Spin-Lattice Relaxation of Proton in Ammonium Perchlorate:Effect of the Motion of Oxygen Atoms

スポンサーリンク

概要

• 論文の詳細を見る

• Spin-lattice relaxation times T., of protons ('H) in the rotating frame weredetermined in ammonium perchlorate NH.Cl0. between 556 K and 125 K.The temperature dependence of T.. shows two minimum values 1.5 sec at about476 K and 0.94 sec at 238 K for an rf field Hj = 2.1 gauss. The origins of theminima T., are attributed to the motion of oxygen atoms "O of natural abundance(0.037 '3). Oxygen atoms affect 7'1, of protons in different two ways. The minimumOf'Tntt at hugher terrnperature IS due t0 the cross reIlxQtuon between 'II and "0spins, while that at low temperature due the the reorientation of C103-ions whichmodulates the dipolar interaction between 'H and "0 and also due to the crossrelaxation between 'H and "0. The value e'qQ/h= 12.3 MHz was determined for"0 in CIO,(-ton.

• 社団法人日本物理学会の論文
• 1985-09-15

著者

• Morimoto Kunihiko

  Faculty Of Integrated Arts And Sciences Hiroshima University

• Shimomura Kenji

  College Of General Education Fukuyama University

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

もっと見る 閉じる

スポンサーリンク