水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68....水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68.4820(10)°,β=83.523(2)°,γ=64.4180(10)°,V=1.16095(2)nm^(3),Z=1,Dc=2.661 g/cm^(3),Mr=1860.73,μ(MoKα)=35.22 cm^(-1),F(000)=888,R=0.0478,wR=0.099。化合物的结构包含2个结晶学上独立的铜原子、不连续的多氧阴离子β-[Mo_(8)O_(2)6]4-和无限扩展的[Cu I(C_(10)H_(8)N_(2))]链。每一个铜原子为类似的{CuN_(2)}配位模式,被4,4’-联吡啶连接成一维沿a轴方向的[Cu(C 10 H 8 N 2)]+链。分子结构中存在氢键和π…π作用。对化合物的热稳定性、荧光性质也进行了研究。展开更多
Aluminum is the primary structural material in nuclear engineering,and its cross section induced by 14-MeV neutrons is of great significance.To address the issue of insufficient accuracy for the^(27)Al(n,2n)^(26)Al re...Aluminum is the primary structural material in nuclear engineering,and its cross section induced by 14-MeV neutrons is of great significance.To address the issue of insufficient accuracy for the^(27)Al(n,2n)^(26)Al reaction cross section,the activation method and accelerator mass spectrometry(AMS)technique were used to determine the^(27)Al(n,2n)^(26)Al cross section,which could be used as a D-T plasma ion temperature monitor in fusion reactors.At the China Academy of Engineering Physics,neutron activation was performed using a K-400 neutron generator produced by the T(d,n)4He reaction.The^(26)Al∕^(27)Al isotope ratios were measured using the newly installed GYIG 1 MV AMS at the Institute of Geochemistry,Chinese Academy of Sciences.The neutron flux was monitored by measuring the activity of 92mNb produced by the 93Nb(n,2n)92mNb reaction.The measured results were compared with available data in the experimental nuclear reaction database,and the measured values showed a reasonable degree of consistency with partially available literature data.The newly acquired cross-sectional data at 12 neutron energy points through systematic measurements clarified the divergence,which has two different growth trends from the existing experimental values.The obtained results are also compared with the corresponding evaluated database,and the newly calculated excitation functions with TALYS−1.95 and EMPIRE−3.2 codes,the agreement with CENDL−3.2,TENDL-2021 and EMPIRE−3.2 results are generally acceptable.A substantial improvement in the knowledge of the^(27)Al(n,2n)^(26)Al reaction excitation function was obtained in the present work,which will lay the foundation for the diagnosis of the fusion ion temperature,testing of the nuclear physics model,evaluation of nuclear data,etc.展开更多
文摘水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68.4820(10)°,β=83.523(2)°,γ=64.4180(10)°,V=1.16095(2)nm^(3),Z=1,Dc=2.661 g/cm^(3),Mr=1860.73,μ(MoKα)=35.22 cm^(-1),F(000)=888,R=0.0478,wR=0.099。化合物的结构包含2个结晶学上独立的铜原子、不连续的多氧阴离子β-[Mo_(8)O_(2)6]4-和无限扩展的[Cu I(C_(10)H_(8)N_(2))]链。每一个铜原子为类似的{CuN_(2)}配位模式,被4,4’-联吡啶连接成一维沿a轴方向的[Cu(C 10 H 8 N 2)]+链。分子结构中存在氢键和π…π作用。对化合物的热稳定性、荧光性质也进行了研究。
基金the Open Project of Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology(NLK 2022-04)the Central Government Guidance Funds for Local Scientific and Technological Development,China(No.Guike,ZY22096024)+1 种基金the National Natural Science Foundation of China(12065003)Guangxi Key R&D Project(2023AB07029).
文摘Aluminum is the primary structural material in nuclear engineering,and its cross section induced by 14-MeV neutrons is of great significance.To address the issue of insufficient accuracy for the^(27)Al(n,2n)^(26)Al reaction cross section,the activation method and accelerator mass spectrometry(AMS)technique were used to determine the^(27)Al(n,2n)^(26)Al cross section,which could be used as a D-T plasma ion temperature monitor in fusion reactors.At the China Academy of Engineering Physics,neutron activation was performed using a K-400 neutron generator produced by the T(d,n)4He reaction.The^(26)Al∕^(27)Al isotope ratios were measured using the newly installed GYIG 1 MV AMS at the Institute of Geochemistry,Chinese Academy of Sciences.The neutron flux was monitored by measuring the activity of 92mNb produced by the 93Nb(n,2n)92mNb reaction.The measured results were compared with available data in the experimental nuclear reaction database,and the measured values showed a reasonable degree of consistency with partially available literature data.The newly acquired cross-sectional data at 12 neutron energy points through systematic measurements clarified the divergence,which has two different growth trends from the existing experimental values.The obtained results are also compared with the corresponding evaluated database,and the newly calculated excitation functions with TALYS−1.95 and EMPIRE−3.2 codes,the agreement with CENDL−3.2,TENDL-2021 and EMPIRE−3.2 results are generally acceptable.A substantial improvement in the knowledge of the^(27)Al(n,2n)^(26)Al reaction excitation function was obtained in the present work,which will lay the foundation for the diagnosis of the fusion ion temperature,testing of the nuclear physics model,evaluation of nuclear data,etc.
