Low magnetic field dynamic nuclear polarization using a single-coil two-channel probe
作者:
Dinh M. TonThat,
Matthew P. Augustine,
Alexander Pines,
John Clarke,
期刊:
Review of Scientific Instruments
(AIP Available online 1997)
卷期:
Volume 68,
issue 3
页码: 1527-1531
ISSN:0034-6748
年代: 1997
DOI:10.1063/1.1147641
出版商: AIP
数据来源: AIP
摘要:
We describe the design and construction of a single-coil, two-channel probe for the detection of low-field magnetic resonance using dynamic nuclear polarization (DNP). The high-frequency channel of the probe, which is used to saturate the electron spins, is tuned to the electron Larmor frequency, 75 MHz at 2.7 mT, and matched to 50 &OHgr;. Low-field,1H nuclear magnetic resonance (NMR) is detected through the second, low-frequency channel at frequencies <1 MHz. The performance of the probe was tested by measuring the DNP of protons in a manganese (II) chloride solution at 2.7 mT. At the proton NMR frequency of 120 kHz, the signal amplitude was enhanced over the value without DNP by a factor of about 200. ©1997 American Institute of Physics.
点击下载:
PDF
(90KB)
返 回