Nonlinear Effects from Dipolar Interactions in Hyperpolarized Liquid [Formula presented]

M. P. Ledbetter; M. V. Romalis

doi:10.1103/PhysRevLett.89.287601

Nonlinear Effects from Dipolar Interactions in Hyperpolarized Liquid [Formula presented]

M. P. Ledbetter, M. V. Romalis

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We investigate nonlinear effects of long-range dipolar interactions in a spherical sample of hyperpolarized liquid [Formula presented]. Using two high-[Formula presented] SQUID detectors we directly measure the evolution of the magnetization gradients. For small initial rf tip angles we observe an increase in the transverse relaxation time [Formula presented] by a factor of 5 and coherent oscillations of magnetization gradients. For large tip angles we observe an exponential growth of the magnetization gradients and demonstrate a gain in sensitivity to magnetic field gradients by a factor of 10. Our results are in quantitative agreement with simple analytical predictions. We discuss applications of these nonlinear effects for precision measurements.

Original language	English (US)
Journal	Physical review letters
Volume	89
Issue number	28
DOIs	https://doi.org/10.1103/PhysRevLett.89.287601
State	Published - 2002

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.89.287601

Cite this

@article{fcd6af0322d14f41952ec84f63250804,

title = "Nonlinear Effects from Dipolar Interactions in Hyperpolarized Liquid [Formula presented] ",

abstract = "We investigate nonlinear effects of long-range dipolar interactions in a spherical sample of hyperpolarized liquid [Formula presented]. Using two high-[Formula presented] SQUID detectors we directly measure the evolution of the magnetization gradients. For small initial rf tip angles we observe an increase in the transverse relaxation time [Formula presented] by a factor of 5 and coherent oscillations of magnetization gradients. For large tip angles we observe an exponential growth of the magnetization gradients and demonstrate a gain in sensitivity to magnetic field gradients by a factor of 10. Our results are in quantitative agreement with simple analytical predictions. We discuss applications of these nonlinear effects for precision measurements.",

author = "Ledbetter, \{M. P.\} and Romalis, \{M. V.\}",

year = "2002",

doi = "10.1103/PhysRevLett.89.287601",

language = "English (US)",

volume = "89",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "28",

}

TY - JOUR

T1 - Nonlinear Effects from Dipolar Interactions in Hyperpolarized Liquid [Formula presented]

AU - Ledbetter, M. P.

AU - Romalis, M. V.

PY - 2002

Y1 - 2002

N2 - We investigate nonlinear effects of long-range dipolar interactions in a spherical sample of hyperpolarized liquid [Formula presented]. Using two high-[Formula presented] SQUID detectors we directly measure the evolution of the magnetization gradients. For small initial rf tip angles we observe an increase in the transverse relaxation time [Formula presented] by a factor of 5 and coherent oscillations of magnetization gradients. For large tip angles we observe an exponential growth of the magnetization gradients and demonstrate a gain in sensitivity to magnetic field gradients by a factor of 10. Our results are in quantitative agreement with simple analytical predictions. We discuss applications of these nonlinear effects for precision measurements.

AB - We investigate nonlinear effects of long-range dipolar interactions in a spherical sample of hyperpolarized liquid [Formula presented]. Using two high-[Formula presented] SQUID detectors we directly measure the evolution of the magnetization gradients. For small initial rf tip angles we observe an increase in the transverse relaxation time [Formula presented] by a factor of 5 and coherent oscillations of magnetization gradients. For large tip angles we observe an exponential growth of the magnetization gradients and demonstrate a gain in sensitivity to magnetic field gradients by a factor of 10. Our results are in quantitative agreement with simple analytical predictions. We discuss applications of these nonlinear effects for precision measurements.

UR - https://www.scopus.com/pages/publications/85038319034

UR - https://www.scopus.com/inward/citedby.url?scp=85038319034&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.89.287601

DO - 10.1103/PhysRevLett.89.287601

M3 - Article

C2 - 12513180

AN - SCOPUS:85038319034

SN - 0031-9007

VL - 89

JO - Physical review letters

JF - Physical review letters

IS - 28

ER -

Nonlinear Effects from Dipolar Interactions in Hyperpolarized Liquid [Formula presented]

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this