Enhancement of SQUID-detected NMR signals with hyperpolarized liquid 129Xe in a 1 μT magnetic field -: art. no. 067601

被引：33

作者：

Heckman, JJ ^{[1
]}

Ledbetter, MP ^{[1
]}

Romalis, MV ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.91.067601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an enhancement of proton NMR signals by a factor of 10(6) by cross polarization with hyperpolarized liquid Xe-129 in an ultralow magnetic field of 1 muT. The NMR signals from cyclopentane, acetone, and methanol are detected using a commercial high-T-c SQUID magnetometer with a signal-to-noise ratio of up to 1000 from a single 90degrees tipping pulse. This technique allows a wide range of low-field NMR measurements and is promising for the detection of intermolecular scalar spin-spin couplings. Scalar intermolecular couplings can produce a shift of the average NMR frequency in a hyperpolarized sample even in the presence of rapid chemical exchange.

引用

页数：4

共 23 条

[1] Proton magnetization enhancement of solvents with hyperpolarized xenon in very low-magnetic fields [J].