检索结果-南通市图书馆

Spectroscopic factors of resonance states with the Gamow shell model

Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 38-45页

作者： Mengran Xie Jianguo Li Nicolas Michel Honghui Li Wei Zuo CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

We provide an investigation of the spectroscopic factor of resonance states in A=5-8 nuclei,utilizing the Gamow shell model(GSM).Within the GSM,the configuration mixing is taken into account exactly with the shell model framework,and the continuum coupling is addressed via the complex-energy Berggren ensemble,which treats bound,resonance,and non-resonant continuum single-particle states on an equal *** a result,both the configuration mixing and continuum coupling are meticulously considered in the *** first calculate the low-lying states of helium isotopes and isotones with the GSM,and the results are compared with that of ab initio no-core shell model(NCSM)*** results indicate that GSM can reproduce the low-lying resonance states more accurately than the *** this,we delve into the spectroscopic factors of the resonance states as computed through both GSM and NCSM,concurrently conducting systematic calculations of overlap functions pertinent to these resonance ***,the calculated overlap function and spectroscopic factor of6He(01+)■νp3/2→^(7)He(3/2_(1)-)with GSM are compared with the results from ab initio NCSM,variational Monte Carlo,and Green’s function Monte Carlo calculations,as well as available experimental *** results assert that wave function asymptotes can only be reproduced in GSM,where resonance and continuum coupling are precisely addressed.

关键词： spectroscopic factor overlap function resonance states continuum coupling isospin symmetry breaking

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fukui Functions for the Temporary Anion resonance states of Be^-, Mg^-, and Ca^-

引用

物理化学学报 2018年第3期34卷 263-269页

作者： MORRISON Robert C. Department of Chemistry East Carolina University

In this work,the Fukui functions of the two ~2P resonance states of Be,a ~2P resonance state of Mg~–,and a ~2D resonance state of Ca~– have been *** trajectories of these resonance states,in conjunction with the complex rotation of the Hamiltonian,were used to determine their wave *** electron densities,Fukui functions,and values of the hyper-radiuswere computed from these wave *** Fukui functions have negative regions in the valence shell in addition to the inner shell regions,indicating screening effects of the outer temporary *** configuration interactions with up to quadruple excitations were used along the trajectories and for computing the final wave *** on this data,the densities,Fukui functions,andwere calculated.

关键词： Fukui functions Density functional theory Temporary anion states resonance states Complex rotation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Double-heavy tetraquarks with strangeness in the chiral quark model

引用

Chinese Physics C 2023年第2期47卷 29-40页

作者：陈晓云王福来谭悦杨友昌 College of Science Jinling Institute of TechnologyNanjing 211169China School of Physical Science and Technology Lanzhou UniversityLanzhou 730000China Research Center for Hadron and CSR Physics Lanzhou UniversityLanzhou 730000China Institute of Modern Physics of CAS Lanzhou 730000China Department of Physics Yancheng Institute of TechnologyYancheng 224000China Guizhou University of Engineering Science Bijie 551700China Zunyi Normal University Zunyi 563000China

Recently,some progress has been made in the experiments on double-heavy tetraquarks,such as T_(cc)reported by the LHCb Collaboration and Xccssreported by the Belle *** on the heels of our previous work about T_(cc) and T_(bb), we present a study on the bound and resonance states of their companions,QQqs(Q=c,b;q=u,s) tetraquarks with strange flavor in the chiral quark *** pictures,meson-meson and diquark-antidiquark ones,and their couplings were considered in our *** violation was neglected *** numerical analysis indicated that the states ccus with 1/2(1^(+)) ald bbus with 1/2(1^(+)) are the most promising stable states against strong ***,we found several resonance states for the double-heavy strange tetraquarks with the real scaling method.

关键词： quark model tetraquarks resonance states

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tight—binding calculation of the electronic states of bulk—terminated GaAs（311）A and B surfaces

引用

Chinese Physics B 2002年第1期11卷 58-65页

作者：贾瑜马丙现等 StatekeyLaboratoryofmaterialsPhysics ZhengzhouUniversityZhengzhou450052China

We have carried out theoretical investigations on the electronic structure of GaAs(311)A and GaAs(311)B sur-faces. The bulk electronic structure of GaAs has been described by the second-neighbour tight-binding formalism andthe surface electronic structure was evaluated via an analytic Green function method. First, we present the surfaceband structure together with the projected bulk band of both Ga-terminated and As-terminated for GaAs(311)A andGaAs(311)B surfaces, respectively. In each case, the number of surface states is determined, and the localized surfacefeatures and orbitproperties of these surface states along -Y-S-X- high symmetry lines of the surface Brillouinzone are discussed. For the Ga-terminated GaAs(311)A (1×1) surface, we have tested two possible structure models,i.e. 'the bridge site' and 'the hollow site' models. In comparison with the angle-resolved photoelectron spectroscopystudied recently, the results have shown that the surface electronic states of the hollow site model are in good agreementwith the experiments, whereas those of the bridge site model are not. So we have concluded that the hollow site modelis favourable for the Ga-terminated GaAs(311) (1× 1) surface and the bridge site model should be excluded.

关键词： tight-binding calculation high-index crystal surface surface states resonance states

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

苯硫酚光解的三维波包动力学理论研究（英文）

苯硫酚光解的三维波包动力学理论研究（英文）

引用

第十五届全国化学动力学会议

作者：林广双木 Daiqian Xie Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical EngineeringNanjing University

Aromatic molecules with dissociative X-H（X=N,O,S,etc） stretch coordinate always hold a conical intersection between the repulsive electronic excited state and ground state along the X-H vibrational *** radical products are generated with distinct alignment of intramolecular orbital through hydrogen atom *** and substituted thiophenol are paradigms to investigate the dynamics of non-radiative transition of electronic excited *** constructed a three-dimensional diabatic potential energy surface including the S-H stretch,C-S-H bending and C-C-S-H torsional *** wavepacket dynamics were performed with the method of second-order split *** the absorption cross section of state and evolution of diabatic electronic population for the three states as function of time gave a short lifetime of the first excited state,which makes a qualitative agreement with the previous experiment *** branching ratios of thiophenoxyl products were obtained by flux analysis at the S-H bond length of 10 *** 50000 ***’s *** excited product was achieved without any vibrational coordinates excited in the initial *** result was consistent with the up-to-date *** obvious peaks appears in the X/A branching ratios as function of excitation energies above *** wavefuntion calculated in the specific energy shows a resonance state *** is possible to control the product branching ratios and the corresponding structure-based stereo reactions by choosing a specific excitation energy.

关键词： wavepacket dynamics resonance states diabatic short lifetime

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：