Measurement of the244Cm capture cross sections at both CERN n_TOF experimental areas
Measurement of the244Cm capture cross sections at both CERN n_TOF experimental areas
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两个 CERN n_TOF 实验区 244Cm 捕获截面的测量
DOI：
10.1051/epjconf/202023901034
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
P. Žugec
中科院分区：
文献类型：
--
作者：
V. Alcayne;E. Mendoza;D. Cano;A. Kimura;O. Aberle;S. Amaducci;J. Andrzejewski;L. Audouin;V. Babiano;M. Bacak;M. Barbagallo;V. Bécares;F. Bečvář;G. Bellia;E. Berthoumieux;J. Billowes;D. Bosnar;A. Brown;M. Busso;M. Caamano;L. Caballero;M. Calviani;F. Calviño;A. Casanovas;F. Cerutti;Y. Chen;E. Chiaveri;N. Colonna;G. Cortés;M. Cortés;L. Cosentino;S. Cristallo;L. Damone;M. Diakaki;M. Dietz;C. Domingo;R. Dressler;E. Dupont;I. Durán;Z. Eleme;B. Fernández;A. Ferrari;I. Ferro;P. Finocchiaro;V. Furman;R. Garg;A. Gawlik;S. Gilardoni;T. Glodariu;K. Göbel;E. González;C. Guerrero;F. Gunsing;S. Heinitz;J. Heyse;D. Jenkins;E. Jericha;Y. Kadi;F. Käppeler;N. Kivel;M. Kokkoris;Y. Kopatch;M. Krticka;D. Kurtulgil;I. Ladarescu;C. Lederer;J. Lerendegui;S. Meo;S. Lonsdale;D. Macina;A. Manna;T. Martinez;A. Masi;C. Massimi;P. Mastinu;M. Mastromarco;F. Matteucci;E. Maugeri;A. Mazzone;A. Mengoni;V. Michalopoulou;P. Milazzo;F. Mingrone;A. Musumarra;A. Negret;R. Nolte;F. Ogállar;A. Oprea;N. Patronis;A. Pavlik;J. Perkowski;L. Piersanti;I. Porras;J. Praena;J. Quesada;D. Radeck;D. Doval;R. Reifarth;D. Rochman;C. Rubbia;M. Sabate;A. Saxena;P. Schillebeeckx;D. Schumann;Austin Smith;N. Sosnin;A. Stamatopoulos;G. Tagliente;J. Tain;Z. Talip;A. Tarifeño;L. Tassan;P. Torres;A. Tsinganis;J. Ulrich;S. Urlass;S. Valenta;G. Vannini;V. Variale;P. Vaz;A. Ventura;V. Vlachoudis;R. Vlastou;A. Wallner;P. Woods;T. Wright;P. Žugec
为了估算高燃耗轻水反应堆、第四代等临界快堆以及加速器驱动系统（ADS）等新型反应堆系统中次锕系元素（MA）的产生率和嬗变率，需要精确的MA中子俘获截面数据。244 Cm的俘获反应为形成较重的Cm同位素和较重的元素（如Bk和Cf）开辟了道路。此外，即使经过三年的冷却，244 Cm在高燃耗的辐照反应堆燃料中也占有近50%的锕系元素衰变热。由于难以提供同位素富集样品，而且样品的高本征活度要求使用具有高瞬时通量的中子设施，因此这种同位素的实验数据非常缺乏。之前仅有的两个关于中子俘获截面的实验数据集是在1969年使用核爆炸获得的，最近是在2010年在J-PARC获得的。已在n_TOF上使用与J-PARC之前实验相同的样本测量了中子捕获横截面。在n_TOF实验区域2（n_TOF-2）用三个C6 D 6检测器测量样品，并且还在实验区域1（n_TOF-1）用总吸收量热计（TAC）测量样品。这些新的实验数据集的质量和局限性评估的初步结果，在这两个领域的实验。这两个测量的初步产量将首次与评估的图书馆进行比较。
Accurate neutron capture cross section data for minor actinides (MAs) are required to estimate the production and transmutation rates of MAs in light water reactors with a high burnup, critical fast reactors like Gen-IV systems and other innovative reactor systems such as accelerator driven systems (ADS). Capture reactions of 244 Cm open the path for the formation of heavier Cm isotopes and of heavier elements such as Bk and Cf. In addition, 244 Cm shares nearly 50% of the total actinide decay heat in irradiated reactor fuels with a high burnup, even after three years of cooling.Experimental data for this isotope are very scarce due to the difficulties of providing isotopically enriched samples and because the high intrinsic activity of the samples requires the use of neutron facilities with high instantaneous flux. The only two previous experimental data sets for this neutron capture cross section have been obtained in 1969 using a nuclear explosion and, more recently, at J-PARC in 2010. The neutron capture cross sections have been measured at n_TOF with the same samples that the previous experiments in J-PARC. The samples were measured at n_TOF Experimental Area 2 (EAR-2) with three C6 D6 detectors and also in Experimental Area 1 (EAR-1) with the Total Absorption Calorimeter (TAC). Preliminary results assessing the quality and limitations of these new experimental datasets are presented for the experiments in both areas. Preliminary yields of both measurements will be compared with evaluated libraries for the first time.
影响因子：
2.7
作者：
Guerrero, C.;Tsinganis, A.;Zugec, P.
通讯作者：
Zugec, P.