排序方式: 共有89条查询结果,搜索用时 15 毫秒
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Study of a multi-wire proportional chamber with a cathode strip and delay-line readout 总被引:2,自引:0,他引:2
The design principle for a multi-wire proportional chamber with a cathode strip and delay-line readout is described. A prototype chamber of a size of 10 cm×10 cm was made together with the readout electronics circuit. A very clean signal with very low background noise was obtained by applying a transformer between the delay-line and the pre-amplifier in order to match the resistance. Along the anode wire direction a position resolution of less than 0.5 mm was achieved with a ^55Fe-5.9 keV X ray source. The simple structure, large effective area and high position resolution allow the application of a gas chamber of this kind to many purposes. 相似文献
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用C语言编写成γ-电子级联过程的蒙特卡罗模拟程序,可在IBM系列微机上运行。程序可实时显示粒子输运与反应的模拟物理过程,并可有选择地累积各种谱。结果以事件方式与谱方式记录,可进行数据再处理。目前适用γ能区为0.1~500MeV,可扩展至其他能区。程序可用于γ探测器研制、核辐射防护和核医学等领域。 相似文献
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马凯 叶沿林 林承键 陈家豪 王东玺 韩家兴 贾会明 杨磊 阳黎升 胡梓瑶 陈莹 蒲伟良 李根 谭智威 黄大湖 骆天鹏 钟善豪 楼建玲 杨晓菲 李智焕 李奇特 许金艳 杨再宏 魏康 《中国物理C(英文版)》2023,(11):54-60
A 6Li(16O,19Ne*)3 H multi-nucleon transfer-reaction experiment was performed to populate the highly excited states in 19Ne.The subsequent decay particles,4He or protons from the 19Ne resonant states,were detected in coincidence with the recoil 3H.The excitation-energy spectra of 19Ne were reconstructed using the detected proton or 4He and the deduced 18F or 15O data... 相似文献
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FAISAL Jamil-Qureshi 楼建玲 叶沿林 曹中鑫 江栋兴 郑涛 华辉 李智焕 李湘庆 葛愉成 庞丹阳 李奇特 肖军 吕林辉 乔锐 游海波 陈瑞九 卢飞 Sakurai H Otsu H Nishimura M Sakaguchi S Baba H Togano Y Yoneda K 李琛 王硕 王赫 李阔昂 Nakamura T Nakayama Y Kondo Y Deguchi S Satou Y Tshoo K H 《中国物理快报》2010,27(9):65-68
Differential cross sections for the elastic scattering of halo nucleus 6He on proton target were measured at 82.3 MeV/u. The experimental results axe well reproduced by optical model calculations using global potential KD02 with a reduction of the depth of real volume part by a factor of 0.7. A systematic analysis shows that this behavior might be related to the weakly bound property of unstable nuclei. 相似文献
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中高能区的破碎和敲出反应,由于机制相对简单、对核的表面敏感、理论处理比较成熟等原因,在非稳定核的晕结构、壳移动等奇特性质研究中发挥了独到作用。针对次级束流强度较弱、能散较大等特点,实验上发展和应用了逆运动学有效立体角完全测量、轻重靶结合、高精度消色差磁谱仪、前向中子谱仪、在束γ测量等技术手段,大大提升了实验的探测能力和选择性。从物理问题探索和实验路线演变的角度,回顾了非稳定核破碎和敲出反应的发展过程与启示,并探讨未来的走向。 相似文献
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To perform a kinematically complete measurement of the dissociation reaction for neutron-rich nuclei, a multi-neutron correlation spectrometer is proposed at Peking University. A Monte Carlo simulation code based on GEANT4 is developed for a single scintillation bar which processes not only the energy deposition but also the light propagation in the scintillator and the light collection and conversion to signal at the end of the bar in a realistic way. The simulating method is described in detail in this paper, and the timing and position resolutions and detector efficiency are studied based on the simulation and compared with the experimental results. A new method of crosstalk rejection has been demonstrated to be important for the design of the whole spectrometer. 相似文献
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吴翠娥 叶沿林 江栋兴 郑涛 华辉 李智焕 李湘庆 陈志强 胡青元 张高龙 庞丹阳 王佳 Yamaguchi Y Ozawa A Tanihata I 《中国物理 C》2005,29(11):1052-1056
利用日本理化学研究所的放射性束流线RIPS, 测量了能量为79A MeV的17C在12C反应靶上的反应截面, 并同时得到了17C的移去1个、2个及3个中子的截面; 分别利用有限力程Glauber模型和少体Glauber模型结合壳模型的谱因子分析了反应截面和移去1个中子截面, 研究了17C的密度分布、结构和价中子布居. 反应截面和中子移去截面是两个相互独立的量, 通过对两者的分析, 都可以得出17C由芯核16C和价中子组成, 并且价中子主要处于d5/2轨道的结论. 总结了现有的碳同位素的反应截面和相互作用截面的工作. 相似文献
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