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^3PF2 neutron superfluidity in neutron stars and three-body force effect
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作者 崔常喜 左维 H.J.Schulze 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第9期3289-3293,共5页
We investigate the ^3PF2 neutron superfluidity in H-stable neutron star matter and neutron stars by using the BCS theory and the Brueckner-Hartree-Fock approach. We adopt the Argonne V18 potential supplemented with a ... We investigate the ^3PF2 neutron superfluidity in H-stable neutron star matter and neutron stars by using the BCS theory and the Brueckner-Hartree-Fock approach. We adopt the Argonne V18 potential supplemented with a microscopic three-body force as the realistic nucleon-nucleon interaction. We have concentrated on studying the threebody force effect on the ^3PF2 neutron pairing gap. It is found that the three-body force effect is to enhance remarkably the ^3PF2 neutron superfluidity in neutron star matter and neutron stars. 展开更多
关键词 ^3pf2 superfluidity neutron star three-body force Brueckner-Hartree-Fock approach
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中子物质中的^3PF2态超流性和微观三体核力效应
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作者 崔常喜 左维 《物理学报》 SCIE EI CAS CSCD 北大核心 2007年第9期5185-5190,共6页
利用Brueckner-Hartree-Fock(BHF)和BCS理论方法,计算了纯中子物质中处于3PF2态的中子对关联能隙,特别是研究并讨论了微观三体核力对3PF2态中子超流性强弱的影响.结果表明:三体核力显著地增强了中子物质中3PF2态中子超流性;当采用BHF单... 利用Brueckner-Hartree-Fock(BHF)和BCS理论方法,计算了纯中子物质中处于3PF2态的中子对关联能隙,特别是研究并讨论了微观三体核力对3PF2态中子超流性强弱的影响.结果表明:三体核力显著地增强了中子物质中3PF2态中子超流性;当采用BHF单粒子能谱时,三体核力导致相应的对关联能隙峰值由0.22MeV增大到0.50MeV. 展开更多
关键词 中子物质 ^3pf2超流性 三体核力 BCS理论
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新型白光LED的光谱特性和相关结温特性 被引量:11
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作者 胡长奇 张方辉 张静 《发光学报》 EI CAS CSCD 北大核心 2012年第9期939-943,共5页
利用蓝光LED芯片激发[Ru(dtb-bpy)3]2+(PF6-)2和YAG混合荧光粉的方法制备了新型白光LED,研究了随着[Ru(dtb-bpy)3]2+(PF6-)2含量的增加而引起的白光LED光谱特性的变化。当[Ru(dtb-bpy)3]2+(PF6-)2的质量分数为1.5%时,白光LED的显色指数... 利用蓝光LED芯片激发[Ru(dtb-bpy)3]2+(PF6-)2和YAG混合荧光粉的方法制备了新型白光LED,研究了随着[Ru(dtb-bpy)3]2+(PF6-)2含量的增加而引起的白光LED光谱特性的变化。当[Ru(dtb-bpy)3]2+(PF6-)2的质量分数为1.5%时,白光LED的显色指数达到83.2,效率相对于其含量为0%时下降了约20%。另外,研究了结温对于一体化封装的该新型白光LED发光特性的影响,结果表明:高显色LED的结温从30℃上升到130℃的过程中,芯片的蓝光辐射出现了较大幅度的减少,共降低了27.73%,随之也导致该白光LED总发光强度的衰减,而且其发光效率出现了大幅度的下降,共衰减了31.76%,但是其显色性没有明显的变化。 展开更多
关键词 显色性 磷光材料 [Ru(dtb-bpy)3]2+(PF6-)2 有机材料 结温
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Nucleon ~3pF_2 Superfluid Pairing Gap in Asymmetry Nuclear Matter
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作者 MI Ai-Jun ZUO Wei +1 位作者 LI Zeng-Hua Umberto Lombardo 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第6期1113-1116,共4页
The 3 P F2 superfluidity of neutron and proton is investigated in isospin-asymmetric nuclear matter within the Brueckner-Hartree-Fock approach and the BCS theory by adopting the Argonne V14 and the Argonne V18 nucleon... The 3 P F2 superfluidity of neutron and proton is investigated in isospin-asymmetric nuclear matter within the Brueckner-Hartree-Fock approach and the BCS theory by adopting the Argonne V14 and the Argonne V18 nucleonnucleon interactions. We find that pairing gaps in the 3PF2 channel predicted by adopting the AV14 interaction are much larger than those by the AV18 interaction. As the isospin-asymmetry increases, the neutron 3 pF2 superfluidity is found to increase rapidly, whereas the proton one turns out to decrease and may even vanish at high enough asymmetries. As a consequence, the neutron 3pF2 superfluidity is much stronger than the proton one at high asymmetries and it predominates over the proton one in dense neutron-rich matter. 展开更多
关键词 3pf2 superfluidity asymmetric nuclear matter Brueckner-Hartree-Fock approach BCS theory
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Cu[C_5H_3N(CCH_3=N-C_6H_5)_2]_2(PF_6)_2配合物的合成、晶体结构和热分解反应动力学
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作者 蒋毅民 谭黎峰 +2 位作者 银秀菊 钟新仙 张淑华 《无机化学学报》 SCIE CAS CSCD 北大核心 2002年第8期802-806,共5页
The title complex Cu[C5H3N(CCH3=N-C6H5)2]2(PF6)2 has been synthesized by r eaction of Schiff base C5H3N(CCH3=N-C6H5)2 and cupric sulfate in toluene solut ion. The crystal structure was determined by X-ray diffraction ... The title complex Cu[C5H3N(CCH3=N-C6H5)2]2(PF6)2 has been synthesized by r eaction of Schiff base C5H3N(CCH3=N-C6H5)2 and cupric sulfate in toluene solut ion. The crystal structure was determined by X-ray diffraction method and the chemical formula weight of the complex is 1041.85. The crystal structure belongs to triclinic system with spacegroup and cell parameters: a=12.6470(10) , b=14. 123(2) , c=15.613(2);á=66.150(10)a=79.470(10)?=78.290(10)穖-3 and F(000)=1064. The final R:R1=0.0668, wR 2=0.1927; R(all data): R1=0.1133, wR2=0.2357. The Cu was coordinated by six nitrogen, at the same time the Cu formed a distorted octahedron, besides the angles and pl anes of this compound were discussed . The result of kinetics of the thermal dec omposition indicated that the first step of it is 2 series chemical reactions, t he function of machanism is f(a)=(1-a)2, and the activation energy is 144.64E/ kJ. CCDC: 180872. 展开更多
关键词 Cu[C5H3N(CCH3=N-C6H5)2]2(PF6)2 合成 热分解 反应动力学 铜配合物 SCHIFF碱 晶体结构
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利用新型磷光材料Ru(dtb-bpy)3·2(PF6)提高白光LED的显色指数 被引量:5
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作者 胡长奇 张方辉 《光电子.激光》 EI CAS CSCD 北大核心 2013年第4期669-672,共4页
为了提高白光发光二极管(LED)的显色指数,在传统白光LED的YAG粉胶层之上分别滴加0.0、1.0、3.0、4.0和5.5mgRu(dtb-bpy)3.2(PF6)的四氢呋喃溶液,制备了5种白光LED样品,并对样品的发光特性进行了检测。结果表明,随着Ru(dtb-bpy)3∶2(PF6... 为了提高白光发光二极管(LED)的显色指数,在传统白光LED的YAG粉胶层之上分别滴加0.0、1.0、3.0、4.0和5.5mgRu(dtb-bpy)3.2(PF6)的四氢呋喃溶液,制备了5种白光LED样品,并对样品的发光特性进行了检测。结果表明,随着Ru(dtb-bpy)3∶2(PF6)材料含量的增加,样品的发光强度逐渐减弱,发光光谱出现红移现象;并且Ru(dtb-bpy)3·2(PF6)有一最佳含量,即当滴加的Ru(dtb-bpy)3·2(PF6)溶液为4.0mg时,LED样品的显色指数(CRI)有明显提高,达到最高值为84.5。 展开更多
关键词 显色性 磷光材料 Ru(dtb—bpy)3·2(PF6) 有机材料 激发
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