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Study of the spin structure of Helium-3 nucleus and the non-nucleonic degree of freedom.

Helium-3核自旋结构及非核自由度研究。

基本信息

批准号：
14340074
负责人：
HATANAKA Kichiji
金额：
$ 9.34万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340074/
关键词：
three nucleon force polarized ^3He target spin exchange type polarized target diode laser optical pumping non nucleonic degree of freedom spin correlation parameters elastic scattering 核子のクォーク構造ヘリウム3 スピン自由度

项目摘要

1.Cross section and all of spin observables were measured for the pd elastic scattering with 250 MeV polarized protons. Experimental results were compared to Faddeev calculations and effects of three nucleon forces were discussed.2.Cross section and polarization were measured for the elastic scattering of 450 MeV ^3He off ^<12>C, ^<58>Ni and ^<90>Zr. A ^3He polarimeter was newly developed. This is the first measurements of the spin observables for the ^3He scattering at the intermediate energies. Spin dependent optical potentials were obtained by fitting experimental results.3.A spin exchange type polarized ^3He target was developed. Computer control system was constructed to optimize the diode laser performance, temperatures of the pumping cell, and optical components.4.Theoretical framework was investigated to describe the p-^3He elastic backward scattering. It takes account of two-nucleon exchange processes in both the triplet and the singlet state. Non nucleonic degree of freedom, π-meson exchanges, is also included in the calculation.5.The absolute polarization was calibrated by measuring the spin correlation parameter C_<yy> of ^3He(p,π^+)^4He reaction at 300 and 400 MeV. The result was consistent with measurements with the NMR method.6.The spin correlation parameter C_<yy> was measured for the p-^3He elastic backward scattering at 200, 300 and 400 MeV. Preliminary results were presented at the meeting of the Physical society of Japan. Detailed analysis is in progress now.7.Theoretical investigation is continued to clarify the effect of ^3He wave functions on the parameter C_<yy>.8.The experimental research is expected to be performed at higher energies.

1.测量了250 MeV极化质子与PD的弹性散射截面和所有自旋观测数据。实验结果与Faddeev计算结果进行了比较，并讨论了三种核子力的影响。2.测量了450 MeV^3He在^&lt；12&gt；C，^&lt；58&gt；Ni和^&lt；90&gt；Zr的弹性散射截面和极化。新研制了一台~3He偏振仪。这是第一次测量中能区~3He散射的自旋可观测值。通过对实验结果的拟合，得到了与自旋相关的光学势。3.研制了自旋交换型偏振~3He靶。构建了计算机控制系统，对半导体激光器的性能、泵浦室的温度和光学元件进行了优化。4.研究了描述p-3He弹性后向散射的理论框架。它同时考虑了三重态和单重态下的两核子交换过程。计算中还考虑了非核子自由度，即π-介子交换。5.通过测量~3He(p，π~+)~4He反应在300 MeV和400 MeV下的自旋关联参数C_&lt；yy&gt；来标定绝对极化。6.测量了200、300和400 MeV的p-^3He弹性后向散射的自旋关联参数C_&lt；yy&gt；在日本物理学会的会议上介绍了初步结果。详细的分析正在进行中。7.继续进行理论研究，以阐明^3He波函数对参数C_&lt；y&gt；的影响。8.实验研究有望在更高的能量下进行。

项目成果

期刊论文数量（36）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

J.Kamiya, K.Hatanaka et al.: "Cross section and induced polarization in ^3He elastic scattering at 443 MeV."Physical Review C. 67・6. 064612 (2003)

J.Kamiya、K.Hatanaka 等人：“443 MeV ^3He 弹性散射中的横截面和诱发极化”。《物理评论》C. 67・6 (2003)。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Cross section and induced polarization in ^3He elastic scattering at 443 MeV.

443 MeV ^3He 弹性散射的横截面和诱发极化。

DOI：
发表时间：
2003
期刊：
Physical Review C 67・6
影响因子：
0
作者：
J.Kamiya
通讯作者：
J.Kamiya

Cross section and complete set of proton spin observables in p → d elastic scattering at 250 MeV

250 MeV p → d 弹性散射中质子自旋可观测量的横截面和全套

DOI：
10.1103/physrevc.66.044002
发表时间：
2002
期刊：
Physical Review C
影响因子：
3.1
作者：
K. Hatanaka;Y. Shimizu;D. Hirooka;J. Kamiya;Y. Kitamura;Y. Maeda;T. Noro;E. Obayashi;K. Sagara;T. Saito;H. Sakai;Y. Sakemi;K. Sekiguchi;A. Tamii;T. Wakasa;T. Yagita;K. Yako;H. Yoshida;V. Ladygin;H. Kamada;W. Glöckle;J. Golak;A. Nogga;H. Witała
通讯作者：
H. Witała

Study of the Spin Dependent ^3He-Nucleus Interaction at 450 MeV

450 MeV 下自旋相关的 ^3He-原子核相互作用的研究

DOI：
发表时间：
2003
期刊：
AIP Conference Proceedings 675
影响因子：
0
作者：
J.Kamiya
通讯作者：
J.Kamiya

Japanese facility updates related to few-body physics

日本与少体物理学相关的设施更新

DOI：
发表时间：
2004
期刊：
Nuclear Physics A 737
影响因子：
0
作者：
M.Gliozzi;W.Brinkmann;C.Rath;I.E.Papadakis;H.Negoro;H.Scheingraber;H.Mizuno;K.Hatanaka
通讯作者：
K.Hatanaka