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Application of a microscopic optical potential of chiral effective field theory in (p, d) transfer reactions

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Nuclear Science and Techniques 2024年第1期35卷 134-144页

作者： Yi-Ping Xu Si-Lu Chen dan-yang pang School of Nuclear Science and Engineering North China Electric Power UniversityBeijing 102206China School of Physics Beihang UniversityBeijing 100191China

The microscopic global nucleon–nucleus optical model potential(OMP)proposed by Whitehead,Lim,and Holt,the WLH potential(Whitehead et al.,Phys Rev Lett 127:182502,2021),which was constructed in the framework of many-body per-turbation theory with state-of-the-art nuclear interactions from chiral effective field theory(EFT),was tested with(p,d)transfer reactions calculated using adiabatic wave *** target nuclei included both stable and unstable nuclei,and the incident energies reached 200 *** results were compared with experimental data and predictions using the phenomenological global optical potential of Koning and Delaroche,the KD02 ***,we found that the micro-scopic WLH potential described the(p,d)reaction angular distributions similarly to the phenomenological KD02 potential;however,the former was slightly better than the latter for radioactive *** average,the obtained spectroscopic factors(SFs)using both microscopic and phenomenological potentials were similar when the incident energies were below approxi-mately 120 ***,their difference tended to increase at higher incident energies,which was particularly apparent for the doubly magic target nucleus 40Ca.

关键词： Microscopic optical model potential (p,d)transfer Spectroscopic factors

Systematic CDCC calculations for ~11Be+p elastic scattering

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Science China(Physics,Mechanics & Astronomy) 2016年第3期59卷 70-74页

作者： Jie Chen Jian Ling Lou dan yang pang Yan Lin Ye School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University School of Physics and Nuclear Energy Engineering Beihang University

Continuum discretised coupled-channels （CDCC） method with a 10Be（0＋）＋ n two-body cluster model is applied to systematically analyze the elastic scattering of the halo nucleus alBe from the proton target at various incident energies below 100 MeV/nucleon. Using the renormalized 10Be-p potential deduced from the 10Be ＋ p elastic scattering data, the differential cross sections of 11 Be ＋ p scattering are well reproduced by the CDCC calculations without any further adjustment parameters, demonstrating the applicability of this approach for describing the scattering of exotic nuclei based on the scattering of the less exotic core nuclei.

关键词： elastic scattering CDCC 11Be

Experimental study of intruder components in light neutron-rich nuclei via single-nucleon transfer reaction

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Nuclear Science and Techniques 2020年第2期31卷 82-112页

作者： Wei Liu Jian-Ling Lou Yan-Lin Ye dan-yang pang School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China School of Physics Beijing Key Laboratory of Advanced Nuclear Materials and PhysicsBeihang UniversityBeijing 100191China

With the development of radioactive beam facilities,studies concerning the shell evolution of unstable nuclei have recently gained *** components,particularly s-wave intrusion,in the low-lying states of light neutron-rich nuclei near N=8 are of importance in the study of shell *** use of single-nucleon transfer reactions in inverse kinematics has been a sensitive tool that can be used to quantitatively investigate the single-particle orbital component of selectively populated *** spin-parity,spectroscopic factor(or single-particle strength),and effective singleparticle energy can all be extracted from such *** observables are often useful to explain the nature of shell evolution,and to constrain,check,and test the parameters used in nuclear structure *** this article,the experimental studies of the intruder components in lowlying states of neutron-rich nuclei of He,Li,Be,B,and C isotopes using various single-nucleon transfer reactions are *** focus is laid on the precise determination of the intruder s-wave strength in low-lying states.

关键词： Single-nucleon transfer reaction Intruder component Light neutron-rich nuclei

Improved eikonal approach for charge exchange reactions at intermediate energies

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Chinese Physics C 2019年第12期43卷 83-89页

作者： Jing-Jing Li dan-yang pang Yan-Lin Ye Jian-Ling Lou Xiao-Fei yang yang Liu Biao yang School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China

In order to describe charge exchange reactions at intermediate energies,we implemented as a first step the formulation of the normal eikonal *** calculated differential cross-sections based on this approach deviated significantly from the conventional DWBA calculations for CE reactions at 140 MeV/***,improvements were made in the application of the eikonal approximation so as to keep a strict three-dimensional form *** results obtained with the improved eikonal approach are in good agreement with the DWBA calculations and with the experimental *** the improved eikonal approach can be formulated in a microscopic way,it is easy to apply to CE reactions at higher energies,where the phenomenological DWBA is a priori difficult to use due to the lack,in most cases,of the required phenomenological potentials.

关键词： eikonal approximation Improved Eikonal Approach intermediate energies charge exchange reactions DWBA

Quenching of single-particle strengths of carbon isotopes 9-12,14-20C with knockout reactions for incident energies 43–2100 MeV/nucleon

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Chinese Physics C 2022年第6期46卷 147-153页

作者： Yi-Ping Xu dan-yang pang Cen-Xi Yuan Xiao-Yan Yun School of Nuclear Science and Engineering North China Electric Power UniversityBeijing 102206China School of Physics Beihang UniversityBeijing 100191China Sino-French Institute ofNuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China

To study the quenching of single-particle strengths of carbon isotopes,a systematic analysis is performed for ^(9-12,14-20) C,with single neutron knockout reactions on Be/C targets,within an energy range from approximately 43 to 2100 MeV/nucleon,using the Glauber *** energies do not show any obvious effect on the resulting values across this wide energy *** extracted quenching factors are found to be strongly dependent on the proton-neutron asymmetry,which is consistent with the recent analysis of knockout reactions but is inconsistent with the systematics of transfer and quasi-free knockout reactions.

关键词： spectroscopic factors knockout reactions reduced single-particle strength one-neutron removal

New determination of astrophysical14C（n, γ）15C reaction rate from the spectroscopic factor of 15C

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Science China(Physics,Mechanics & Astronomy) 2020年第1期63卷 118-121页

作者： TianLi Ma Bing Guo dan yang pang ZhiHong Li Yi Su XinYue Li yangPing Shen YouBao Wang Yun Ju Li Jun Su ShengQuan Yan Sheng Zeng Gang Lian Ding Nan WeiPing Liu Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China

The14C(n,γ)15C reaction plays an important role in various astrophysical scenarios:(1)it is the slowest in the neutron induced CNO cycle which occurs in asymptotic giant branch(AGB)stars,and therefore controls this cycle[1];(2)it is one of the key reactions for predicting the primordial abundances of the heavy elements in the framework of inhomogeneous big-bang nucleosynthesis(IBBN)[2];(3)it is also important for the synthesis of heavier isotopes in neutrino driven wind scenarios for the r-process in core-collapse supernova(i.e.,Type-II supernova)explosions[3-5].

关键词： spectroscopic cycle asymptotic

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 32-38页

作者： Younong Li Li dan Jing Peng Qidong yang Fuqiang yang Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investigate the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyze ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a high consistency in the simulations,with both ENSO modulation and carbon flux variability showing an increasing trend in the *** higher the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the greater the increase in *** flux variability in the middle and low latitudes under SSP2-4.5 increases by 30.9%compared to historical levels during 1951-2000,while under SSP5-8.5 it increases by 58.2%.Further analysis suggests that ENSO influences mid-and low-latitude carbon flux variability primarily through *** occurrence may potentially be attributed to the increased responsiveness of gross primary productivity towards regional temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models

Experimental study of the elastic scattering of 10Be on 208Pb at the energy of around three times the Coulomb barrier

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Chinese Physics C 2020年第2期44卷 72-79页

作者： Fang-Fang Duan Yan-Yun yang dan-yang pang Bi-Tao Hu Jian-Song Wang Kang Wang Guo yang Valdir Guimarães Peng Ma Shi-Wei Xu Xing-Quan Liu Jun-Bing Ma Zhen Bai Qiang Hu Shu-Ya Jin Xin-Xin Sun Jia-Sheng Yao Hang-Kai Qi Zhi-Yu Sun School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100080China School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China School of Science Huzhou UniversityHuzhou 313000China Instituto de Física Universidade de Sãn PauloRua do Matão1371Sãn Paulo 05508-090SPBrazil Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China

Elastic scattering of 10Be on a 208Pb target was measured at ELab=127 MeV,which corresponds to three times the Coulomb *** secondary 10Be beam was produced at the Radioactive Ion Beam Line in Lanzhou of the Heavy-Ion Research Facility in *** angular distribution of elastic scattering in the 10 Be+208Pb system shows a typical Fresnel diffraction *** model analysis of the angular distribution was performed using the Woods-Saxon,double-folding and global *** the global potential,different density distributions were *** results indicate that different density distributions for the projectile induce distinct effects in the angular distribution.

关键词： elastic scattering radioactive ion beam angular distribution optical model density distribution

First proof-of-principle experiment with the post-accelerated isotope separator on-line beam at BRIF:measurement of the angular distribution of ^(23)Na+^(40)Ca elastic scattering

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Nuclear Science and Techniques 2021年第5期32卷 101-106页

作者： Wei Nan Bing Guo Cheng-Jian Lin Lei yang Dong-Xi Wang yang-Ping Shen Bing Tang Bao-Qun Cui Tao Ge Yin-Long Lyu Hui-Ming Jia Yun-Ju Li Chen Chen Li-Hua Chen Qi-Wen Fan Xin-Yue Li Gang Lian Jian-Cheng Liu Tian-Peng Luo Nan-Ru Ma Rui-Gang Ma Xie Ma Ying-Jun Ma Wei-Ke Nan dan-yang pang You-Bao Wang Pei-Wei Wen Feng yang Yong-Jin Yao Sheng Zeng Hao Zhang Fu-Peng Zhong Shan-Hao Zhong Zhi-Hong Li Tian-Jue Zhang Wei-Ping Liu BRIF Collaboration China Institute of Atomic Energy(CIAE) P.O.Box 275(10)Beijing 102413China Department of Physics Guangxi Normal UniversityGuilin 541004China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China School of Physics Beihang UniversityBeijing 100191China Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China

The reaction dynamics of exotic nuclei near the drip line is one of the main research topics of current *** scattering is a useful probe for investigating the size and surface diffuseness of exotic *** development of rare isotope accelerators offers opportunities for such *** date,many relevant measurements have been performed at accelerators using the projectile fragmentation technique,while the measurements at accelerators using isotope separator on-line(ISOL)systems are still quite *** this work,we present the first proof-of-principle experiment with a post-accelerated ISOL beam at the Beijing Radioactive Ion Beam Facility(BRIF)by measuring the angular distribution of elastic scattering for the stable nucleus^(23)Na from the doubly magic nucleus^(40)Ca at energies above the Coulomb *** angular distribution measured by a silicon strip detector array in a scattering chamber using the ISOL beam at BRIF is in good agreement with that measured by the high-precision Q3 D magnetic spectrograph using the nonISOL beam at nearly the same *** work provides useful background for making BRIF a powerful tool for the investigation of the reaction dynamics of exotic nuclei.

关键词： BRIF Exotic nuclei Elastic scattering Angular distribution