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The behavior of advanced gas reactor simulated spent nuclear fuels in wet interim storage conditions 先进气体反应堆模拟了乏燃料在湿过渡贮存条件下的行为
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.140
E. Howett, C. Boxall, Richard J. Wilbraham, D. Hambley
The safe interim storage of spent nuclear fuel is important to prevent the degradation of the containers and fuel rods – both fuel pellets and cladding – thus avoiding the release of radiation and allowing the fuel to be safely handled on transfer to a long term disposal facility. The corrosion of pure UO2 and UK Advanced Gas-cooled Reactor (AGR) simulated spent nuclear fuels (SIMFUELs) was studied under conditions typical of those found in interim spent fuel storage pond waters. With respect to the dissolution of spent fuel, it appears to be advantageous to dose the ponds to pH≈11.4. The alkaline conditions in the pond water suppress the dissolution as UO2 which may otherwise occur at neutrality and lower pHs.
乏核燃料的安全临时储存对于防止容器和燃料棒(包括燃料球团和包层)的降解非常重要,从而避免辐射的释放,并允许燃料在转移到长期处置设施时得到安全处理。研究了纯UO2和英国先进气冷堆(AGR)模拟乏燃料(SIMFUELs)在乏燃料临时贮存池中典型的腐蚀条件下的腐蚀。关于乏燃料的溶解,将池的pH值加到≈11.4似乎是有利的。池塘水中的碱性条件抑制了UO2的溶解,否则在中性和低ph值时可能会发生UO2的溶解。
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引用次数: 3
Development of two-color resonance ionization scheme for Th using an automated wide-range tunable Ti:sapphire laser system 利用自动化宽范围可调谐钛蓝宝石激光系统开发钛双色共振电离方案
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.97
H. Tomita, Atsushi Nakamura, Daiki Matsui, Ryohei Ohtake, V. Sonnenschein, Kosuke Saito, Kotaro Kato, M. Ohashi, Vincent Degner, K. Wendt, M. Morita, T. Sakamoto, Toshihide Kawai, Takeo Okumura, I. Moore, T. Iguchi
aDepartment of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan; bInstitute of Physics, Johannes Gutenberg-University Mainz, Mainz, Germany; cDepartment of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji-City, Tokyo, 192-0015, Japan; dJapan Neutron Optics Inc., 20-5, Takeshima-cho, Gamagori-shi, Aichi, 443-0031, Japan; eDepartment of Physics, University of Jyväskylä, Jyväskylä, Finland
a名古屋大学量子工程系,日本名古屋千草区福罗町,464-8603;b德国美因茨约翰内斯·古腾堡大学物理研究所;c神学院大学应用物理系,日本东京八千里市中野町2665-1,日本东京,192-0015;d日本中子光学有限公司,爱知县竹岛町20-5,日本,443-0031;e芬兰Jyväskylä大学物理系Jyväskylä
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引用次数: 3
Impacts of 240Pu self-shielding effect and uncertainties of σ(n,γ) at resonance energy on the reactivity controllability in HTGR inert matrix fuel 240Pu自屏蔽效应和共振能量处σ(n,γ)不确定性对HTGR惰性基质燃料反应性可控性的影响
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.100
T. Aoki, H. Sagara, C. Han
The resonance (n,γ) reaction of Pu is one of dominant phenomena to the self-shielding effect and the reactivity controllability in plutonium fuel for high temperature gas cooled reactors (HTGRs) aiming to deep-burning. Impacts of the mitigation of the self-shielding effect and nuclear data uncertainties for the resonance (n,γ) reaction of Pu on the reactivity controllability were investigated for various fuel design using MVP code. k∞ decreased from 1.3 to 1.05 and reactivity fluctuation decreased from 30% to 6% in the proposed inert matrix fuel (IMF) design with a dilution of the TRU oxide kernel and the neutron spectrum control because of mitigation of Pu self-shielding effect at 1.056-eV.
钚的(n,γ)共振反应是实现高温气冷堆深层燃烧钚燃料自屏蔽效应和反应性可控性的主要现象之一。采用MVP程序研究了不同燃料设计中自屏蔽效应的缓解和核数据不确定性对Pu (n,γ)共振反应的反应性可控性的影响。在惰性基质燃料(IMF)设计中,通过稀释TRU氧化物核和抑制1.056 ev时Pu自屏蔽效应的中子谱控制,k∞从1.3降至1.05,反应性波动从30%降至6%。
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引用次数: 2
Study on criticality in natural barrier for disposal of fuel debris from Fukushima Daiichi NPS 福岛核电站燃料碎片自然屏障处理临界研究
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.183
T. Shimada, K. Takubo, S. Takeda, Tetsuji Yamaguchi
After fuel debris is removed from the reactor containment vessel at Fukushima Daiichi NPS (1F) and collected in containers in the future, the containers may be disposed of at a deep geological repository. The uranium inventory and fissile U enrichment of the fuel debris can be higher than those of spent fuels and high-level vitrified wastes. In this study, we estimated the quantity of uranium precipitated at the natural barrier using one-dimensional migration analysis, and studied dimension of uranium precipitated in the natural barrier and carried out the criticality analysis. As the result, more than 200 MTU is precipitated at redox front in the natural barrier to reach the criticality. Criticality analysis indicated that keff is lower than 0.98 when all uranium of 250 MTU distributed into longer than 700 m as cuboid shape at the accumulated area.
未来,在从福岛第一核电站(1F)反应堆安全壳中取出燃料碎片并收集到容器中后,这些容器可能会在一个深层地质储存库中处置。燃料碎片的铀库存和可裂变铀浓缩可高于乏燃料和高水平玻璃化废物的铀库存和铀浓缩。在本研究中,我们利用一维迁移分析估算了天然屏障中铀的析出量,并研究了天然屏障中铀的析出量纲并进行了临界分析。因此,在天然屏障的氧化还原前沿沉淀了200多个MTU,达到临界。临界分析表明,当250 MTU的铀全部以长方体形式分布在累积区大于700 m时,keff小于0.98。
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引用次数: 0
Recent advances of Targeted Radioisotope Therapy (TRT) research (PLENARY) 靶向放射性同位素治疗(TRT)研究进展(全体会议)
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.1
T. Higashi
QST and our department were established in April 2016, focusing the researches in targeted radioisotope therapy (TRT). Recently, TRT attracted attention because a newly-developed commercially available pharmaceutical, Ra-223 chloride (trade name; Xofigo), an alpha particle emitting TRT agent. Despite the conventional TRT agents, such as I-131, Sr-89 and Y-90, are beta emitting phamaceuticals, Ra-223 chloride is a first-ever alpha particle emitting TRT product and shows a strong therapeutic effect in patients with bone metastases from prostate cancer because of its poweful cell killing effect of alpha particle irradiation. In TRT research fields, there are several other promising alpha particle emitting TRT agents, and one of these promising alpha particle emitting TRT agents is Ac-225 labelled PSMA-617 (Prostate Specific Membrane Antigen-617), which is a newly developed TRT agent and showed a suprising therapeutic effect in two metastatic prostate cancer patients in end-stage (case report in J Nucl Med 2016). QST and our department recently developed and reported one promising candidate for TRT, metaAt-211 astato-benzylguanidine (At-211-MABG). At-211-MABG is also an alpha-emitting radiopharmaceutical targeting the treatment of neuroendocrine tumors, such as malignant pheochromocytoma. In this session, we would like to show our recent advance in the research of At-211-MABG. One of our research goals is to develop Japan’s first-ever Japanese-made pharmaceutical products for TRT including Ac-225 labelled TRT agents. In addition, we would like to show our strategies in the future development of preclinical and clinical researches, dosimetric researches, and regulatory science, especially in the field of alpha emitter TRT pharmaceutical products.
QST与我科成立于2016年4月,专注于靶向放射性同位素治疗(TRT)的研究。最近,TRT引起了人们的注意,因为一种新开发的市售药物Ra-223氯化物(商品名称;Xofigo),一种发射α粒子的TRT剂。尽管传统的TRT药物,如I-131、Sr-89和Y-90都是释放β粒子的药物,但Ra-223氯是有史以来第一个释放α粒子的TRT产品,由于其强大的α粒子照射细胞杀伤作用,在前列腺癌骨转移患者中显示出很强的治疗效果。在TRT研究领域,还有其他几种很有前景的α粒子发射TRT药物,其中一种很有前景的α粒子发射TRT药物是Ac-225标记的PSMA-617(前列腺特异性膜抗原-617),这是一种新开发的TRT药物,在2例晚期转移性前列腺癌患者中显示出惊人的治疗效果(J nuclear Med 2016病例报告)。QST和我系最近开发并报道了一种很有前景的TRT候选物,metaAt-211 astato-benzylguanidine (At-211-MABG)。At-211-MABG也是一种α -放射药物,靶向治疗神经内分泌肿瘤,如恶性嗜铬细胞瘤。在本次会议上,我们将展示At-211-MABG的最新研究进展。我们的研究目标之一是开发日本有史以来第一个日本制造的TRT药品,包括Ac-225标记的TRT制剂。此外,我们希望展示我们在临床前和临床研究,剂量学研究和监管科学的未来发展战略,特别是在α发射器TRT制药产品领域。
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引用次数: 0
Electronic structure of URu2Si2 studied by photoelectron spectroscopy (INVITED) 光电子能谱法研究URu2Si2的电子结构
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.82
S. Fujimori, Y. Takeda, T. Okane, Y. Saitoh, A. Fujimori, H. Yamagami, Y. Haga, E. Yamamoto, Y. Ōnuki
aCondensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo, 679-5148, Japan; Department of Physics, University of Tokyo, Hongo, Tokyo, 113-0033, Japan; Department of Physics, Faculty of Science, Kyoto Sangyo University, Kyoto, 603-8555, Japan; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan; Faculty of Science, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan
日本原子能机构凝聚态科学部,兵库市赛约,679-5148;东京大学物理系,东京,113-0033;京都工业大学理学院物理系,日本京都603-8555;日本原子能机构先进科学研究中心,东海,茨城县,319-1195;琉球大学理学院,西原,冲绳,903-0213
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引用次数: 1
Medical isotopes from ISAC actinide targets 医学同位素从ISAC锕系目标
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.4
P. Kunz, C. Andreoiu, J. Crawford, J. Even, F. H. Garcia, L. Lambert, J. Lassen, V. Radchenko, C. Ramogida, A. Robertson, J. RuthThomas, P. Schaffer
Medical isotopes from ISAC actinide targets Peter Kunz, Corina Andreoiu, Jason R. Crawford, Julia Even, Fatima H. Garcia, Laura Lambert, Jens Lassen, Valery Radchenko, Caterina F. Ramogida, Andrew K.H. Robertson, Thomas J. Ruth and Paul Schaffer aTRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada; bDepartment of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; cPhysics and Astronomy, University of British Columbia , Vancouver, BC, V6T 1Z4, Canada; d Department of Physics and Astronomy, University of Victoria, Victoria, BC, V8P 5C2, Canada: e KVI Center for Advanced Radiation Technology, Zernikelaan 25, 9747 AA Groningen, Netherlands
来自ISAC锕系元素的医学同位素靶Peter Kunz, Corina Andreoiu, Jason R. Crawford, Julia Even, Fatima H. Garcia, Laura Lambert, Jens Lassen, Valery Radchenko, Caterina F. Ramogida, Andrew K.H. Robertson, Thomas J. Ruth和Paul Schaffer aTRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada;b西蒙弗雷泽大学化学系,加拿大BC省本拿比V5A 1S6;c英属哥伦比亚大学物理与天文学,温哥华,BC, V6T 1Z4,加拿大;d维多利亚大学物理与天文学系,不列颠哥伦比亚省维多利亚,v8p5c2; e荷兰维多利亚大学先进辐射技术中心,泽尼克拉安25,9747 AA格罗宁根
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引用次数: 5
Mutual separation of trivalent lanthanide and actinides by hydrophilic and lipophilic multidentate diamides 亲水亲脂多齿二胺对三价镧系元素和锕系元素的相互分离
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.27
Y. Sasaki, Keisuke Morita
Not only the separation of actinide (An) from lanthanide (Ln) but also the separation of Am and Cm are required. Although there includes difficulty of the mutual separation of these metals, we take the solvent extraction method using lipophilic and hydrophilic diamides and aminopolyacetic acid dissolved in both aqueous and organic phases, in order to get high separation factors. It is clear that combination of two ligands (TODGA as an extractant and DTPA or DTPAbisamide as a masking agent) give around and higher 10 of SF for Nd/Am and Nd/Cm, and combination of two ligands (DGA and DOODA ligands) give around 2 of SF for Am/Cm in column separation.
不仅需要锕系元素(An)和镧系元素(Ln)的分离,而且需要Am和Cm的分离。虽然这些金属存在相互分离的困难,但我们采用溶剂萃取法,将亲脂和亲水二胺和氨基聚乙酸溶解在水相和有机相中,以获得较高的分离系数。很明显,两种配体的组合(TODGA作为萃取剂,DTPA或DTPAbisamide作为掩蔽剂)对Nd/Am和Nd/Cm的SF值约为10或更高,两种配体的组合(DGA和DOODA配体)在柱分离中对Am/Cm的SF值约为2。
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引用次数: 3
Absorbent property of fullerene for cesium isotope separation investigated using X-ray photoelectron spectroscopy 用x射线光电子能谱研究了富勒烯对铯同位素分离的吸收特性
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.161
T. Sekiguchi, K. Yokoyama, Y. Uozumi, M. Yano, H. Asaoka, Shin'ichi Suzuki, T. Yaita
Tetsuhiro Sekiguchi, Keiichi Yokoyama, Yuki Uozumi, Masahiro Yano, Hidehito Asaoka, Shinichi Suzuki and Tsuyoshi Yaita aJapan Atomic Energy Agency, Materials Science Research Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki, 319-1195, Japan; bHitachi Power Solutions, Saiwai-cho, Hitachi, Ibaraki, 317-0073, Japan; cJapan Atomic Energy Agency, Advanced Science Research Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki, 319-1195, Japan
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引用次数: 1
Cation-cation interaction between NpVO2+ and Li+ in a concentrated LiCl solution 浓LiCl溶液中NpVO2+与Li+的阳离子-阳离子相互作用
Pub Date : 2018-11-01 DOI: 10.15669/PNST.5.41
T. Fujii, Y. Shibahara, C. Kato, A. Uehara
Cation-cation interaction between NpVO2+ and Li+ in a concentrated LiCl solution Toshiyuki Fujii, Yuji Shibahara, Chizu Kato and Akihiro Uehara Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Research Reactor Institute, Kyoto University, 2-1010 Asashiro Nishi, Kumatori, Sennan, Osaka 590-0494, Japan
浓LiCl溶液中NpVO2+与Li+的阳离子-阳离子相互作用藤井俊之,柴原裕二,加藤千津,上原明宏大阪大学工程研究生院可持续能源与环境工程系,2-1山田,大阪565-0871京都大学反应堆研究所,2-1010,日本大阪仙南熊鸟市,590-0494
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引用次数: 0
期刊
Progress in Nuclear Science and Technology
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