Transmutation of 129I and 237Np using spallation neutrons produced by 1.5, 3.7 and 7.4GeV protons

Wan, J.-S.; Schmidt, Th.; Langrock, E.-J.; Vater, P.; Brandt, R.; Adam, J.; Bradnová, V.; Bamblevski, V.P.; Gelovani, L.K.; Gridnev, T.D.; Kalinnikov, V. G.; Krivopustov, M.I.; Kulakov, B.A.; Perelygin, V.P.; Pronskikh, Vitaly; Stegailov, V. I.; Tsoupko‐Sitnikov, V. M.; Modolo, Giuseppe; Odoj, R.; Phlippen, P.-W.; Zamani-Valassiadou, M.; Adloff, J.C.; Debeauvais, M.; Hashemi-Nezhad, S.R.; Guo, Shi-Lun; Li, L.; Wang, Y.-L.; Dwivedi, K.K.; Zhuk, I.V.; Boulyga, Sergei F.; Lomonossova, E.M.; Kievitskaja, A.F.; Rakhno, I.; Chigrinov, S.E.; Wilson, W.B.

doi:10.1016/s0168-9002(01)00175-9

Cited by 32 publications

(3 citation statements)

References 18 publications

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“…All neutrons induce (n, γ) and other reactions in various sensors. Details are given in [1,2,[7][8][9][10], only a short description will be given here. Using the lanthanum sensor, which is monoisotopic stable 139 La, one can study the neutron capture reaction 139 La n, γ 140 La −→ β-decay, T 1/2 = 40.28 hours .…”

Section: Neutron Emission From the "Gamma-2" Target Irradiated With Pmentioning

confidence: 99%

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Hashemi-Nezhad

Zamani-Valasiadou

Krivopustov

et al. 2011

Physics Research International

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The neutron production in thick targets irradiated with 1 GeV protons was studied experimentally, and results are well understood with model calculations, including MCNPX 2.7a. However, one observes very large neutron production rates in the interaction of 44 GeV 12C onto thick Cu-, Pb-, and U-targets beyond calculated rates. The experimental spallation product yield curve in a 20 cm thick Cu target irradiated with 72 GeV 40Ar also cannot be reproduced by several model codes, including MCNPX 2.7a. This may be due to secondary fragments produced in high energy ( GeV) heavy-ion interactions which destroy target nuclei more effectively than primary ions. These observed experimental facts constitute “unresolved problems” from a fundamental point of view. It may have an impact on radiation protection issues for future heavy-ion accelerators.

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Section: Neutron Emission From the "Gamma-2" Target Irradiated With Pmentioning

confidence: 99%

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Hashemi-Nezhad

Zamani-Valasiadou

Krivopustov

et al. 2011

Physics Research International

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“…However, there were still many atoms of xenon which were not released from the compressed target bounded in iodide crystal. Besides, some researchers were interested in studying the transmutation rate by simulation code [9,10] and some experiments were done in short irradiation time, thus transmutation rate can be measured by g spectrum [11][12][13][14][15][16][17][18][19][20]. But this measurement method is only suitable for short-time experiment and always has considerable uncertainty in the measurement of transmutation rates.…”

Section: Introductionmentioning

confidence: 99%

Gas mass spectrum analysis of I-127 transmutation targets irradiated by Xi'an pulse reactor

Ouyang

Wei

et al. 2012

Journal of Nuclear Science and Technology

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Xe-128 in I-127 transmutation targets irradiated by Xi'an pulse reactor was analyzed by using Quadrupole Mass Spectrometer (QMS) to calculate transmutation rate and release rate. Transmutation is an alternative method to transform long-lived toxic radio nuclides to short-lived radio nuclides or stable nuclides. 127 I targets were irradiated in Xi'an Pulse Reactor for the first time to simulate the transmutation behavior of 129 I. After irradiation, 128 Xe in the target was determinate with online isotope dilution method by Quadrupole Mass Spectrometer (QMS), so that the transmutation rate and release rate could be calculated. Release behaviors of 128 Xe were investigated through melting and step-heated modes. The stepwise heating experiment was done by puncturing method. The result shows the release rate in melting mode is 99.9% (RSD ¼ 1%) and increases with the temperature in stepwise heating mode. The technique proposed in this work is suitable for accurate determination of transmutation rate of 129 I.

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“…The target was surrounded by paraffin of thickness 60 mm. Basic information and results are showed in [1,2]. The second spallation target was called GAMMA-3.…”

Section: Spallation Targetsmentioning

confidence: 99%

Current research on ADS at the Joint Institute for Nuclear Research

Zeman¹,

Adam²,

Katovsky³

et al. 2017

Proceedings of 4th Workshop on ADS and Thorium — PoS(ADST2016)

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The research on Accelerator Driven Systems (ADS) has more than 20 year's tradition at the Joint Institute for Nuclear Research. Since 2010, the most experiments have been performed with a spallation target composed of 512 kg of natural uranium. This target called QUINTA was irradiated with proton and deuteron beams of high energies. Currently, final preparations of a new spallation target BURAN consisting of 21 tons of depleted uranium are under way. The main tasks of the project are experimental investigation of neutron production inside the spallation target, possibility of natural thorium utilization and transmutation of the minor actinides and long-lived fission products. The supplementary field of interest is a measurement of nuclear data and verification of nuclear codes and theoretical models related to the ADS technologies.4th Workshop on ADS and thorium

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Transmutation of 129I and 237Np using spallation neutrons produced by 1.5, 3.7 and 7.4GeV protons

Cited by 32 publications

References 18 publications

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Neutron Production in Thick Targets Irradiated with High-Energy Ions

Gas mass spectrum analysis of I-127 transmutation targets irradiated by Xi'an pulse reactor

Current research on ADS at the Joint Institute for Nuclear Research

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