Nuclear Magnetic Resonance on Short-Lived Nuclei Polarized by Means of Tilted Foil Technique

利用倾斜箔技术极化短寿命原子核的核磁共振

• 批准号: 60890008
• 负责人: MINAMISONO Tadanori
• 金额: $ 12.48万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60890008/
• 关键词: Short-lived Nuclei; Asymmetric <beta> decay; Nuclear Spin Polarization; ビーム・フォイル; スピン; バナジューム; 格子間隙; 偏極; NMR

A new nuclear-magnetic-resonance (NMR) technique in which the asymmetric <beta> decay is detected has been developed for the studies of nuclear magnetic moments of short-lived <beta> -emmiting nuclei. Because of its powerful technique, i.e. high production efficiency of polarized <beta> -emitter through nuclear reaction, high detection efficiency of NMR by means of asymmetric <beta> decay, deep implantation of the impurity in materials, no limitation in the combination between host materials and impurity, and finally dilute density of the impurity, this NMR method can be an efficient tool for other studies in solid state physics, and nuclear physics.In order to make the present NMR technique applicable to short-lived nuclei in the mass number 40<A<60, that have been difficult to polarize through nuclear reaction, a new technique, i.e. the creation of nuclear polarization by means beam-tilted-foil interaction, has been developed. This has been incorporated in the NMR technique successfully. Foils of carbon and/or mylor were used. Gold metal on the surface of the foil from where kinetic ions were ejected were shown to be suitable for the ions, since more electrons were attached on the ions compared with other cases. The present NMR system was shown to be expanded in its applicability by use of <^(12)B> , <^8Li> , and <^(39)Ca> nuclei.

发展了一种新的核磁共振（NMR）技术<beta>，用于研究短寿命发射核的磁矩<beta>。由于其强大的技术，即<beta>通过核反应产生极化发射极的高效率，通过非对称衰变的NMR的高探测效率<beta>，杂质在材料中的深度注入，主体材料与杂质之间的结合没有限制，最终稀释杂质的密度，这种NMR方法可以成为固体物理和核物理中其他研究的有效工具。在核反应中难以消除的核极化问题上，发展了一种新的技术，即通过束-倾斜箔相互作用产生核极化。这已被成功地纳入核磁共振技术。使用碳箔和/或米洛箔。箔表面上的金金属被证明适合于离子，因为与其他情况相比，更多的电子附着在离子上。通过使用&lt;^（12）B&gt;、&lt;^8 Li&gt;和&lt;^（39）Ca&gt;核，本NMR系统的适用性得到了扩展。

项目成果

Journal of Physical Society of Japan,Suppl.Vol.50. 1046 (1986)

日本物理学会杂志，增刊第50卷。

野尻洋一 他: Journal of Phys.Soc.Japan(Suppl.). 55. 1086-1087 (1986)

Yoichi Nojiri 等：日本物理学杂志（增刊）55. 1086-1087 (1986)。

南国忠則 他: Journal Phys. Soc Japan (Suppl). 55. 1044-1045 (1986)

Tadanori Nangoku 等人：《日本物理学杂志》（增刊）55. 1044-1045 (1986)。

南国忠則 他: Journal of Phys. Soc.Japan (suppl). 55. 1046-1047 (1986)

Tadanori Nangoku 等人：《日本物理学杂志》（增刊）55. 1046-1047 (1986)。

T. Minamisono et al.: "Hyperfine Interactions of Spin Polarized <beta> -Emitter <^(12)N> in Fe Crystal" Journal of Phys. Soc. Japan (Suppl.). 55. 1044-1045 (1986)

T. Minamisono 等人：“Fe 晶体中自旋极化 <β> -发射极 <^(12)N> 的超精细相互作用”物理学杂志。