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| 1 | Designing of the 14 MeV neutron moderator for BNCT显示文摘In boron neutron capture therapy(BNCT),the ratio of the fast neutron flux to the neutron flux in the tumor(RFNT) must be less than 3%.If a D-T neutron generator is used in BNCT,the 14 MeV neutron moderator must be optimized to reduce the RFNT.Based on the neutron moderation theory and the simulation results,tungsten,lead and diamond were used to moderate the 14 MeV neutrons.Satisfying RFNT of less than 3%,the maximum neutron flux in the tumor was achieved with a three-layer moderator comprised of a 3cm thick tungsten layer,a 14cm thick lead layer and a 21cm thick diamond layer. | 程道文 陆景彬 杨东 刘玉敏 王辉东 马克岩 | 2012 | Chinese Physics C2012，36，9： | 4 |
| 2 | 基于简化基因组测序的永登七山羊遗传多样性分析显示文摘旨在通过简化基因组测序(specific-locus amplified fragment sequencing,SLAF-seq)技术分析永登七山羊群体遗传多样性和群体结构,为永登七山羊作为新发现资源申报提供支撑。本研究以甘肃省4个地方绵羊群体(每个群体随机选取10只成年健康母羊)作为研究对象,利用SLAF技术检测全基因组范围内的单核苷酸多态性位点(SNPs)。通过perl编程计算观测杂合度(Ho)、期望杂合度(He)、多态信息含量(PIC)、香浓维纳指数(SHI)和基因多样性指数(Nei)等5个遗传多样性指标;PopLDdecay软件分析每个品种连锁不平衡情况;elgensoft软件进行主成分分析(PCA);mega x软件构建4个绵羊品种的系统发育树;structure软件进行群体遗传结构分析;gcta软件进行亲缘关系分析。结果表明,40只绵羊个体共检测到1658596个SNPs位点,其中大部分SNPs位点位于基因间区域。永登七山羊群体Ho、He、PIC、SHI、Nei指标值分别为0.082、0.277、0.221、0.411和0.305,且永登七山羊的连锁不平衡系数较高,衰减速度较慢,说明永登七山羊群体遗传多样性低;永登七山羊与滩羊、兰州大尾羊和岷县黑裘皮羊之间的遗传分化系数(F_(st))分别为0.0906、0.0980和0.1045,表明永登七山羊与其他3个品种之间分化程度较高;PCA显示,群体间聚类模式差异明显,可将永登七山羊与兰州大尾羊、滩羊和岷县黑裘皮羊区分开;系统发育树结果表明,兰州大尾羊独自聚为一大支,永登七山羊和滩羊聚为另一大支,亲缘关系较近,随后永登七山羊逐渐分离出来独自聚为一小支;structure分析表明,K=2为最优分群数,即4个群体来自两个原始祖先,随着K值逐渐增加,部分永登七山羊个体发生分离,与其他品种遗传背景差异明显。亲缘关系热图显示,每个亚群个体之间亲缘关系较低。结果提示,永登七山羊与兰州大尾羊群体遗传多样性低,永登七山羊与滩羊、兰州大尾羊和岷县黑裘皮羊之间分化明显,这为进一步挖掘永登七山羊种质资源特性提供了理论数据。 | 马克岩 韩金涛 白雅琴 李讨讨 马友记 | 2023 | 畜牧兽医学报2023，54，5： | 4 |
| 3 | 快中子活化法测量放射性核素半衰期显示文摘半衰期是放射性核素的重要特征之一,每种放射性核素都有着它特有的半衰期,因而测定半衰期就成了鉴别放射性核素的一种方法。本文中使用快中子活化法,使用一定能量和通量的快中子,辐照样品与靶原子核发生核发应,产生短期放射性核素,记录放射性核素衰变时产生的特定能量的特征γ射线计数,根据计数随时间的衰减规律,测量放射性核素的半衰期。 | 许可 马克岩 许旭 梁桁楠 | 2018 | 大学物理实验2018，31，6： | 3 |
| 4 | CCD探测器的相对探测效率标定显示文摘探测器的探测效率是表征探测器性能的一个重要参数,需对其进行标定。本次试验使用复旦大学EBIT设备,以其配有的高纯锗探测器为标准,对低能X射线望远镜的CCD探测器进行探测效率的相对标定,得到在6.7、8.3、9.1、9.7、10.4、11.9和13.3 keV七个能量点CCD探测器相对于高纯锗探测器的探测效率。其讨论使用的标定方法对今后的探测效率标定工作具有意义。 | 刘晓艳 杨彦佶 朱玥 常治 肖君 陆景彬 王于仨 崔苇苇 姚科 傅云清 陈田祥 王娟 霍嘉 韩大炜 李炜 胡渭 李茂顺 陆波 张艺 张子良 薛荣峰 刘苗 迟林祥 马克岩 陈勇 | 2016 | 核电子学与探测技术2016，36，2： | 1 |
| 5 | ^(238)Pu低能光子源衰变γ能谱识别显示文摘利用同轴P型高纯锗探测器,对X荧光分析的^(238)Pu低能光子源进行γ能谱分析,并对^(233)Pa、^(224)Ra、^(212)Pb、^(212)Bi及^(208)Tl的特征γ射线进行分析,确定上述核素的来源。其中,^(233)Pa是生产^(238)Pu的原料237 Np的衰变产物,^(224)Ra、^(212)Pb、^(212)Bi及^(208)Tl均为生产^(238)Pu的副产物^(236)Pu的衰变子核。能量为350、440、844、1 014、1 130、1 266、1 368、1 454keV的γ射线是α粒子轰击源封装材料引起原子核库伦激发或γ射线照射周边环境引起核激发产生。进行效率刻度后,使用γ能谱法计算各放射性核素的活度,并根据放射性平衡计算各放射性核素的质量。通过对^(238)Pu源γ能谱的分析,建立计算放射性同位素活度与质量的方法。 | 许旭 刘佳强 陆景彬 刘玉敏 马克岩 杨东 刘运祚 | 2017 | 同位素2017，30，4： | 1 |
| 6 | 放射源^(152)Eu的能谱识别及和峰特性分析显示文摘使用低本底高纯锗(HPGe)探测器测量放射源^(152)Eu的γ能谱,识别能谱中出现的所有峰,分辨出干扰峰,并对和峰的特性进行分析,结合计数率随距离变化曲线以及通过分辨率比较和峰与特征峰的差异,为和峰的辨别提供判据。在和峰效应引起的全能峰计数率减少的情况下,修正各全能峰计数率,计算放射源中^(154)Eu杂质含量,结果显示,与修正前差异较明显,表明在能谱分析尤其是考查全能峰强度数据时,需要进行符合相加修正。 | 许旭 刘佳强 陆景彬 刘玉敏 赵龙 张伟 龚亚林 马克岩 杨东 刘运祚 | 2018 | 同位素2018，31，1： | 1 |
| 7 | A digital CDS technique and its performance testing显示文摘Readout noise is a critical parameter for characterizing the performance of charge-coupled devices(CCDs), which can be greatly reduced by the correlated double sampling(CDS) circuit. However, a conventional CDS circuit inevitably introduces new noise since it consists of several active analog components such as operational amplifiers. This paper proposes a digital CDS circuit technique, which transforms the pre-amplified CCD signal into a train of digital presentations by a high-speed data acquisition card directly without the noisy CDS circuit,then implements the digital CDS algorithm through a numerical method. A readout noise of 3.3 e- and an energy resolution of 121 e V@5.9 ke V can be achieved via the digital CDS technique. | 刘晓艳 陆景彬 杨彦佶 陆波 王于仨 徐玉朋 崔苇苇 李炜 李茂顺 王娟 韩大炜 陈田祥 霍嘉 胡渭 张艺 朱玥 张子良 尹国和 王宇 赵仲毅 付艳红 张娅 马克岩 陈勇 | 2015 | Chinese Physics C2015，39，7： | 1 |
| 8 | 激光对光伏电池辐照效应的波段性研究显示文摘为了研究激光对光伏电池辐照效应的波段性,搭建了激光辐照下光伏电池输出特性测量平台,采用位于波段内外的2种波长激光对3种光伏电池的辐照效应进行了实验分析。首先,测量了光伏电池短路电流、开路电压、峰值功率、填充因子及转换效率等随激光功率和波长的变化关系。然后,分析了激光功率和波长对光伏电池输出特性的影响规律。最后,提出了光伏电池转换效率的优化方法。结果表明:铟镓砷电池的转换效率高于传统的硅电池和砷化镓电池,当激光功率为0.405 W时,转换效率达到最大约为54.5%,满足空地、空空、地面等多种激光无线能量传输应用场合的重大需求。 | 李晓伟 马克岩 | 2018 | 光电子技术2018，38，3： | 0 |
| 9 | Lifetime measurement for the 2^+1 state in^106Cd显示文摘The lifetime of the 2^+1 state in ^106Cd populated via the ^94Zr(^16O,4n)^106Cd reaction has been measured with the Recoil Distance Doppler Shift technique in combination with the Differential Decay Curve Method.By subtracting the contamination in the data,the mean lifetime of the I^π=2^+1633 keV state was determined as 9.9(12)ps.The B(E2)value calculated in this study is in good agreement with the experimental systematics and was compared to the shell model calculations. | 钟健 马英君 吴晓光 朱保吉 李聪博 李广生 郑云 陈启明 贺创业 邓利涛 周文奎 马克岩 杨东 郭昊 王佳琦 管弦 孙吉 孙慧斌 胡世鹏 甘林 赵海歌 罗奇 吴正新 | 2020 | Chinese Physics C2020，44，9： | 0 |
| 10 | Proton irradiation effect on SCDs显示文摘The Low Energy X-ray Telescope is one of the main payloads on the Hard X-ray Modulation Telescope satellite.Swept charge devices(SCDs)are selected as detectors for the Low Energy X-ray Telescope.As SCDs are sensitive to proton irradiation,irradiation tests were carried out on the HI-13 accelerator at the China Institute of Atomic Energy.The beam energy was measured to be 10 MeV at the SCD.The proton fluence delivered to the SCD was 3×108protons/cm2over two hours.By comparing the performance before and after irradiation,it is concluded that proton irradiation affects both the dark current and the charge transfer inefficiency of the SCD.The energy resolution of the proton-irradiated SCD is 212 eV@5.9 keV at-60?C,while it before irradiated is 134 eV.Moreover,better performance can be reached by lowering the operating temperature of the SCD in orbit. | 杨彦佶 陆景彬 王于仨 陈勇 徐玉朋 崔苇苇 李炜 李正伟 李茂顺 刘晓艳 王娟 韩大炜 陈田祥 李承奎 霍嘉 胡渭 张艺 陆波 朱玥 马克岩 吴帝 刘琰 张子良 尹国和 王宇 | 2014 | Chinese Physics C2014，38，8： | 0 |
| 11 | High-Spin Level Scheme of^(120)I显示文摘Excited states in^(120)I are investigated utilizing in-beam gamma-ray spectroscopy following the^(114)Cd(^(11)B,5n)reaction at 70 MeV bombarding energy.A level scheme is constructed with states up to 9 MeV.The levels are classified into several bands and their possible configurations at low spins are discussed briefly.Based on the linking transitions between different bands at higher spins,the excitation energy of the previously reported T1/2=53 min isomer is ascertained to be 72 keV.Evidence showing the existence of an isomer at an excitation energy of 6.4 MeV is presented. | 李黎 孙吉 李剑 于德洋 刘弓冶 张为天 马克岩 杨东 马英君 吴晓光 竺礼华 贺创业 郑云 姚顺和 李聪博 胡世鹏 曹雪鹏 汪金龙 于蓓蓓 | 2013 | Chinese Physics Letters2013，30，6： | 0 |
| 12 | Multi-quasiparticle excitations and the impact of the high-j intruder orbital in the N=51^93 Mo nucleus显示文摘The level structures of 93 Mo are investigated using Large Scale Shell Model calculations,and reasonable agreement is obtained between the experimental and calculated values.The calculated results show that the lower-lying states are mainly dominated by proton excitations from the If5/2,2 p3/2,and 2 p1/2 orbitals into the higher orbitals across the Z=38 or Z=40 subshell closure.For the higher-spin states,multi-particle excitations,including the excitation of 2 d5/2 neutrons across the N=56 subshell closure into the high-j intruder 1 h11/2 orbital,are essential.Moreover,the previously unknown spin-parity assignments of the six higher excited states in 93 Mo are inferred from the shell model calculations. | 王豪 马克岩 吴义恒 吕翌丰 潘昊楠 陆景彬 | 2021 | Chinese Physics C2021，45，1： | 0 |
| 13 | 绵羊TGF-β1在临床型乳腺炎乳腺组织中的表达显示文摘转化生长因子β1受体(transforming growth factor-β 1,TGF-β1)是CD14单核细胞中的生存因子,当TGF-β1缺失时CD14单核细胞迅速执行凋亡程序。然而,目前有关TGF-β1基因在绵羊乳腺炎发生过程中的调控机制尚不清楚。为研究TGF-β1基因在患临床型乳房炎绵羊乳腺组织中的表达差异,本试验使用NCBI网站已公布的绵羊TGF-β1基因CDS序列,运用生物信息学分析方法对该基因生物学特征进行预测。通过qRT-PCR、Western blot检测健康和临床型乳腺炎绵羊乳腺组织中TGF-β1 mRNA及蛋白的表达,并使用免疫组织化学染色确定该蛋白在绵羊乳腺组织内分布情况。生物信息学分析结果表明,绵羊TGF-β1蛋白为疏水性不稳定蛋白,属于分泌蛋白,不同物种间保守性较高。qRT-PCR与蛋白免疫印迹结果显示,在健康和临床型乳腺炎乳腺组织中均存在TGF-β1基因的表达,且TGF-β1 mRNA与蛋白相对表达量均极显著(P<0.01)高于健康组。免疫组织化学结果显示,TGF-β1蛋白在临床型乳腺炎乳腺组织中均强烈表达于基质细胞和乳腺上皮细胞。由此推测可能是由于TGF-β1基因表达上调,导致患临床型乳腺炎乳腺组织中基质细胞与乳腺上皮细胞中炎症反应加剧。这为进一步研究TGF-β1基因在绵羊乳腺炎发病机制中的调控作用提供基础信息。 | 马克岩 尹德恩 马友记 | 2023 | 中国兽医学报2023，43，7： | 0 |
| 14 | 放射源^(226)Ra和^(133)Ba的衰变γ能谱分析显示文摘采用p型同轴高纯锗探测器测量含^(226) Ra的荧光仪表盘与标准源^(133) Ba的衰变γ能谱,并分析特征γ射线的能量和强度.结果表明:^(226) Ra能谱中出现^(226) Ra的特征γ射线及大量^(226) Ra的衰变子核的特征γ射线;^(133)Ba谱中出现^(133)Ba特征射线及大量和峰,由计数率随距离变化关系及γ射线级联关系证明存在和峰. | 许旭 常艺 陆景彬 刘佳强 马克岩 唐婉月 | 2018 | 吉林大学学报(理学版)2018，56，4： | 0 |
| 15 | 基于壳模型分析^(94)Tc能级结构显示文摘利用NUSHELLX球形壳模型程序,考虑两种不同组态空间下^(94)Tc的能级结构.计算结果表明,^(94)Tc的正宇称自旋态激发机制主要为p1/2轨道质子跨越Z=40亚壳向高jg9/2轨道跃迁,(f_(5/2),p_(3/2))轨道质子跨越Z=38闭壳向(p1/2,g9/2)轨道激发,负宇称自旋态为d5/2轨道中子跨越N=56亚壳向(g7/2,h11/2)轨道激发. | 吴义恒 杨东 马克岩 罗朋威 程飞 | 2018 | 吉林大学学报(理学版)2018，56，6： | 0 |
| 16 | High-k Structures in (124)~Cs显示文摘High spin states in the odd-odd nucleus 124 Cs have been investigated through the fusion-evaporation reaction 116 Sn(11 B,3n) 124 Cs with a beam energy of 45 MeV.A new rotational band is established and assigned as the high-k configuration of πg 9/2 [404]9/2 +νh 11/2 [523]7/2.Some structures linking to this band have also been observed.According to the results of the excitation energy systematics,the lowest level of this band is assigned as 9,and the 8 isomer bandhead has not been observed.Another isomer with a half life of 6.3 s has also been observed with its new decay paths established.Its excitation energy is raised by 79 keV,but its I π is not changed. | 杨东 陆景彬 刘运祚 马克岩 王辉东 王烈林 刘弓冶 李黎 马英君 竺礼华 吴晓光 李广生 贺创业 | 2012 | Plasma Science and Technology2012，14，7： | 0 |
| 17 | Magnetic Dipole Band in ^(113)In显示文摘High spin states in the odd-A nucleus 113In have been investigated using the re-action 110Pd(7Li,4n) at a beam energy of 50 MeV. A new positive parity dipole band with the configuration of π(g9/2)-1ν(h11/2)2ν(g7/2)2 is established. The effective interaction V(θ) values of this band have been successfully described by a semiclassical geometric model based on shear mechanism, which show that the dipole band has the characteristics of magnetic rotation. In addition the collective rotational angular momentum for this band is extracted. The results show that the core contribution increases gradually with the increase of the rotation frequency. | 马克岩 杨东 陆景彬 王烈林 王辉东 刘运祚 刘弓冶 李黎 马英君 杨森 刘珊 竺礼华 吴晓光 李广生 贺创业 李雪琴 | 2012 | Plasma Science and Technology2012，14，5： | 0 |
| 18 | Doublet bands in ^(128)La and systematic features of energy separationof doublet bands observed in the A~130 mass region显示文摘High spin states of 128La have been studied through the fusion-evaporation reaction 118Sn(14N,4n) 128La at a beam energy of 69 MeV. A positive-parity side band with the same configuration as that of the yrast band has been identified. Moreover, it is noted that the energy separation △E(I) = E(I)side-E(I)yrast of all doublet bands reported in odd-odd nuclei in the A~130 mass region exhibit a staggering pattern systematically, and they stagger up at even-spin and stagger down at odd-spin. | 马克岩 陆景彬 杨东 王辉东 刘运祚 李剑 刘弓冶 李黎 马英君 吴晓光 李广生 郑云 贺创业 | 2013 | Chinese Physics C2013，37，4： | 0 |
| 19 | Yrast Band in^(122)I and Band Termination显示文摘High spin states of the odd-odd nucleus 122 I have been investigated via the fusion-evaporation reaction 116 Cd(11B, 5n) at a beam energy of 68 MeV. The yrast band is extended up to Iπ=(29+). The band termination at Iπ=(22+) reported in previous studies is confirmed and interpreted as arising from a shape change from collective prolate to noncollective oblate according to Total-Routhian-Surface (TRS) calculations. In addition, the Iπ=(29+) state is assigned to the [πh11/2(πg7/2)2]23/2-[(νh11/2)3(νd5/2)2]35/2-configuration corresponding to the full alignment of all valance nucleons outside the semi-closed shell. | 刘弓冶 李黎 李险峰 马英君 赵延新 杨东 李聪博 马克岩 于德洋 杨彦佶 陆景彬 竺礼华 吴晓光 贺创业 郑云 王烈林 郝昕 李广生 | 2012 | Plasma Science and Technology2012，14，5： | 0 |
| 20 | Clarification of Confusion in Level Scheme of ^124Cs显示文摘 | 杨东 陆景彬 刘运祚 王烈林 马克岩 杨传顶 韩德凯 赵延新 马英君 竺礼华 吴晓光 李广生 | 2009 | Chinese Physics Letters2009，26，8： | 0 |
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