Plutonium assay by spectrophotometry and estimation of uncertainties on routine glove box samples

Autor: Yoshiyasu Kato, Dante Nakazawa, Georges E. Duhamel, Shuuji Yamazaki, Andreas Starzer, Alexandre Ruas, Kenichi Mise, Chang-Kyu Kim, Konstantinos Raptis

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 326:779-787

Plutonium(VI) spectrophotometry is a precise analytical method for determining the concentration of plutonium solutions. It is simple and cost-effective to implement in nuclear environments such as glove boxes and hot-cells. Uncertainties were assess

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b7ae5afc3193a28240149e3e040b670
https://doi.org/10.1007/s10967-020-07369-1

Enhancement of molecular formation in fiber-optic laser ablation with a long nanosecond pulsed laser

Autor: Ikuo Wakaida, Tetsuo Sakka, Shinji Yae, Katsuaki Akaoka, Ayumu Matsumoto, Alexandre Ruas, Hironori Ohba, Masaaki Toshimitsu

Publikováno v: Spectrochimica Acta Part B: Atomic Spectroscopy. 155:56-60

Fiber-optic laser-induced breakdown spectroscopy (LIBS) can be used for on-site chemical analysis in harsh environments with a flexible light delivery system. In this work, the use of a long-pulse laser (100 ns) is proposed for the detection of molec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::324ea0897e4ff6c655940d6dea15872a
https://doi.org/10.1016/j.sab.2019.03.009

Monitoring the plutonium depletion in dissolution residues of a spent fuel solution using a surrogate and plutonium isotope ratio measurements

Autor: Alexandre Quemet, Emilie Buravand, Brigitte Catanese, Patrick Huot, Alexandre Ruas, Vincent Dalier

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry, Springer Verlag, 2020, https://doi.org/10.1007/s10967-020-07311-5. ⟨10.1007/s10967-020-07311-5⟩
Journal of Radioanalytical and Nuclear Chemistry, 2020, https://doi.org/10.1007/s10967-020-07311-5. ⟨10.1007/s10967-020-07311-5⟩

International audience; This study presents the development of an innovative experiment using a surrogate, for monitoring the depletion kinetics of plutonium dissolution residues in an irradiated fuel dissolution solution containing a high plutonium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70b8192c0d40ef23ad3a9ab47f3dea93
https://hal-cea.archives-ouvertes.fr/cea-02932076/file/Publi_Isotope_ratio_vs_dissolution_revision2.docx

Application of laser-induced breakdown spectroscopy to zirconium in aqueous solution

Autor: Hironori Ohba, Ikuo Wakaida, Katsuaki Akaoka, Ayumu Matsumoto, Alexandre Ruas

Publikováno v: Spectrochimica Acta Part B: Atomic Spectroscopy. 131:99-106

In the context of the Fukushima Dai-ichi Nuclear Power Plant (F1-NPP) decommissioning process, laser-induced breakdown spectroscopy (LIBS) has many advantages. The purpose of the present work is to demonstrate the on-line monitoring capability of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::686d2ba957ca8636e4de9ccfa8672fee
https://doi.org/10.1016/j.sab.2017.03.014

Validation of gravimetry for high-accuracy analysis of uranium

Autor: Danièle Roudil, Cédric Rivier, Isabelle Solinhac, Alexandre Ruas, Warda Ben Messaoud

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 311:1831-1838

Gravimetry after calcination is an assay method for determining the quantity of a given element from the mass measurement. This method, adapted for high concentration and purity uranium solution, has the advantage of not being related to a chemical s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1017bab01ebd9553f19a91de80915bc
https://doi.org/10.1007/s10967-016-5116-7