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Phys Rev Lett
; 84(1): 171-4, 2000 Jan 03.
Artículo
en Inglés
| MEDLINE
| ID: mdl-11015862
RESUMEN
Protons in naphthalene and p-terphenyl doped with pentacene have been polarized up to 32% and 18%, respectively, at liquid nitrogen temperature in a magnetic field of 0.3 T by means of microwave-induced optical nuclear polarization. The polarization was measured by nuclear magnetic resonance as well as by the neutron transmission method. The relaxation time of the proton polarization at 0.0007 T and 77 K was found to be almost 3 h and the polarization enhancement reached a record value of 8x10(4). The usefulness of the method in many areas of physics and chemistry is discussed.
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Phys Rev D Part Fields
; 48(2): 466-478, 1993 Jul 15.
Artículo
en Inglés
| MEDLINE
| ID: mdl-10016273