citation statements)

References 9 publications

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“…The effective utilization of nuclear power will require continued improvements in nuclear technology, particularly related to safety and efficiency. Nowadays, except for the oxide based fuels, the nitride fuels also participate in the competition to become the alternative materials for their superior thermophysical properties, such as high melting point, high thermal conductivity, and high density, as well as the good compatibility with the coolant (liquid sodium) [2][3][4][5]. Since the high density of nitride fuels can bring out more excess neutrons, therefore, they have a higher potential to transmute the long lived fission products.…”

Section: Introductionmentioning

confidence: 99%

Electronic structures, mechanical and thermodynamic properties of ThN from first-principles calculations

Wang

et al. 2011

Journal of Nuclear Materials

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Lattice parameter, electronic structure, mechanical and thermodynamic properties of ThN are systematically studied using the projector-augmented-wave method and the generalized gradient approximation based on the density functional theory. The calculated electronic structure indicates the important contributions of Th 6d and 5f states to the Fermi-level electron occupation. Through Bader analysis it is found that the effective valencies in ThN can be represented as Th +1.82 N −1.82 .Elastic constant calculations shows that ThN is mechanically stable and elastically anisotropic.Furthermore, the melting curve of ThN is presented up to 120 GPa. Based on the phonon dispersion data, our calculated specific heat capacities including both lattice and conduction-electron contributions agree well with experimental results in a wide range of temperature.

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Section: Introductionmentioning

confidence: 99%

Electronic structures, mechanical and thermodynamic properties of ThN from first-principles calculations

Wang

et al. 2011

Journal of Nuclear Materials

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“…All activities were produced at the ISOLDE isotope separator at CERN, with a 1 GeV proton beam of about 2 A. 9 For 208,211,213 Fr a thoriumdi-phtalo-cyamineϩThC 2 target was used. These isotopes were produced directly and one after the other implanted on line ͑at 60 keV͒ into the same iron foil ͑purity 99.998%, thickness 50 m͒ that was soldered to the cold finger of the NICOLE 3 He- 4 He dilution refrigerator.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Hyperfine field of francium in iron

et al. 1998

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The hyperfine field of francium in iron has been measured for different isotopes using the method of low-temperature nuclear orientation and samples prepared by ion implantation at Tр1 K. For 208 Fr a nuclear magnetic resonance was observed. From the center frequency L (B ext ϭ0 T)ϭ490.7(4) MHz, we derive the corresponding magnetic hyperfine field as B hf (FrFe)ϭ94.9(4) T. ͓S0163-1829͑98͒05118-2͔

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“…The experimental errors of the obtained yield values are in the limits of 30% for isotopes not far from stability and of 80% for short-lived neutron-rich isotopes. Cs yields from both investigated targets are plotted together with the ISOLDE yields [6,9] obtained for standard target at the PS-Booster and for graphite cloth target at SC. As one can see from fig.…”

Section: Yield Comparisonmentioning

confidence: 99%

“…For more than thirty years UC x targets [5,6] have been explored for production of a large set of neutron-rich and neutron deficient heavy nuclei. The main direction of uranium carbide target development was the creation of the target material with a high dispersivity and porosity in order to decrease the release time of the produced by different reactions in the target material species which is mainly determined by the diffusion and effusion processes.…”

Section: Introductionmentioning

confidence: 99%

Recent developments and on-line tests of uranium carbide targets for production of nuclides far from stability

Panteleev

Alyakrinskiy

Andrighetto

et al. 2007

Eur. Phys. J. Spec. Top.

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The capacity of uranium carbide target materials of different structure and density for production of neutron-rich and heavy neutron-deficient nuclides have been investigated. The yields of Cs and Fr produced by a 1 GeV proton beam of the PNPI synchrocyclotron and release properties of different targets have been measured. The comparison of the yields and release efficiencies of Cs and Fr produced from a high density UC target material and from low density UC x prepared by the ISOLDE method at IRIS in the collaboration with PARRNe group from Orsay are presented. The yields from ISOLDE original target are presented for comparison as well. 28.60.+S; 29.25.Rm PACS.

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Release and yields from thorium and uranium targets irradiated with a pulsed proton beam

Cited by 40 publications

References 9 publications

Electronic structures, mechanical and thermodynamic properties of ThN from first-principles calculations

Electronic structures, mechanical and thermodynamic properties of ThN from first-principles calculations

Hyperfine field of francium in iron

Recent developments and on-line tests of uranium carbide targets for production of nuclides far from stability

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