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| 1 | 惠州加速器集群装置及其未来发展显示文摘本文概述了基于粒子加速器的核物理研究主要的前沿方向和重要科学问题,分析了用于核物理研究的粒子加速器大科学装置发展现状和未来发展态势.国家'十二五'重大科技基础设施'强流重离子加速器装置'(High Intensity heavy-ion Accelerator Facility,HIAF)和'加速器驱动的嬗变研究装置'(China Initiative Accelerator Driven System,CiADS)正在广东惠州建设.以HIAF和CiADS为基础,本文提出建设用于核物理及其交叉前沿研究的大型带电粒子加速器集群装置——高亮度电子-离子研究装置(Bright Electron and Ion Research Facility,BEIF).依托BEIF装置拟开展的核物理前沿研究方向包括原子核结构、核天体物理、核子结构、夸克物质相结构,以及基础物理若干重要前沿与核物理的交叉,如高离化态原子物理、重离子驱动的高能量密度物理等.BEIF是由多台超导直线加速器、同步加速器、储存环、反应堆和各类大型实验探测器及实验终端等组成的大科学装置集群.BEIF计划分三期进行建设,建成后的装置将极大地推动我国的核物理和核科学技术研究能力的提升. | 赵红卫 徐瑚珊 肖国青 夏佳文 杨建成 周小红 许怒 何源 马新文 杨磊 陈旭荣 唐晓东 赵永涛 孙志宇 王志光 胡正国 张军辉 马力祯 原有进 詹文龙 | 2020 | 中国科学:物理学、力学、天文学2020,50,11: | 10 |
| 2 | Recent progress in theoretical nuclear physics related to large-scale scientific facilities显示文摘Several large-scale scientific facilities(LSSF) are running and several others are under construction in China.Recent progress made by Chinese scientists in theoretical study of nuclear physics related to these facilities is reviewed.The emphasis is put on those topics covered in the issue entitled 'Special Topics on Some Theoretical Nuclear Physics Aspects Related to Large-scale Scientific Facilities'(in Sci China Ser G-Phys Mech Astron,Vol.52,No.10,2009). | ZHAO EnGuang WANG Fan | 2011 | Chinese Science Bulletin2011,56,35: | 7 |
| 3 | Investigation of octupole effects in superheavy nuclei with improved potential-energy-surface calculations显示文摘It has been found that high-order deformation (e.g.β6) can have important effects on the structures of superheavy nuclei. In the present work, we investigate octupole deformation effects on superheavy nuclei with an improved potential-energy-surface (PES) calculation by including reflection-asymmetric deformations in a space of (β2 ,β3 ,β4 , β5). The calculations give various deformations including highly deformed (β2 ≈ 0.4) and superdeformed (β2 ≈ 0.7) shapes. The octupole-deformation degree of freedom mainly affects the fission barrier beyond the second minimum of PES. | WANG HuaLei LIU HongLiang XU FuRong JIAO ChangFeng | 2012 | Chinese Science Bulletin2012,57,15: | 7 |
| 4 | Towards the drip lines of the nuclide landscape显示文摘In the paper we review the recent progress of studies in unstable nuclei,mainly affiliated with the facilities of radioactive ion beams in China,including both experimental and theoretical aspects of researches.Many experiments for reactions,decays and structures have been performed targeting better understandings of properties of unstable nuclei.Special experimental measurements related to nuclear astrophysics have been done to seek insights into the processes of syntheses of elements in the universe.Theoretical calculations have provided many useful predictions on the behaviors of unstable nuclei,with model developments.Studies covered many mass regions from light to superheavy nuclei,giving plenty of information about the structures of unstable nuclei,towards the limits of existence of atomic nuclei. | XU FuRong | 2012 | Chinese Science Bulletin2012,57,36: | 5 |
| 5 | Model-independent trend of α-preformation probability显示文摘The α-preformation probability is directly deduced from experimental α decay energies and half-lives in an analytical way without any modified parameters. Several other model-deduced results, are used to compare with that of the present study. The key role played by the shell effects in the α-preformation process is indicated in all these cases. In detail, the α-preformation factors of different theoretical extractions are found to have similar behavior for one given isotopic chain, implying the model-independent varying trend of the preformation probability of α particle. In addition, the formation probability of heavier particle in cluster radioactivity is also obtained, and this confirms the relationship between the cluster preformation factor and the product of the cluster and daughter proton numbers. | QIAN YiBin REN ZhongZhou | 2013 | Science China(Physics,Mechanics & Astronomy)2013,56,8: | 3 |
| 6 | Calculations of β-decay half-lives of proton-rich nuclei显示文摘We investigate the half-lives of β + /EC(electron capture) decay using the proton-neutron quasiparticle random-phase approximation(pnQRPA) with a δ-form Gamow-Teller residual interaction.Both particle-hole and particle-particle residual interactions are consistently introduced in dealing with the pnQRPA matrix equation.The sensitivity of the calculated half-lives to some physical quantities used in the calculations is examined.Calculations are performed for even-even neutron-deficient isotopes ranging from Z = 10 to Z = 76.Good agreement between experiment and theory is achieved especially for the nuclei far from stability,and the results of our calculations are discussed with comparison with other theoretical results.Predictions on the β-decay half-lives of some very neutron-deficient nuclei are also given for reference in future experiments. | NI DongDong REN ZhongZhou ZHI QiJun | 2012 | Science China(Physics,Mechanics & Astronomy)2012,55,12: | 1 |
| 7 | Rotational properties in even-even superheavy ^(254-258)Rf nuclei based on total-Routhian-surface calculations显示文摘High-spin yrast structures of even-even superheavy nuclei254-258Rf are investigated by means of total Routhian-surface approach in three-dimensional(β2, γ, β4) space. The behavior in the moments of inertia of256 Rf is well reproduced by our calculations, which is attributed to the j15/2neutron rotation-alignment. The competition between the rotationally aligned i13/2proton and j15/2neutron may occur to a large extent in256 Rf. High-spin predictions are also made for its neighboring isotopes254,258 Rf, showing that the alignment of the j15/2neutron pair is more favored than that of the i13/2proton pair. | 王华磊 柴清祯 蒋金鸽 柳敏良 | 2014 | Chinese Physics C2014,38,7: | 0 |
| 8 | Determination of astrophysical ^7Be(p, γ)8B reaction rates from the ^7Li(d, p)^8Li reaction显示文摘The7Be(p,γ)8B reaction plays a central role not only in the evaluation of solar neutrino fluxes but also in the evolution of the first stars.Study of this reaction requires the asymptotic normalization coefficient(ANC) for the virtual decay8 Bg.s.→7Be + p.By using the charge symmetry relation,we obtain this proton ANC with the single neutron ANC of8 Lig.s.→7Li + n,which is determined with the distorted wave Born approximation(DWBA) and adiabatic distorted wave approximation(ADWA) analysis of the7Li(d,p)8Li angular distribution.The astrophysical S-factors and reaction rates of the direct capture process in the7Be(p,γ)8B reaction are further deduced at energies of astrophysical relevance.The astrophysical S-factor at zero energy for direct capture,S17(0),is derived to be(19.9±3.5) e V b in good agreement with the most recent recommended value.The contributions of the1+and 3+resonances to the S-factor and reaction rate are also evaluated.The present result demonstrates that the direct capture dominates the7Be(p,γ)8B reaction in the whole temperature range.This work provides an independent examination to the current results of the7Be(p,γ)8B reaction. | DU XianChao GUO Bing LI ZhiHong PANG DanYang LI ErTao LIU WeiPing | 2015 | Science China(Physics,Mechanics & Astronomy)2015,58,6: | 0 |