作者机构:
[Li, Xiao-Hua; Pan, Xiao; Zou, You-Tian] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua; Wu, Xi-Jun] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Peoples R China.;[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[He, Biao] Cent South Univ, Coll Phys & Elect, Changsha 410083, Peoples R China.
通讯机构:
[Xiao-Hua Li] S;School of Nuclear Science and Technology, University of South China, Hengyang 421001, China<&wdkj&>Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China<&wdkj&>Key Laboratory of Low Dimensional Quantum Structures and Quantum Control, Hunan Normal University, Changsha 410081, China
关键词:
favored one proton radioactivity;one-parameter model;half-lives
作者机构:
[谭清懿; 杨开建; 乔冠瑾] Department of Electrical Engineering, University of South China, Hengyang, 421001, China;[杜丹] Department of Mathematics and Physics, University of South China, Hengyang, 421001, China;[潘光祖; 周华; 龚学余] Department of Nuclear Science and Technology, University of South China, Hengyang, 421001, China
通讯机构:
[Du, D.] D;Department of Mathematics and Physics, China
作者机构:
[刘杰豪; 洪昌寿] School of Resource Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421000, China;College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong, Shenzhen, 518000, China;[徐正华] College of Mathematics and Science, University of South China, Hunan, Hengyang, 421000, China;[刘永] School of Resource Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421000, China, College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong, Shenzhen, 518000, China
通讯机构:
[Liu, Y.] S;School of Resource Environment and Safety Engineering, Hunan, China
作者机构:
[Cheng, Jun-Hao; Li, Xiao-Hua] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Zhang, Zhen] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China.;[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[Chu, Peng-Cheng] Qingdao Technol Univ, Sch Sci, Qingdao 266000, Peoples R China.;[Li, Xiao-Hua] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.
关键词:
proton radioactivity;Skyrme;Hartree-Fock;macroscopic quantities of nuclear matter
摘要:
In this study, we systematically investigate the proton radioactivity half-lives of 33 spherical nuclei based on the relationship between Skyrme parameters and the macroscopic quantities of nuclear matter. Using the two-potential approach with the spherical Skyrme-Hartree-Fock model, the correlation between proton radioactivity half-life and the macroscopic quantities is analyzed. Moreover, we obtain a new Skyrme parameter set by fitting the two most weighted macroscopic quantities. Compared with the Skyrme parameters MSL0 and the theoretical model of proton radioactivity UDLP, the theoretical proton radioactivity half-life calculated using the new Skyrme parameter set can better reproduce the experimental data.
作者机构:
[Zhu, De-Xing; Li, Xiao-Hua; Xu, Yang-Yang; Liu, Hong-Ming; Zou, You-Tian] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Univ South China, Natl Exemplary Base Int Sci & Tech Collaborat Nuc, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.;[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[Chu, Peng-Cheng] Qingdao Technol Univ, Sch Sci, Inst Theoret Phys, Qingdao 266000, Peoples R China.
关键词:
two-proton radioactivity;Coulomb and proximity potential model;half-life
摘要:
Considering the preformation probability of the two emitted protons in the parent nucleus, we extend the Coulomb and proximity potential model (CPPM) to systematically study two-proton (2p) radioactivity half-lives of the nuclei close to proton drip line. The proximity potential chosen is Prox. 81 proposed by Blocki et al. in 1981. Furthermore, we apply this model to predict the half-lives of possible 2p radioactive candidates whose 2p radioactivity is energetically allowed or observed but not yet quantified in the evaluated nuclear properties table NUBASE2016. The predicted results are in good agreement with those from other theoretical models and empirical formulas, namely the effective liquid drop model (ELDM), generalized liquid drop model (GLDM), Gamow-like model, Sreeja formula and Liu formula.
作者机构:
[Zhu, De-Xing; Li, Xiao-Hua; Xu, Yang-Yang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Liu, Hong-Ming] Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China.;[Wu, Xi-Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[He, Biao] Cent South Univ, Coll Phys & Elect, Changsha 410083, Peoples R China.;[Li, Xiao-Hua] Univ South China, Natl Exemplary Base Int Sci & Tech Collaborat Nuc, Hengyang 421001, Peoples R China.
通讯机构:
[Xiao-Hua Li] S;School of Nuclear Science and Technology, University of South China, Hengyang, China<&wdkj&>National Exemplary Base for International Sci & Tech. Collaboration of Nuclear Energy and Nuclear Safety, University of South China, Hengyang, China<&wdkj&>Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang, China<&wdkj&>Key Laboratory of Low Dimensional Quantum Structures and Quantum Control, Hunan Normal University, Changsha, China
关键词:
2p radioactivity;Gamow-like model;Half-life;Excited state
摘要:
In this study, we systematically investigated the two-proton (
$$\text {2p}$$
) radioactivity half-lives from the excited state of nuclei near the proton drip line within the Gamow-like model (GLM) and modified Gamow-like model (MGLM). The calculated results were highly consistent with the theoretical values obtained using the unified fission model [Chin. Phys. C
$${\textbf {45}}$$
, 124105 (2021)], effective liquid drop model, and generalized liquid drop model [Acta Phys. Sin
$${\textbf {71}}$$
, 062301 (2022)]. Furthermore, utilizing the GLM and MGLM, we predicted the
$$\text {2p}$$
radioactivity half-lives from the excited state for some nuclei that are not yet available experimentally. Simultaneously, by analyzing the calculated results from these theoretical models, it was found that the half-lives are strongly dependent on
$$Q_\text {2p}$$
and
$$\ell $$
.
作者机构:
[彭延峰; 刘燕飞] Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan, 411201, China;[彭志华] School of Mathematics and Physics, University of South China, Hengyang, 421001, China
作者机构:
[Feng, Zhong-Wen; Zhou, Xia; Yang, Shu-Zheng; Zhou, Shi-Qi] China West Normal Univ, Phys & Space Sci Coll, Nanchong 637009, Peoples R China.;[He, Guansheng] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.
通讯机构:
[Feng, Z.-W.] P;Physics and Space Science College, China
关键词:
Joule–Thomson expansion;Maxwell invariant source;higher dimensional nonlinearly AdS black hole
作者机构:
[彭志华; 吴喜军; 徐海婷; 谭捷] School of Mathematics and Physics, University of South China, Hengyang, 421001, China;[张铭军; 邓柯; 钱楠; 刘卫; 杨果] Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
通讯机构:
[Wu, X.] S;School of Mathematics and Physics, China
关键词:
核石墨;间隙原子;第一性原理;迁移与结合
摘要:
为明确核石墨中间隙原子的存在形态与演化规律,利用第一性原理模拟研究间隙原子间的相互作用及其迁移、结合行为。研究表明:同一石墨片层上的间隙原子间存在引力,间距大于0.5 nm时其相互作用能可忽略;间隙原子倾向于沿扶手椅形方向迁移、结合,两间隙原子结合后降低的结构能约为6.0 e V;在间隙原子迁移过程中,整个迁移、结合反应的能垒约为0.4 eV;石墨中间隙原子最稳定的团簇结构是链状结构,紧邻的螺旋间隙原子结构次之,当结合的间隙原子数目超过6以后,间隙原子的结构将以包含六元碳环的团簇与底面以AB堆垛的形态存在,这是新石墨片层生成的重要机制。
作者机构:
[Peng, Jie] Shanghai Normal Univ, Math & Sci Coll, Shanghai 200234, Peoples R China.;[Zheng, Lijing] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[Wu, Chunsheng] Lianyungang Normal Univ, Dept Math, Lianyungang 222006, Peoples R China.;[Kan, Haibin] Fudan Univ, Sch Comp Sci, Shanghai Key Lab Intelligent Informat Proc, Shanghai 200433, Peoples R China.;[Kan, Haibin] Shanghai Blockchain Engn Res Ctr, Fudan Zhongan Joint Lab Blockchain & Informat Sec, Shanghai 200433, Peoples R China.
通讯机构:
[Kan, Haibin] F;[Kan, Haibin] S;Fudan Univ, Sch Comp Sci, Shanghai Key Lab Intelligent Informat Proc, Shanghai 200433, Peoples R China.;Shanghai Blockchain Engn Res Ctr, Fudan Zhongan Joint Lab Blockchain & Informat Sec, Shanghai 200433, Peoples R China.;Shanghai Inst Adv Commun & Data Sci, Shanghai 200433, Peoples R China.
摘要:
A polynomial f(x)∈ F_q[x] is called a permutation polynomial(PP)over the finite field Fq if the associated mapping f:c 7→ f(c)from Fq to itself is bijective.A PP f is called a complete permutation polynomial if f(x)+ x is a PP.PPs over finite fields of even characteristic have wide applications,including cryptography,coding theory,and communication theory.In many block ciphers with substitution-permutation network structure,the substitution box is usually a PP over F_(2~(2k))for some positive integer k.To resist the differential attacks,the differential uniformity of this polynomial should be as low as possible.However,finding such polynomials is difficult.Even for most known differentially low uniform permutations over F_(2~(2k)),their polynomial representations are difficult to obtain([1-8]).Thus far,only a few classes of differentially low uniform PPs over F_(2~(2k))of few terms have been constructed.Monomial permutations with Gold exponents 2~i +1,Kasami exponents 2~(2i)– 2~i + 1,Inverse exponents 2~n – 2,and the Bracken-Leander exponents 2~(2k)+ 2~k + 1 are differentially 4-uniform.Moreover,when k ≥ 5 is odd,monomials with exponents 2~(k+1)+ 3 and 2~k +2k+1/2 +1 were conjectured by Blondeau et al.and finally verified by Xiong et al.to be differentially 8-uniform permutations.A class of differentially 4-uniform permutation binomial,known as the Bracken-Tan-Tan function,was also determined.However,differentially low uniform permutation trinomials have not been found yet.