Scattering of intermediate energy unstable nuclear beam with a solid hydrogen target and measurements of density distribution of Oxygen 20 nucleus

固体氢靶的中能不稳定核束散射及氧20核密度分布测量

• 批准号: 17540252
• 负责人: SAKAGUCHI Harutaka
• 金额: $ 2.3万
• 依托单位: University of Miyazaki (2006)Kyoto University (2005)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17540252/
• 关键词: Unstable nuclear beam; Elastic scattering of unstable nuclei; Solid hydrogen target; 200; 9C nuclei; Density distribution of unstable; Unstable nuclei; Intermediate energy; Oxygen 20; Carbon 9; Solid hydrogen target; 不安定核; 陽子弾性散乱; 中間エネルギー; 原

We have designed and constructed a recoil particle spectrometer for the measurements of elastic and inelastic scattering of the unstable nuclear beam with a solid hydrogen sheet. In the 1st fiscal year we tested our detector system made of momentum tagging counters, beam line drift chambers, beam line scintillation counters for the time of flight measurements, drift chambers for recoil hydrogen and trigger scintillators and NaI(Tl) calorimeters by using the unstable nuclear beam of Oxygen 20. After the test beam time for the use of Oxygen 20, we have decided to use a break up reaction of 22Ne to obtain high intensity 200 beam. By this decision we have obtained more than 10 times beam intensity. In pararell to the beam time at the Heavy Ion Synchrotron HIMAC we have tested the NaI(Tl) calorimeter using the 80 MeV proton beam supplied at Cyclotron RI center of Tohoku University.. Since our calorimeters are made of NaI(Tl) Of 5cm x 5 cm x 45 cm long rod, position dependence of the light o … More utput deteriorates the energy resolution of the calorimeters. Thus we need to know the position dependence of the light output from the scintillators in order to obtain a good energy resolution for the calorimeter.In the 2^<nd> fiscal year we have performed a measurement of the elastic scattering of protons for the unstable nuclear beam of 9C and 20O supplied by the heavy ion synchrotron HIMAC. As for the target we have used solid hydrogen targets of 5mm thickness and 1 mm thickness for 9C and 20O respectively. In August and September we have partially completed the measurements After a half year's data reduction we have succeeded to obtain angular distributions of proton elastic scattering off 9C and 200 for the first time at intermediate energy. The results were reported at the meeting of the physical society of Japan in spring 2007 and will be reported at the international congress of nuclear physics held in Tokyo July 2007. Our data are now theoretically analyzed to deduce the density distribution of the nuclei 220 and 9C. Less

我们已经设计并构建了一个后坐力粒子光谱仪，用于用固体氢薄板对不稳定核束的弹性和非弹性散射进行测量。在第一会计年度中，我们测试了探测器系统，由动量标记计数器，梁线漂移室，梁线闪烁柜进行飞行测量时间，用于后坐氢的漂移室和触发器闪烁器和触发器（TL）量热量器（TL）量热量器，通过使用氧气射击的不稳定型氧气射击20。强度200光束。通过此决定，我们获得了超过10倍的光束强度。在重离子同步器HIMAC的Pararell到光束时间中，我们使用了Tohoku University Cyclotron RI中心提供的80 MEV质子束测试了NAI（TL）热量表。由于我们的热量计由NAI（TL）（TL）5cm x 45cm x 45cm x 45cm long Rod calliim calliim caltorce of Fromection frounce of Fromections的NAI（tl）均制成。我们需要知道闪烁体的光输出的位置依赖性，以便获得量热计的良好能量分辨率。在2^<nd>财政年度，我们对质子的弹性散射进行了测量，用于质子的弹性散射，用于由重量离子同步型Himac提供的9C和20O的核束。至于目标，我们分别使用了5mm厚度和1mm厚度的固体氢靶标的9C和20O。在八月和九月，我们已经在半年数据减少后部分完成了测量结果，我们成功地在中级能量中首次获得了质子弹性散射的角度分布和200。结果在2007年春季在日本物理学会会议上进行了报道，并将在2007年7月在东京举行的国际核物理大会上进行报告。现在，对我们的数据进行了分析，以推断核220和9C的密度分布。较少的

项目成果

原子核の圧縮率と巨大共鳴

核可压缩性和巨共振

• 发表时间: 2006
• 期刊: 日本物理学会誌 61・3
• 作者: 伊藤正俊;内田誠;坂口治隆
• 通讯作者: 坂口治隆

Study of the pionic enhancement in ^<16>O(p,p')^<16>O(O^-,T=1) at 295 MeV

295 MeV ^<16>O(p,p)^<16>O(O^-,T=1) 中π离子增强的研究

• 发表时间: 2006
• 期刊: Physics Letters B 632
• 作者: T.Kawabata;H.Sakaguchi;et al.
• 通讯作者: et al.

Analyzing powers for exclusive 1s1/2 protons knockout from light nuclei

分析轻核独有的 1s1/2 质子敲除能力

• 发表时间: 2005
• 期刊: Physical Review C72・4
• 作者: T.Noro;T.Yonemura;H.Sakaguchi;Y.Yasuda et al.
• 通讯作者: Y.Yasuda et al.

2 α+t cluster states in ^<11>B

^<11>B 中的 2 个 α+t 簇状态

• 发表时间: 2007
• 期刊: Physics Letters B 640
• 作者: T.Kawabata;H.Sakaguchi;et al.
• 通讯作者: et al.