1993年 第10卷 第3期
1993, 10(3): 2-6.
doi: 10.11804/NuclPhysRev.10.03.002
摘要:
本文介绍了HIRFL的工作状况和发展,简要报道了NLHIAL的科学活动,提出了建立与HIRFL配套的重离子冷却储存环(CSR)的设想。This paper reports on the current status of operation and development of the Heavy IonResearch Facility in Lanzhou (HIRFL), and introduces briefly the outline of the scientific activities inNLHIAL. In addition, a proposal concerning building a Cooler Storage Ring (CSR) for heavy ions incombination with HIRFL is presented.
本文介绍了HIRFL的工作状况和发展,简要报道了NLHIAL的科学活动,提出了建立与HIRFL配套的重离子冷却储存环(CSR)的设想。This paper reports on the current status of operation and development of the Heavy IonResearch Facility in Lanzhou (HIRFL), and introduces briefly the outline of the scientific activities inNLHIAL. In addition, a proposal concerning building a Cooler Storage Ring (CSR) for heavy ions incombination with HIRFL is presented.
1993, 10(3): 7-14.
doi: 10.11804/NuclPhysRev.10.03.007
摘要:
本文简介HIRFL上中、低能重离子物理基础和应用研究的主要进展;着重介绍三个方面的研究:中能HIC和热核性质的研究,远离稳定线核的合成和研究,重离子束应用,并概述近期实验研究规划的初步建议。 The experimental studies and achievements recently made at the Heavy Ion ResearchFacility of Lanzhou(HIRFL) are reviewed with an emphasis on the three research fields: the study of intermediate energy heavy ion collision and properties of hot nuclei, the synthesis and study of nucleifar from stability, and the applications of heavy ions. A research program for the near future is alsobriefly introduced.
本文简介HIRFL上中、低能重离子物理基础和应用研究的主要进展;着重介绍三个方面的研究:中能HIC和热核性质的研究,远离稳定线核的合成和研究,重离子束应用,并概述近期实验研究规划的初步建议。 The experimental studies and achievements recently made at the Heavy Ion ResearchFacility of Lanzhou(HIRFL) are reviewed with an emphasis on the three research fields: the study of intermediate energy heavy ion collision and properties of hot nuclei, the synthesis and study of nucleifar from stability, and the applications of heavy ions. A research program for the near future is alsobriefly introduced.
1993, 10(3): 15-18.
doi: 10.11804/NuclPhysRev.10.03.015
摘要:
兰州重离子研究装置(HIRFL)自1988年12月12日首次出束以来,先后引出五种重离子束流,供给实验终端调试及重离子物理、原子物理、核化学、生物学和材料科学的实验研究,束流发射度小于8πmmmrad,能散小于0.3％,束流强度为10~(11)～10~(12)PPS。1992年5月,10GHz的ECR离子源及其8m长束运线和轴向注入系统经调试投入运行,性能良好,同时,对注入器其它系统进行了大量的改进工作,改进后的SFC性能有很大提高。对主加速器SSC的真空、高频、控制等系统作了大量完善性改进工作。简要介绍HIRFL近三年运行情况. Scince the first C~(+) beam were extracted from HIRFL (Heavy Ion Research Facility ofLanzhou)on Dec. 12, 1988, C~(+) (50MeV/u, 7SMeV/u), O(+) (50MeV/u), Ne(+) (25MeV/u) Ar(15+)(25MeV/u)and other beams have been accelerated for the testing of the experimental terminals andthe experimental raserach on heavy ion nuclear physics, atomic physics, nuclear chemistry, biologyand material science. The beam emittance is less than 8π mm mrad and the energy spread is less than0.3%. The 10 GHz ECR ion...
兰州重离子研究装置(HIRFL)自1988年12月12日首次出束以来,先后引出五种重离子束流,供给实验终端调试及重离子物理、原子物理、核化学、生物学和材料科学的实验研究,束流发射度小于8πmmmrad,能散小于0.3％,束流强度为10~(11)～10~(12)PPS。1992年5月,10GHz的ECR离子源及其8m长束运线和轴向注入系统经调试投入运行,性能良好,同时,对注入器其它系统进行了大量的改进工作,改进后的SFC性能有很大提高。对主加速器SSC的真空、高频、控制等系统作了大量完善性改进工作。简要介绍HIRFL近三年运行情况. Scince the first C~(+) beam were extracted from HIRFL (Heavy Ion Research Facility ofLanzhou)on Dec. 12, 1988, C~(+) (50MeV/u, 7SMeV/u), O(+) (50MeV/u), Ne(+) (25MeV/u) Ar(15+)(25MeV/u)and other beams have been accelerated for the testing of the experimental terminals andthe experimental raserach on heavy ion nuclear physics, atomic physics, nuclear chemistry, biologyand material science. The beam emittance is less than 8π mm mrad and the energy spread is less than0.3%. The 10 GHz ECR ion...
1993, 10(3): 19-21.
doi: 10.11804/NuclPhysRev.10.03.019
摘要:
本文简述在中科院近物所HIRFL上发现的第一个新核素208Hg的合成和鉴别,兼论利用HIRFL提供的中能重离子束开展远离β稳定线核素合成和衰变研究的优势、困难以及拟采用的物理和技术路线。 The synthesis and identification of the first discovered new nuclide 208Hg on HIRFL(Heavy Ion Research Facility of Lanzhou) were described. In this paper the superiorities, difficultiesas well as the physical and technical line about the synthesis and decay study for the nuclides far fromβ-stability line to be made at HIRFL were discussed.
本文简述在中科院近物所HIRFL上发现的第一个新核素208Hg的合成和鉴别,兼论利用HIRFL提供的中能重离子束开展远离β稳定线核素合成和衰变研究的优势、困难以及拟采用的物理和技术路线。 The synthesis and identification of the first discovered new nuclide 208Hg on HIRFL(Heavy Ion Research Facility of Lanzhou) were described. In this paper the superiorities, difficultiesas well as the physical and technical line about the synthesis and decay study for the nuclides far fromβ-stability line to be made at HIRFL were discussed.
1993, 10(3): 22-25.
doi: 10.11804/NuclPhysRev.10.03.022
摘要:
本文讨论了46.7MeV/u~(12)C+~(58)Ni、~(115)Th、~(197)Au实验中双质子干涉的研究结果,研究了零寿命Koonin模型中核力、库仑力及费米统计对关联函数的影响,并从实验中提取了发射源的半径参数r_0,实验发现,r_0随着靶核质量的增加而增加,同时,还研究了发射源的大小与两个关联粒子的能量和E_1+E_2的关系,得出的r_0值随E_1+E_2的增加而减少,反映了高能质子主要来源于反应早期。 The results of the two-proton interferometry from experiment of 46.7 MeV/u ~(12)C+~(58)Ni, ~(115)In, ~(197)Au are discussed in this paper. Influences of nuclear force, coloumb force and fermistatistics on correlation function are investigated. It was found from experiment that the emissionsource radius increase with increasing of the target nuclei size, and decrease with increasing of the sumenergy of the two correlated protons, reflecting the high energy protons come from early stage of thereaction.
本文讨论了46.7MeV/u~(12)C+~(58)Ni、~(115)Th、~(197)Au实验中双质子干涉的研究结果,研究了零寿命Koonin模型中核力、库仑力及费米统计对关联函数的影响,并从实验中提取了发射源的半径参数r_0,实验发现,r_0随着靶核质量的增加而增加,同时,还研究了发射源的大小与两个关联粒子的能量和E_1+E_2的关系,得出的r_0值随E_1+E_2的增加而减少,反映了高能质子主要来源于反应早期。 The results of the two-proton interferometry from experiment of 46.7 MeV/u ~(12)C+~(58)Ni, ~(115)In, ~(197)Au are discussed in this paper. Influences of nuclear force, coloumb force and fermistatistics on correlation function are investigated. It was found from experiment that the emissionsource radius increase with increasing of the target nuclei size, and decrease with increasing of the sumenergy of the two correlated protons, reflecting the high energy protons come from early stage of thereaction.
1993, 10(3): 26-30.
doi: 10.11804/NuclPhysRev.10.03.026
摘要:
我们在HIRFL提供的46.7MeV/u的~(12)C离子轰击~(58)Ni、~(115)In和~(197)Au靶所引起的核反应中研究了弹核碎裂与转移反应的竞争,分别提取了对应于弹核碎裂和转移反应的类弹碎片的约化动量宽度,从粒子发射不稳定态的相对布居得到了不同反应系统的核温度参数。 The projectile fragmentation and its competition with the transfer reactions have beenstudied in the reactions induced by 46.7 MeV/u ~(12)C ion on the ~(58)Ni, ~(115)In and ~(197)Au targets. Thereduced momentum distribution widths of the projectile-like fragments for projectile fragmentationand transfer reactions were extracted from the experimental data respectively. The nuclear temperatureperameters were obtained from the relative populations of the unstable particle emission ...
我们在HIRFL提供的46.7MeV/u的~(12)C离子轰击~(58)Ni、~(115)In和~(197)Au靶所引起的核反应中研究了弹核碎裂与转移反应的竞争,分别提取了对应于弹核碎裂和转移反应的类弹碎片的约化动量宽度,从粒子发射不稳定态的相对布居得到了不同反应系统的核温度参数。 The projectile fragmentation and its competition with the transfer reactions have beenstudied in the reactions induced by 46.7 MeV/u ~(12)C ion on the ~(58)Ni, ~(115)In and ~(197)Au targets. Thereduced momentum distribution widths of the projectile-like fragments for projectile fragmentationand transfer reactions were extracted from the experimental data respectively. The nuclear temperatureperameters were obtained from the relative populations of the unstable particle emission ...
1993, 10(3): 31-35.
doi: 10.11804/NuclPhysRev.10.03.031
摘要:
利用核化学方法测量了20～46.2MeV/u~(12)C与铜靶核碰撞中重余核产物的平均反冲射程及余核产额,从而得到了该系统的线性动量转移及重余核质量产额分布随入射能量的变化,讨论了线性动量转移与靶核几何尺寸及系统尺寸的关系,利用两体衰变理论对重余核质量产额分布进行了分析,并认为在这个能区,该碰撞系统所形成的激发核的主要衰变模式是相继两体衰变。 The linear momentum transfer (LMT) and mass distribution of the residues in thecollisions of ~(12)C with ~(Nat)Cu in energy region of 20～46. 2MeV/u were measured by usingrediochemical method. Comparing the LMT in this system with that in other systems, linear dependenceof the maxium LMT for central collision on geometry of target nucleus was obtained, and the averageLMT then depended on the geometry of whole system. Comparision of the mass distribution measured here with theoretical calculation...
利用核化学方法测量了20～46.2MeV/u~(12)C与铜靶核碰撞中重余核产物的平均反冲射程及余核产额,从而得到了该系统的线性动量转移及重余核质量产额分布随入射能量的变化,讨论了线性动量转移与靶核几何尺寸及系统尺寸的关系,利用两体衰变理论对重余核质量产额分布进行了分析,并认为在这个能区,该碰撞系统所形成的激发核的主要衰变模式是相继两体衰变。 The linear momentum transfer (LMT) and mass distribution of the residues in thecollisions of ~(12)C with ~(Nat)Cu in energy region of 20～46. 2MeV/u were measured by usingrediochemical method. Comparing the LMT in this system with that in other systems, linear dependenceof the maxium LMT for central collision on geometry of target nucleus was obtained, and the averageLMT then depended on the geometry of whole system. Comparision of the mass distribution measured here with theoretical calculation...
1993, 10(3): 36-38.
doi: 10.11804/NuclPhysRev.10.03.036
摘要:
本文介绍~(12)C(50MeV/u)+~(209)Bi核反应中线性动量转移LMT分布的实验测定及结果,利用BUU方程对该碰撞过程进行了动力学模拟计算,对理论计算所得LMT分布和实验分布进行了比较和讨论。 The experimental measurements and results of LMT distribution in ~(12)C(50MeV/u)+~(208)Bi reaction are reported. By using BUU equation for nucleus-nucleus collision process, the dynamicimitation calculation is made. The theoretical calculated LMT distribution is compared with theexperimental one and some discussion has been reviewed.
本文介绍~(12)C(50MeV/u)+~(209)Bi核反应中线性动量转移LMT分布的实验测定及结果,利用BUU方程对该碰撞过程进行了动力学模拟计算,对理论计算所得LMT分布和实验分布进行了比较和讨论。 The experimental measurements and results of LMT distribution in ~(12)C(50MeV/u)+~(208)Bi reaction are reported. By using BUU equation for nucleus-nucleus collision process, the dynamicimitation calculation is made. The theoretical calculated LMT distribution is compared with theexperimental one and some discussion has been reviewed.
1993, 10(3): 39-42.
doi: 10.11804/NuclPhysRev.10.03.039
摘要:
用46.7MeV/u~(12)C轰击~(159)Tb、~(197)Au、~(209)Bi,测量关联裂片的速度和角度,研究了线性动量转移(LMT)、质量和出平面角分布,提取了核温度,应用级联两体统计衰变理论进行了拟合与解释,结果表明:在～50MeV/u入射能的中能重离子碰撞中,以非完全熔合方式形成了核温度高达4～5MeV的类复合核,其后通过裂变、蒸发级联统计两体衰变而退激。 The velocities and angles of fission partners emitted from reactions in ~(12)C+~(159)Tb, ~(197)Au,~(209)Bi systems with bombarding energy of 46.7MeV/u are measured. The linear momentum transferfrom projectile to target、mass and out-of-reaction plane angle distributions of fission fragments arestudied, and the temperatures of the target residues are extracted. These results have been explained by statistical binary decay model. It seems that the compound-likesystem with high temperature...
用46.7MeV/u~(12)C轰击~(159)Tb、~(197)Au、~(209)Bi,测量关联裂片的速度和角度,研究了线性动量转移(LMT)、质量和出平面角分布,提取了核温度,应用级联两体统计衰变理论进行了拟合与解释,结果表明:在～50MeV/u入射能的中能重离子碰撞中,以非完全熔合方式形成了核温度高达4～5MeV的类复合核,其后通过裂变、蒸发级联统计两体衰变而退激。 The velocities and angles of fission partners emitted from reactions in ~(12)C+~(159)Tb, ~(197)Au,~(209)Bi systems with bombarding energy of 46.7MeV/u are measured. The linear momentum transferfrom projectile to target、mass and out-of-reaction plane angle distributions of fission fragments arestudied, and the temperatures of the target residues are extracted. These results have been explained by statistical binary decay model. It seems that the compound-likesystem with high temperature...
1993, 10(3): 43-47.
doi: 10.11804/NuclPhysRev.10.03.043
摘要:
HIRFL上发展的奇异核次级束流的研究计划分为三阶段。1.基本就位的改造束流后输运为(PF)RNB;2.设计中的高性能(PF)RNB;3.展望中的重离子冷却(加速)储存环。同时介绍了第一阶段RNB进展。The researches with Radioactive Nucleon Beam (RNB) at HIRFL is proposed as threestages. 1) Modification of post beam transport line as Projectile Fragmentation (PF) type RNB underconstruction. 2) High quality (PF) RNB being designed. 3) Storage ring (with accelerating ability) isperspective. Meantime, the progress of 1st stage RNB at HIRFL is described.
HIRFL上发展的奇异核次级束流的研究计划分为三阶段。1.基本就位的改造束流后输运为(PF)RNB;2.设计中的高性能(PF)RNB;3.展望中的重离子冷却(加速)储存环。同时介绍了第一阶段RNB进展。The researches with Radioactive Nucleon Beam (RNB) at HIRFL is proposed as threestages. 1) Modification of post beam transport line as Projectile Fragmentation (PF) type RNB underconstruction. 2) High quality (PF) RNB being designed. 3) Storage ring (with accelerating ability) isperspective. Meantime, the progress of 1st stage RNB at HIRFL is described.
1993, 10(3): 48-52.
doi: 10.11804/NuclPhysRev.10.03.048
摘要:
用PAT、CEMS、SEM和TEM分析观测了HIRFL提供的能量为几十MeV到几百MeV的碳离子在Ni、马氏体时效不锈钢、HT—9铁素体钢和316L不锈钢中引起的辐照效应,包括辐照引起的偏析、脱溶、相变和肿胀,以及辐照肿胀随辐照温度的变化关系,研究了510MeV的碳离子在高纯Ni中的损伤分布,并给出了95MeV的Ar离子模拟宇宙射线在宇宙飞行器中引起数字半导体器件“软故障”的最近结果。 The radiation effects were studied by means of PAT, CEMS, SEM and TEM in nickel,martensitic ageing stainless steel, ferrite steel HT-9 and stainless steel 316L induced by carbon ionswith energy of tens of MeV to hundreds of MeV delivered by HIRFL. It includes segregate,preciptale, phase change and void swelling, as well as temperature-relativity of the irradiationswelling. The damage distribution was also studied in nickel irradiated by 510MeV C~(6+). And the recentresults of Ar ions ...
用PAT、CEMS、SEM和TEM分析观测了HIRFL提供的能量为几十MeV到几百MeV的碳离子在Ni、马氏体时效不锈钢、HT—9铁素体钢和316L不锈钢中引起的辐照效应,包括辐照引起的偏析、脱溶、相变和肿胀,以及辐照肿胀随辐照温度的变化关系,研究了510MeV的碳离子在高纯Ni中的损伤分布,并给出了95MeV的Ar离子模拟宇宙射线在宇宙飞行器中引起数字半导体器件“软故障”的最近结果。 The radiation effects were studied by means of PAT, CEMS, SEM and TEM in nickel,martensitic ageing stainless steel, ferrite steel HT-9 and stainless steel 316L induced by carbon ionswith energy of tens of MeV to hundreds of MeV delivered by HIRFL. It includes segregate,preciptale, phase change and void swelling, as well as temperature-relativity of the irradiationswelling. The damage distribution was also studied in nickel irradiated by 510MeV C~(6+). And the recentresults of Ar ions ...
1993, 10(3): 53-55.
doi: 10.11804/NuclPhysRev.10.03.053
摘要:
用穆斯堡尔谱学、正电子湮没技术和高分辨电子显微镜等方法研究了高能碳离子在石榴石铁氧体材料上的辐照效应,辐照效应引起材料微结构变化源于缺陷和缺陷团,导致缺陷周围磁结构变化,内场趋向各向同性,辐照并且使得晶胞参数变大;引起材料磁性能变化源于由于O~2—空位形成而使超交换场降低,从而减小超精细场。 The vacancies and vacancy clusters induced by the irradiation lead to the change of themagnetic structure around the defects. The reduction of the hyperfine magnetic field is caused by thelower superexchange field due to the formation of the O~(2-) vacancies. The change of direction of thehyperfine field has been also observed in Mossbauer spectra. On the other hand, the X-raydiffraction showed that the defects give rise to an increase of the lattice constant of the samples.
用穆斯堡尔谱学、正电子湮没技术和高分辨电子显微镜等方法研究了高能碳离子在石榴石铁氧体材料上的辐照效应,辐照效应引起材料微结构变化源于缺陷和缺陷团,导致缺陷周围磁结构变化,内场趋向各向同性,辐照并且使得晶胞参数变大;引起材料磁性能变化源于由于O~2—空位形成而使超交换场降低,从而减小超精细场。 The vacancies and vacancy clusters induced by the irradiation lead to the change of themagnetic structure around the defects. The reduction of the hyperfine magnetic field is caused by thelower superexchange field due to the formation of the O~(2-) vacancies. The change of direction of thehyperfine field has been also observed in Mossbauer spectra. On the other hand, the X-raydiffraction showed that the defects give rise to an increase of the lattice constant of the samples.
1993, 10(3): 56-60.
doi: 10.11804/NuclPhysRev.10.03.056
摘要:
利用电子迥旋共振(ECR)多电荷离子源产生的高电荷态离子束和LHT—30VUV真空紫外单色仪,研究了N~6+、O~5+、Ne~4+与He碰撞激发过程,观察到单电子俘获、双电子俘获和入射离子直接激发三种激发过程。 We have investigated the excitation processes in collisions between N~(6+), O~(5+), Ne~(4+) andHe by using the ECR ionic source and the LHT-30 VUV Monochromator. The emission spectra showthat there are three channels of excitation in the N~(6+)+He collision system: (1) Single electroncapture into excited states; (2) Double electron capture into excited states; (3) Direct excitation ofincident ions.
利用电子迥旋共振(ECR)多电荷离子源产生的高电荷态离子束和LHT—30VUV真空紫外单色仪,研究了N~6+、O~5+、Ne~4+与He碰撞激发过程,观察到单电子俘获、双电子俘获和入射离子直接激发三种激发过程。 We have investigated the excitation processes in collisions between N~(6+), O~(5+), Ne~(4+) andHe by using the ECR ionic source and the LHT-30 VUV Monochromator. The emission spectra showthat there are three channels of excitation in the N~(6+)+He collision system: (1) Single electroncapture into excited states; (2) Double electron capture into excited states; (3) Direct excitation ofincident ions.
1993, 10(3): 61-64.
doi: 10.11804/NuclPhysRev.10.03.061
摘要:
在中科院近代物理研究所兰州重离子研究装置(HIRFL)上,采用46.6MeV/u~(12)C~(6+)离子对四种不同作物种子进行了生物学效应研究,结果表明:重离子的轰击和贯穿,不仅会在种子表面外貌而且也对种子内部细胞造成严重损伤,重离子对种子萌发能力和生长发育均有明显的抑制作用,对生物功能也有影响;在种子的根尖细胞中出现的染色体畸变具有多种类型,而且畸变频率明显高于对照组。重离子对多种细胞器也产生了严重损伤,受损DNA具有一定的修复能力,测定了四种作物种子的半致死剂量及失活截面,找到了四种作物之间辐射敏感性的差异,讨论了细胞器损伤与生理过程异常的关系和受损DNA的修复过程。 The biological effects of 46.6MeV/u ~(12)C~(6+) ions on four kinds of plant seeds were studiedat HIRFL of Institute of Modern Physics (IMP), Academia Sinica. The results indicate that seriousinjuries were presented on not only external features of the seeds but also internal cells due to the bombardment and penetration of the ions. The heavy ions can significantly inhibitgermination and growth of the seeds and can affect physiological functions. In root tip cells ofirradiated seeds...
在中科院近代物理研究所兰州重离子研究装置(HIRFL)上,采用46.6MeV/u~(12)C~(6+)离子对四种不同作物种子进行了生物学效应研究,结果表明:重离子的轰击和贯穿,不仅会在种子表面外貌而且也对种子内部细胞造成严重损伤,重离子对种子萌发能力和生长发育均有明显的抑制作用,对生物功能也有影响;在种子的根尖细胞中出现的染色体畸变具有多种类型,而且畸变频率明显高于对照组。重离子对多种细胞器也产生了严重损伤,受损DNA具有一定的修复能力,测定了四种作物种子的半致死剂量及失活截面,找到了四种作物之间辐射敏感性的差异,讨论了细胞器损伤与生理过程异常的关系和受损DNA的修复过程。 The biological effects of 46.6MeV/u ~(12)C~(6+) ions on four kinds of plant seeds were studiedat HIRFL of Institute of Modern Physics (IMP), Academia Sinica. The results indicate that seriousinjuries were presented on not only external features of the seeds but also internal cells due to the bombardment and penetration of the ions. The heavy ions can significantly inhibitgermination and growth of the seeds and can affect physiological functions. In root tip cells ofirradiated seeds...
1993, 10(3): 65-66.
doi: 10.11804/NuclPhysRev.10.03.065
摘要:
本文报导了ECR源对接于SFC束运线前后的一些实验改进工作。给出在该源上使用冷阴极电子枪的初步实验结果。 Some source modifications and tests before and after installing the source to SFC beamline are reported. A preliminary study on an electron gun with cold cathode used in CAPRICE typeECR source is presented.
本文报导了ECR源对接于SFC束运线前后的一些实验改进工作。给出在该源上使用冷阴极电子枪的初步实验结果。 Some source modifications and tests before and after installing the source to SFC beamline are reported. A preliminary study on an electron gun with cold cathode used in CAPRICE typeECR source is presented.
1993, 10(3): 67-68.
doi: 10.11804/NuclPhysRev.10.03.067
摘要:
本文描述了SFC中心区的新结构,采用ECRIS后,在中心区安装了螺旋线型静电偏转器,磁极和D电极都作了修改,送入HIRFL的首次束流~(40)Ar~(8+)的流强可大于1.2μA。The new structure of SFC centre region is described. After an ECRIS was used, a spiralinflector had been assembled at the centre of the machine. The magnetic plog and the Dee electrodewere modified. The current of the first beam ~(40)Ar~(8+) sent to HIRFL is more than 1.2μA.
本文描述了SFC中心区的新结构,采用ECRIS后,在中心区安装了螺旋线型静电偏转器,磁极和D电极都作了修改,送入HIRFL的首次束流~(40)Ar~(8+)的流强可大于1.2μA。The new structure of SFC centre region is described. After an ECRIS was used, a spiralinflector had been assembled at the centre of the machine. The magnetic plog and the Dee electrodewere modified. The current of the first beam ~(40)Ar~(8+) sent to HIRFL is more than 1.2μA.
1993, 10(3): 69-72.
doi: 10.11804/NuclPhysRev.10.03.069
摘要:
重离子冷却贮存环(CSR)设想是用于完善兰州重离子研究装置(HIRFL)的一项新计划,该环周长141m,布局采用具有两个较长直线节的六重对称形式,是一个既加速,又冷却贮存的多功能环,可将荷质比为1/2的轻重离子和荷质比为1/3的重离子分别加速到1GeV/u和500MeV/u左右,并采用HIRFL原有的两个回旋加速器SFC(K=69)和SSC(K=450)分别作注入器,CSR的主要目的是为开展物理实验的一些新领域提供高品质的重离子束。 CSR, a heavy ion Cooler Storage Ring, is a new proposal which is intended toconsummate HIRFL. The circumference of the ring is ~(141)m and a six-fold symmetry type withinserting two long straight sections is adopted in the distribution of the ring. CSR is a multipurpose ringwith two essential operating modes of synchrotron and cooler, and will accelerate the particles up to1Gev/u for light heavy ions(Z/A=1/2) and 500MeV/u for heavy ions(Z/A=1/3) by using theexisting two cyclotrons SFC (K=69)...
重离子冷却贮存环(CSR)设想是用于完善兰州重离子研究装置(HIRFL)的一项新计划,该环周长141m,布局采用具有两个较长直线节的六重对称形式,是一个既加速,又冷却贮存的多功能环,可将荷质比为1/2的轻重离子和荷质比为1/3的重离子分别加速到1GeV/u和500MeV/u左右,并采用HIRFL原有的两个回旋加速器SFC(K=69)和SSC(K=450)分别作注入器,CSR的主要目的是为开展物理实验的一些新领域提供高品质的重离子束。 CSR, a heavy ion Cooler Storage Ring, is a new proposal which is intended toconsummate HIRFL. The circumference of the ring is ~(141)m and a six-fold symmetry type withinserting two long straight sections is adopted in the distribution of the ring. CSR is a multipurpose ringwith two essential operating modes of synchrotron and cooler, and will accelerate the particles up to1Gev/u for light heavy ions(Z/A=1/2) and 500MeV/u for heavy ions(Z/A=1/3) by using theexisting two cyclotrons SFC (K=69)...
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