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use of two fungal species to induce agarwood resin formation in Gyrinops walla

Journal of Forestry Research 2019年第2期30卷 721-726页

作者： s.m.c.u.p.subasinghe H.I.D.Hitihamu K.m.E.p.Fernando Department of Forestry and Environmental science University of Sri Jayewardenepura Department of Botany University of Sri Jayewardenepura

Gyrinops walla Gaertn. is the only species growing in sri Lanka that belongs to the agarwood family,Thymelaeaceae. Although agarwood resin induction and extraction from Aquilaria species of the same family have been practised for many decades in southeast Asian region,the ability of producing agarwood resins in G. walla was discovered recently. since previous studies were on agarwood resins formed due to natural causes, the present study was conducted to identify the potential fungal species that are capable of artificially inducing agarwood resin formation in G. walla. since this is the first ever study conducted on artificial inducement of agarwood resin formation in ***, Aspergillus niger and Fusarium solani were selected owing to their high abundance in the naturally formed agarwood resinous tissues collected from 25 G. walla *** fungal species were separately grown in yeast extract glucose agar and used to inoculate healthy G. walla trees under aseptic conditions. Three holes were made for each tree and 2 g of fungal culture including the medium were placed in each hole. Tissue discoloration, characteristic aroma, resin content and resin constituents were checked at10 cm intervals above and below the inoculation points for a period of 1 year. Results revealed that tissue discoloration and resin content were higher in the trees inoculated with A. niger. Other than at 10 cm above and below the inoculation points, samples collected at all locations had significantly higher resin contents when inoculated with A. niger compared to F. solani. sixteen agarwood resin constituents, which were also recorded in Aquilaria species, were identified from the discolored tissues using Gc–ms analysis. Jinkohol, agarospirol and 2(2-phenyl)chromone derivatives were found in all discolored tissues collected at 10-cm intervals of the trees inoculated with both fungi. b-seline, c-eudesmol and valerenal were found in nine of 10 sample points on the stem. c-Elemene was recor

关键词： Gyrinops walla Agarwood resin Aspergillus niger Fusarium solani Inoculation

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Old-growth mixed dipterocarp forests show variable losses and gains in aboveground biomass and standing carbon over forty years

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Forest Ecosystems 2024年第1期11卷 14-23页

作者： sisira Ediriweera champika Bandara Tithira Lakkana shanika Jayasinghe David Woodbury Arun Dayanandan B.m.p.singhakumara Xiangcheng mi I.A.u.N.Gunatilleke c.V.s.Gunatilleke mark sAshton Department of science and Technology Uva Wellassa UniversityBadullaSri Lanka The Forest school Yale School of the EnvironmentYale UniversityNew HavenCT06511USA Department of Forestry and Environmental science University of Sri JayewardenepuraNugegodaSri Lanka state Key Laboratory of Vegetation and Environmental change Institute of BotanyChinese Academy of SciencesBeijing100093China Botany Department University of PeradeniyaPeradeniyaSri Lanka

Background:No studies have documented long-term trends in aboveground biomass(AGB)for mixed-dipterocarp forests(mDF),the dominant rain forest type in tropical wet equatorial *** our study,we sought to document such trends over forty years across three sites representing lowland to lower montane ***:To do this,we established fifty 100 m×25 m plots in 1978 across three sites sampled along an elevation gradient,identified as mature old-growth *** measured trees for diameter at breast height that we identified to species and *** took wood samples to calculate species wood-specific *** re-measured plots in 1998 and again in ***:We show standing AGB for all sites combined to be 517.52 mg·ha^(-1)in 1978,but this declined by 17%over 40 years to 430.11 mg·ha^(-1).No differences exist among sites in AGB primarily because of considerable within site variation;but interactions of time with site show declines across sites were not uniform,one remained about the *** few species represented a high proportion of the AGB with the top five species comprising between 34%and 65%,depending upon site and year *** species,mesua nagassarium,represented a disproportionately large amount of AGB and decline over time,particularly at the low elevation ***:Our results are directly relevant to estimating AGB and standing carbon sequestered in *** study is the first to demonstrate varying but overall,declining trends in amounts of AGB among forests making predictions of biomass and standing carbon in mDF difficult over wide regions.

关键词： Western ghats shorea spp. southeast Asia sri Lanka Tropical rain forest Wood specific gravity

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polio eradication surveillance in sri Lanka,2019-2023

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Asian pacific Journal of Tropical medicine 2024年第6期17卷 268-272页

作者： m.A.Y.Fernando N.s.madarasinghe c.Rangana N.Weerasinghe D.c.u.D.Weligamage J.I.Abeynayake Department of medical microbiology and Immunology Faculty of MedicineUniversity of ColomboSri Lanka Department of Virology Medical Research InstituteColombo 08Sri Lanka medical Research Institute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory surveillance carried out from January,2019 to may,2023 by the polio Regional Reference Laboratory,sri ***:This retrospective study analyzed all stool samples received under the acute flaccid paralysis(AFp)and immunodeficient vaccine-derived poliovirus(VDpV)surveillance at polio Regional Reference Laboratory,sri Lanka from January,2019 to may,*** results of the testing methodologies were extracted from the laboratory data system,i.e.,poliovirus virus isolation,intra-typic differentiation/VDpV real time reverse transcriptase polymerase chain reaction(ITD/VDpV rRTpcR)and sequencing,along with the data on timing of reporting results,stool adequacy and *** was analyzed using descriptive ***:A total of 2141 stool samples from 1644 cases were received for AFp surveillance from sri Lanka(93.61%),maldives(1.52%),and immunodeficient VDpV(4.86%)*** polioviruses(19/1644,1.15%)and non-polio enteroviruses(73/1644,4.44%)were isolated,while sabin-like 3 virus was detected in majority(12/19,63.15%)among the poliovirus *** polioviruses or circulating VDpVs were not detected among the *** all years of the study,the non-polio AFp detection rate was>1/100000 in children aged less than 15 years,whereas stool adequacy rate was>80%.All results were reported within 14 days of receipt,ensuring timely reporting as per global ***:The polio Regional Reference Laboratory,sri Lanka plays a vital role in maintaining the polio-free status in the country through its robust laboratory surveillance,while adhering to the surveillance ***-detection of wild polioviruses and circulating VDpV during the study period reinforces the polio-free status in the country.

关键词： poliovirus polio laboratory surveillance Regional reference laboratory polio eradication

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Hybrid-Vlasov simulation of soft X-ray emissions at the Earth’s dayside magnetospheric boundaries

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Earth and planetary physics 2024年第1期8卷 70-88页

作者： m.Grandin H.K.connor s.Hoilijoki m.Battarbee Y.pfau-Kempf u.Ganse K.papadakis m.palmroth Department of physics University of HelsinkiHelsinkiFinland NAsA Goddard space Flight center GreenbeltMD20771USA space and Earth Observation centre Finnish Meteorological InstituteHelsinkiFinland

solar wind charge exchange produces emissions in the soft X-ray energy range which can enable the study of near-Earth space regions such as the magnetopause,the magnetosheath and the polar cusps by remote sensing *** solar wind magnetosphere Ionosphere Link Explorer(smILE)and Lunar Environment heliospheric X-ray Imager(LEXI)missions aim to obtain soft Xray images of near-Earth space thanks to their soft X-ray Imager(sXI)*** earlier modeling works have already simulated soft X-ray images as might be obtained by smILE sXI during its mission,the numerical models used so far are all based on the magnetohydrodynamics description of the space *** investigate the possible signatures of ion-kinetic-scale processes in soft Xray images,we use for the first time a global hybrid-Vlasov simulation of the geospace from the Vlasiator *** simulation is driven by fast and tenuous solar wind conditions and purely southward interplanetary magnetic *** first produce global X-ray images of the dayside near-Earth space by placing a virtual imaging satellite at two different locations,providing meridional and equatorial *** then analyze regional features present in the images and show that they correspond to signatures in soft X-ray emissions of mirrormode wave structures in the magnetosheath and flux transfer events(FTEs)at the *** results suggest that,although the time scales associated with the motion of those transient phenomena will likely be significantly smaller than the integration time of the smILE and LEXI imagers,mirror-mode structures and FTEs can cumulatively produce detectable signatures in the soft X-ray *** instance,a local increase by 30%in the proton density at the dayside magnetopause resulting from the transit of multiple FTEs leads to a 12%enhancement in the line-of-sight-and time-integrated soft X-ray emissivity originating from this ***,a proton density increase by 14%in the magnetosheath

关键词： magnetosphere magnetosheath numerical simulation smILE LEXI soft X-ray emissions hybrid-Vlasov model polar cusp flux transfer events mirror-mode waves

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Radioisotope production using lasers:From basic science to applications

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matter and Radiation at Extremes 2024年第3期9卷 31-44页

作者： m.R.D.Rodrigues A.Bonasera m.scisciò J.A.pérez-Hernández m.Ehret F.Filippi p.L.Andreoli m.Huault H.Larreur D.singappuli D.molloy D.Raffestin m.Alonzo G.G.Rapisarda D.Lattuada G.L.Guardo c.Verona Fe.consoli G.petringa A.mcNamee m.La cognata s.palmerini T.carriere m.cipriani G.Di Giorgio G.cristofari R.De Angelis G.A.p.cirrone D.margarone L.Giuffrida D.Batani p.Nicolai K.Batani R.Lera L.Volpe D.Giulietti s.Agarwal m.Krupka s.singh Fa.consoli cyclotron Institute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly centro de Láseres pulsados(clpu) VillamayorSpain universidad de salamanca SalamancaSpain centre Lasers Intenses et Applications(cELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings pty FreshwaterNew South WalesAustralia school of mathematics and physics Queen’s University BelfastBelfastUnited Kingdom Dipartimento di Fisica e Astronomia“E.majorana ”Università di CataniaCataniaItaly Facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly Dipartimento di Ingegneria Industriale Universitàdi Roma“Tor Vergata”RomaItaly Dipartimento di Fisica e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETsIA Universidad Politécnica de MadridMadridSpain Dipartimento Fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZu–Institute of physics of czech Academy of sciences PragueCzech Republic Institute of plasma physics of czech Academy of sciences PragueCzech Republic

The discovery of chirped pulse amplification has led to great improvements in laser technology,enabling energetic laser beams to be compressed to pulse durations of tens of femtoseconds and focused to a few *** with energies of tens of meV can be accelerated using,for instance,target normal sheath acceleration and focused on secondary *** such conditions,nuclear reactions can occur,with the production of radioisotopes suitable for medical *** use of high-repetition lasers to produce such isotopes is competitive with conventional methods mostly based on *** this paper,we study the production of^(67)cu,^(63)Zn,^(18)F,and^(11)c,which are currently used in positron emission tomography and other *** the same time,we study the reactions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)Ga to put further constraints on the proton distributions at different angles,as well as the reaction^(11)B(p,α)^(8)Be relevant for energy *** experiment was performed at the 1 pW laser facility at VegaⅢin salamanca,*** distributions of radioisotopes in the forward(with respect to the laser direction)and backward directions were measured using a high purity germanium *** results are in reasonable agreement with numerical estimates obtained following the approach of Kimura and Bonasera[*** ***.,sect.A 637,164–170(2011)].

关键词： purity estimates backward

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Impact of sex on the outcomes of deceased donor liver transplantation

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World Journal of Transplantation 2024年第1期14卷 120-129页

作者： Oya m Andacoglu Isabel s Dennahy Nicole c mountz Luisa Wilschrey Arzu Oezcelik Division of Transplantation and Advanced Hepatobiliary surgery University of UtahSalt Lake CityUT 84112United States Department of surgery University of EssenEssen D-45122Germany Department of surgery The University of Oklahoma Health Sciences CenterOklahoma CityOK 73117United States Department of surgery University of Oklahoma College of MedicineOklahoma CityOK 73117United States

BAcKGROuND Data examining the impact of sex on liver transplant(LT)outcomes are *** is clear that further research into sex-related differences in transplant patients is necessary to identify areas for *** of these differences may help to identify specific areas of focus to improve on the organ matching process,as well as the peri-and post-operative care of these *** To utilize data from a high-volume Eurotransplant center to compare characteristics of male and female patients undergoing liver transplant and assess association between sex-specific variables with short-and long-term post-transplant *** A retrospective review of the university of Essen’s transplant database was performed with collection of baseline patient characteristics,transplant-related data,and short-term *** of these data were made with shapiro-Wilk,mann-Whitney u,χ2 and Bonferroni tests applied where appropriate.A p value ofs accepted as statistically *** Of the total 779 LT recipients,261(33.5%)were *** patients suffered higher incidences of acute liver failure and lower incidences of alcohol-related or viremic liver disease(p=0.001).Female patients were more likely to have received an organ from a female donor with a higher donor risk index score,and as a high urgency offer(all pseline characteristics of male and female recipients were also significantly *** multivariate hazard regression analysis,recipient lab-model for End-stage Liver Disease score and donor cause of death were associated with long-term outcomes in ***-operative diagnosis of hepatocellular carcinoma,age at time of listing,duration of surgery,and units transfused during surgery,were associated with long-term outcomes in *** of complications was associated with long-term outcomes in both *** survival was similar in both males and females;however,when stratified by age,females<50 y

关键词： Liver transplant Outcomes survival peri-and post-operative care

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Estimating the subsolar magnetopause position from soft X-ray images using a low-pass image filter

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Earth and planetary physics 2024年第1期8卷 173-183页

作者： Hyangpyo Kim Hyunju K.connor Jaewoong Jung Brian m.Walsh David sibeck Kip D.Kuntz Frederick s.porter catriana K.paw u Rousseau A.Nutter Ramiz Qudsi Rumi Nakamura michael collier space Research Institute Austrian Academy of Sciences8042 GrazAustria Geophysical Institute University of Alaska FairbanksFairbanksAlaska 99775USA National Aeronautics and space Administration(NAsA)Goddard space Flight center GreenbeltMaryland 20771USA Astronomy Department University of Maryland College ParkCollege ParkMaryland 20742USA center for space physics Boston UniversityBostonMassachusetts 02215USA Department of physics and Astronomy Johns Hopkins UniversityBaltimoreMaryland 21218USA Howard university WashingtonDC 20059USA

The Lunar Environment heliospheric X-ray Imager(LEXI)and solar wind magnetosphere Ionosphere Link Explorer(smILE)missions will image the Earth’s dayside magneto pause and cusps in soft X-rays after their respective launches in the near future,to specify glo bal magnetic reconnection modes for varying solar wind *** suppo rt the success of these scientific missions,it is critical to develop techniques that extract the magnetopause locations from the observed soft X-ray *** this research,we introduce a new geometric equation that calculates the subsolar magnetopause position(Rs)from a satellite position,the look direction of the instrument,and the angle at which the X-ray emission is *** assumptions are used in this method:(1)The look direction where soft X-ray emissions are maximized lies tangent to the magnetopause,and(2)the magnetopause surface near the subsolar point is almost spherical and thus Rsis nea rly equal to the radius of the magneto pause *** create synthetic soft X-ray images by using the Open Geospace General circulation model(OpenGGcm)global magnetohydrodynamic model,the galactic background,the instrument point spread function,and poisson *** then apply the fast Fourier transform and Gaussian low-pass filte rs to the synthetic images to re move noise and obtain accurate look angles for the soft X-ray pea *** the filte red images,we calculate Rs and its accuracy for different LEXI locations,look directions,and solar wind densities by using the OpenGGcm subsolar magnetopause location as ground *** method estimates Rs with an accuracy ofsolar wind density exceeds>10 *** accuracy improves for greater solar wind densities and during southward interplanetary magnetic *** method ca ptures the magnetopause motion during southwa rd interplaneta ry magnetic field ***,the technique will enable quantitative analysis of the magnetopause motion and help reveal the daysi

关键词： soft X-ray magnetopause reconnection low-pass filter LEXI smILE

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Ground-based and additional science support for smILE

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Earth and planetary physics 2024年第1期8卷 275-298页

作者： J.A.carter m.Dunlop c.Forsyth K.Oksavik E.Donovon A.Kavanagh s.E.milan T.sergienko R.c.Fear D.G.sibeck m.connors T.Yeoman X.Tan m.G.G.T.Taylor K.mcWilliams J.Gjerloev R.Barnes D.D.Billet G.chisham A.Dimmock m.p.Freeman D.-s.Han m.D.Hartinger s.-Y.W.Hsieh Z.-J.Hu m.K.James L.Juusola K.Kauristie E.A.Kronberg m.Lester J.manuel J.matzka I.mccrea Y.miyoshi J.Rae L.Ren F.sigernes E.spanswick K.sterne A.steuwer T.sun m.-T.Walach B.Walsh c.Wang J.Weygand J.Wild J.Yan J.Zhang Q.-H.Zhang planetary sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford Appleton Laboratory space Science Technology Facilities CouncilOxfordshireUK school of space and Environment Beihang UniversityBeijing 100191China Key Laboratory of space Environment monitoring and Information processing Ministry of Industry and Information TechnologyBeijing 100017China Department of space and climate physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK Birkeland centre for space science Department of Physics and Technology.University of BergenBergenNorway Department of physics and Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 British Antarctic survey CambridgeUK swedish Institute of space physics KirunaSweden West Highfield campus University of SouthamptonUniversity RoadSO171BJUK Goddard space Flight center NASAGreenbeltMarylandUSA Athabasca university AthabascaCanada EsTEc European Space AgencyNetherlands university of saskatchewan SaskatoonCanada The Johns Hopkins university Applied physics Laboratory LaurelMarylandUSA swedish Institude of space physics UppsalaSE 75121Sweden Tongji university Shanghai 200092China center for space plasma physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA polar Research Institute of china Shanghai 200136China Finnish meteorological Institute(FmI) Finland Department of Earth and Environmental sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany canadian space Agency MontrealCanada GFZ German Research centre for Geosciences PotsdamGermany Nagoya university Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 Northumbria university Newcastle upon TyneTyne and WearUK NE18ST National space science center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint European space Agency and chinese Academy of sciences solar wind magnetosphere Ionosphere Link Explorer(smILE)mission will explore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the Northern Hemisphere *** these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the smILE ***,we describe current community efforts to prepare for smILE,and the benefits and context various experiments that have explicitly expressed support for smILE can offer.A dedicated group of international scientists representing many different experiment types and geographical locations,the Ground-based and Additional science Working Group,is facilitating these *** include constructing an online smILE Data Fusion Facility,the discussion of particular or special modes for experiments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft *** anticipate growing interest and community engagement with the smILE mission,and we welcome novel ideas and insights from the solar-terrestrial community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupling ground-based experimentation smILE conjunctions missions

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Further investigation on the fusion of ^(6)Li with ^(209)Bi target at near-barrier energies

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chinese physics c 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 m.R.cortes 胡世鹏钱建强 D.mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov m.mazzocco A.Gozzelino c.parascandolo D.pierroutsakou m.La commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana s.Bakes I.Zanon s.Aydin G.de Angelis m.siciliano R.menegazzo s.m.Lenzi J.L.Ferreira J.Rangel serkan Akkoyun L.F.canto J.Lubian school of physics Beihang UniversityBeijing 100191China sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute for Advanced study in Nuclear Energy&safety Shenzhen UniversityShenzhen 518060China shenzhen Key Laboratory of Research and manufacture of High purity Germanium materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'universita di padova PadovaItaly state Key Laboratory of Radiation medicine and protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China china Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and material modification of ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INFN Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INFN Sezione di NapoliI-80126 NapoliItaly Dipartimento di Farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of Natural and mathematical sciences Faculty of EngineeringTarsus University33480 MersinTurkiye physics Division Argonne National LaboratoryLemont-ILUSA Departamento de matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the coulomb *** cross sections of(deuteron captured)incomplete fusion(IcF)products were re-quantified experimentally for this reaction *** results reveal that the IcF cross section is equivalent to that of complete fusion(cF)above the coulomb barrier and dominant near or below the coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(cDcc)method was performed for the aforementioned cF and IcF cross sections;the result is consistent with the *** universal fusion function(uFF)was also compared with the measured cF cross section for different barrier parameters,demonstrating that the cF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

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One-neutron stripping process in the^(209)Bi(^(6)Li,^(5)Li)^(210)Bi*reaction reaction

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Nuclear science and Techniques 2024年第6期35卷 120-129页

作者： Gao-Long Zhang Zhen-Wei Jiao Guang-Xin Zhang E.N.cardozo B.paes shi-peng Hu Jian-Qiang Qian Daniele mengoni Wei-Wei Qu cong-Bo Li Yun Zheng Huan-Qiao Zhang Hui-Bin sun Nan Wang chun-Lei Zhang J.J.Valiente-Dobón D.Testov m.mazzocco A.Gozzelino c.parascandolo D.pierroutsakou m.La commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana s.Bakes I.Zanon s.Aydin Gde Angelis m.siciliano R.menegazzo s.m.Lenzi s.Akkoyun L.F.canto J.Lubian school of physics Beihang UniversityBeijing 100191China sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340 NiteróiRio de JaneiroBrazil Laboratorio TANDAR Comisión Nacional de Energía AtómicaBKNA1650 San MartíınArgentina Institute for Advanced study in Nuclear Energy and safety Shenzhen UniversityShenzhen 518060China shenzhen Key Laboratory of Research and manufacture of High purity Germanium materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPaduaItaly Dipartimento di fisica Astronomia dell’universita di padova PaduaItaly state Key Laboratory of Radiation medicine and protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China china Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and material modification of ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Laboratori Nazionali di Legnaro INFN35020 LegnaroItaly INFN Sezione di Napoli80126 NaplesItaly Dipartimento di Farmacia Universitàdi Napoli“Federico II”80131 NaplesItaly Department of Natural and mathematical sciences Faculty of EngineeringTarsus University33480 MersinTurkey physics Division Argonne National LaboratoryLemontILUSA Department of physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroRio de Janeiro CP 6852821941-972Brazil

One-neutron stripping process between^(6)Li and^(209)Bi was studied at 28,30,and 34 meV using the in-beamγ-ray spectroscopy ***γ-γcoincident analysis clearly identified twoγ-rays feeding the ground and long-lived isomeric states,which were employed to determine the cross *** one-neutron stripping cross sections were similar to the cross sections of complete fusion in the^(6)Li+^(209)Bi system,but the one-neutron stripping cross sections decreased more gradually at the sub-barrier region.A coupled-reaction-channel calculation was performed to study the detailed reaction mechanism of the one-neutron stripping process in^(6)*** calculations indicated that the first excited state of 5 Li is critical in the actual one-neutron transfer mechanism,and the valence proton of 209Bi can be excited to the low-lying excited state in(^(6)Li,^(5)Li)reaction,unlike in the(d,p)reaction.

关键词： Transfer reaction Weakly bound nuclei cross section

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