Hahn-echoes from 14N in solids by the stray-field method:: prospects for imaging using Long Echo-Train Summation

被引：7

作者：

Randall, EW

Samoilenko, AA

Fu, RQ

机构：

[1] Univ London Queen Mary & Westfield Coll, Dept Chem, London E1 4NS, England

[2] Russian Acad Sci, Inst Chem Phys, Moscow 117977, Russia

[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 1999年 / 14卷 / 3-4期

关键词：

Hahn-echoes; N-14; solids; stray-field; imaging; LETS;

D O I：

10.1016/S0926-2040(99)00022-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have observed Hahn-echoes resulting from Powles-Mansfield pulse-sequences for a variety of nitrogen containing solids which exhibit a range of N-14 electric quadrupole coupling constants (C-q) from 0 to 4.9 MHz. Long echo-decays were frequently obtained which allowed the collection of many echoes in one echo-train, so that the method of Long Echo-Train Summation (LETS), could be used to accumulate signal. A one-dimensional STRAFI-profile is shown for solid ammonium nitrate. The spatial resolution is discussed as a function of C-q. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 179

页数：7

共 19 条

[1] Hahn spin echoes in large static gradients following a series of 90 degrees pulses [J].