Tunneling Rotation of Methyl-Groups and Spin-Lattice Relaxation Time T_<1p> in the Rotating Frame
スポンサーリンク
概要
- 論文の詳細を見る
In order to investigate the quantum effect of CH.-group rotation on spin-lattice relaxation, Tn., the srin-lattice relaxation, time in the rotating frame, hasbeen measured in some methylbenzenes. The temperature dependence of T,showed the frectuencv inderendent minima which cannot be explained by theBPP theor>r. A model of 7'1/, has been r>rorosed considerinx the effect of quantumrotation. The frecuuencv inder>endent minima were interr>roted as the tunnelinsassisted minima. The tunneling frequencies of CH.-groups are determined to bel.0f0.l MHz at 74 K in r>entamethvlbenzene and 2.0i0.5 MHz at 60 K inhexamethylbenzene. The measurement of T3. gives a useful information of thequantum rotation which cannot be obtained by iT. measurement.
- 社団法人日本物理学会の論文
- 1981-07-15
著者
関連論文
- NMR Study of ^1H in Hexagonal C14 Type Laves Phase Metal-Hydrogen System ZrCr_2H_:Diffusion and Korringa Relaxation of ^1H
- Spin-Lattice Relaxation of Protons in Ammonium Sulfate:Influence of the Natural Abundance of ^O Nucleus on T_
- Nuclear Magnetic Relaxation of ^CI in NH_4CI and ND_4CI
- Anisotropy of T_ and T_ of Tetrahedrally Coordinated Four-Spin-1/2 System
- Nuclear Dipolar Relaxation in Four-Spin-1/2 Tetrahedral Group
- Spin-Lattice Relaxation of Dipolar Energy in Ammonium Salts
- Influence of the Naturally Abundant ^O on the Spin-Lattice Relaxation Time T_
- Tunneling Rotation of Methyl-Groups and Spin-Lattice Relaxation Time T_ in the Rotating Frame
- A Model of T_1ρ for Tunneling Ammonium Ions
- NMR Study of the Dynamic Motion of Rare Spin ^O in Solids
- Spin-Lattice Relaxation of Proton in Ammonium Perchlorate:Effect of the Motion of Oxygen Atoms
- Nuclear Magnetic Relaxation of ^2D via Rare Nuclear-Spin ^O in ND_4ClO_4 and Partially Deuterated NH_D_xClO_4
- Quantum Effect of Ammonium-Ion Rotation on ^N Spin-Lattice Relaxation Time
- On the Tunneling Resonance of Methyl-Protons at Low Temperature
- Low Field Spin-Lattice Relaxation in the Rotating Frame: Quantum Effect of NH_4-Ion Rotation