Determination de l'intensite d'un faisceau de deutons extrait d'un synchrotron et mesure des sections efficaces des reactions 12C(d, p2n)11C et 27Al(d, 3p2n)24Na á 2,33 GeV

Banaigs, J.; Berger, J.‐P.; Duflo, J.; Goldzahl, L.; Harff, O.; Cottereau, M.; Lefebvres, F.; Quechon, H.; Tardy-Joubert, P.

doi:10.1016/0029-554x(71)90382-x

Cited by 42 publications

(10 citation statements)

References 7 publications

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“…No significant contribution was expected with regard to the fast neutron spectrum field in the whole uranium target. The expectation has been experimentally confirmed within the statistical uncertainties since the value 1.05 (12) represents the ratio of reaction rates for the fission of nonshielded and Cd-covered nat U samples during 1 GeV irradiation. Regarding this case, there are presented the experimental values of reaction rates of identified residual nuclei in Fig.…”

Section: Fission Reactionsupporting

confidence: 60%

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A summary of experimental results on the reactions in uranium samples irradiated with a deuteron beam of energies up to 8 GeV at the QUINTA target

Zavorka¹,

Adam²,

Furman³

et al. 2013

Proceedings of XXI International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXI)

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Natural uranium samples have been irradiated in a neutron field generated via spallation reaction at the QUINTA target (500 kg of nat U). The dependence of the reaction rates of residual nuclei produced inside the samples on the incident deuteron energy of the maximum value of 8 GeV has been investigated. Both the activation measurement technique and the gamma-ray spectrometry have been used. A comparison with MCNPX calculation is enclosed. Nevertheless, the results are still preliminary and also need to be verified by providing further experiments.

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Section: Fission Reactionsupporting

confidence: 60%

“…The reaction cross-section values were obtained by fitting the data taken from Ref. [12,13]. The resulting values regarding the total beam intensity are listed in Ref.…”

Section: The Irradiation Processmentioning

confidence: 99%

A summary of experimental results on the reactions in uranium samples irradiated with a deuteron beam of energies up to 8 GeV at the QUINTA target

Zavorka¹,

Adam²,

Furman³

et al. 2013

Proceedings of XXI International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXI)

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“…Reaction's cross-section was obtained as an interpolation of values published in EXFOR database [5]. Regrettably, only few sets of data are available in GeV energy region, namely one point at 2.33 GeV determined by Bainaigs (15.25 ± 1.50) mb [6] and two points by Kozma [7]: (14.1 ± 1.3) mb at 6.0 GeV and (14.7 ± 1.2) mb at 7.3 GeV by using absolute calibrated fission chambers. In the low energy region up to 60 MeV 3 data sets were chosen, namely Weinreich [8], Michel [9] and Takacs [10].…”

Section: Irradiationmentioning

confidence: 99%

Cross-sections of residual nuclei from deuteron irradiation of thin thorium target at energy 7 GeV

et al. 2017

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Abstract. The residual nuclei yields are of great importance for the estimation of basic radiation-technology characteristics (like a total target activity, production of long-lived nuclides etc.) of accelerator driven systems planned for transmutation of spent nuclear fuel and for a design of radioisotopes production facilities. Experimental data are also essential for validation of nuclear codes describing various stages of a spallation reaction. Therefore, the main aim of this work is to add new experimental data in energy region of relativistic deuterons, as similar data are missing in nuclear databases. The sample made of thin natural thorium foil was irradiated at JINR Nuclotron accelerator with a deuteron beam of the total kinetic energy 7 GeV. Integral number of deuterons was determined with the use of aluminum activation detectors. Products of deuteron induced spallation reaction were qualified and quantified by means of gamma-ray spectroscopy method. Several important spectroscopic corrections were applied to obtain results of high accuracy. Experimental cumulative and independent cross-sections were determined for more than 80 isotopes including metastable isomers. The total uncertainty of results rarely exceeded 9%. Experimental results were compared with MCNP6.1 Monte-Carlo code predictions. Generally, experimental and calculated cross-sections are in a reasonably good agreement, with the exception of a few light isotopes in a fragmentation region, where the calculations are highly under-estimated. Measured data will be useful for future development of high-energy nuclear codes. After completion, final data will be added into the EXFOR database.

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“…The three monitors were placed between 2 and 3 m away from the Quinta target to avoid backscattered neutrons contaminating the measurement. Only three experimental values for the 27 Al(d,3p2n) 24 Na cross section in the GeV range at 2.33 [3], 6.0 and 7.3 GeV ( [4] are known. Therefore, the cross section at 2, 4 and GeV energies were estimated from interpolating the curve fitted to experimental data in the energy range of 0.1-7.3 GeV.…”

Section: Irradiation Detailsmentioning

confidence: 99%

Lead shielding impact on fast neutron spectrum (>10MeV) in QUINTA uranium target

Szuta¹,

Strugalska-Gola²,

Kilim³

et al. 2015

Proceedings of XXII International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXII)

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The QUINTA uranium target is a deeply sub-critical active core consisting of 512 kg of natural uranium rods arranged hexagonally. The target is irradiated by a pulsed beam of relativistic ions using the JINR NUCLOTRON accelerator. In the paper the lead shielding impact on fast neutron spectrum in the QUINTA uranium target is studied. The fast neutron energy spectra inside the volume of the QUINTA uranium target using threshold reaction in natural yttrium ( 89 Y) were measured for the same deuteron energy of 4 GeV when the uranium target of the assembly was enfolded with the lead shielding and without the shielding. The (n,xn) reaction rates of yttrium samples located inside the assembly were determined through gamma spectrometry. The measurement show that the neutron flux density increases in whole volume of the QUINTA assembly due to the lead shielding. The lead shielding influence on the neutron spectra is more pronounced in the volume located closer to the shielding. Here you can write the abstract for your paper.

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Determination de l'intensite d'un faisceau de deutons extrait d'un synchrotron et mesure des sections efficaces des reactions 12C(d, p2n)11C et 27Al(d, 3p2n)24Na á 2,33 GeV

Cited by 42 publications

References 7 publications

A summary of experimental results on the reactions in uranium samples irradiated with a deuteron beam of energies up to 8 GeV at the QUINTA target

A summary of experimental results on the reactions in uranium samples irradiated with a deuteron beam of energies up to 8 GeV at the QUINTA target

Cross-sections of residual nuclei from deuteron irradiation of thin thorium target at energy 7 GeV

Lead shielding impact on fast neutron spectrum (>10MeV) in QUINTA uranium target

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