A New Mode of the Low-Field Microwave Emission from n-InSb

1969 ◽  
Vol 8 (3) ◽  
pp. 403-403 ◽  
Author(s):  
Takuro Koike
Keyword(s):  
Microwave Emission ◽  
Low Field

An explanation for the Bekefi peaks in the low‐field microwave emission from InSb

1973 ◽  
Vol 23 (1) ◽  
pp. 41-42 ◽  
Author(s):  
H. H. J. M. Niederer ◽  
R. G. van Welzenis
Keyword(s):  
Microwave Emission ◽  
Low Field

Low‐Field Microwave Emission from Indium Antimonide

1966 ◽  
Vol 37 (7) ◽  
pp. 2922-2924 ◽  
Author(s):  
A. G. Chynoweth ◽  
S. J. Buchsbaum ◽  
W. L. Feldmann
Keyword(s):  
Indium Antimonide ◽  
Microwave Emission ◽  
Low Field

LOW FIELD E.S.R, IN THE SUPERCONDUCTING RELAXED STATE OF (TMTSF)2C104AT LOW TEMPERATURE

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-1033-C3-1036 ◽  
Author(s):  
J. M. Delrieu ◽  
N. S. Sullivan ◽  
Bechgaard
Keyword(s):  
Low Temperature ◽  
Low Field

The Microwave Emission Aspects by Rock Fracture Experiment

2016 ◽  
Vol 136 (5) ◽  
pp. 227-234
Author(s):  
Rikuya Hanawa ◽  
Kuniaki Shibata ◽  
Kenji Saegusa ◽  
Tadashi Takano
Keyword(s):  
Rock Fracture ◽  
Microwave Emission ◽  
Rock Fracture Experiment

Fluctuation Measurement Across the Broad Range of the Low-field Side Edge Plasmas in the TST-2 Spherical Tokamak

2012 ◽  
Vol 132 (7) ◽  
pp. 499-504
Author(s):  
Masateru Sonehara ◽  
Yoshihiko Nagashima ◽  
Yuichi Takase ◽  
Akira Ejiri ◽  
Takashi Yamaguchi ◽  
...  
Keyword(s):  
Spherical Tokamak ◽  
Side Edge ◽  
Low Field ◽  
Edge Plasmas ◽  
Fluctuation Measurement

Improved Contrast in Ultra-Low-Field MRI with Time-Dependent Bipolar Prepolarizing Fields: Theory and NMR Demonstrations

2013 ◽  
Vol 20 (3) ◽  
pp. 327-336 ◽  
Author(s):  
Jaakko O. Nieminen ◽  
Jens Voigt ◽  
Stefan Hartwig ◽  
Hans Jürgen Scheer ◽  
Martin Burghoff ◽  
...  
Keyword(s):  
Field Strength ◽  
Time Course ◽  
Signal Strength ◽  
Relaxation Rates ◽  
Resonance Imaging ◽  
New Approach ◽  
Spin Lattice ◽  
Low Field ◽  
Low Field Mri ◽  
Magnetic Resonance Imaging Mri

Abstract The spin-lattice (T1) relaxation rates of materials depend on the strength of the external magnetic field in which the relaxation occurs. This T1 dispersion has been suggested to offer a means to discriminate between healthy and cancerous tissue by performing magnetic resonance imaging (MRI) at low magnetic fields. In prepolarized ultra-low-field (ULF) MRI, spin precession is detected in fields of the order of 10-100 μT. To increase the signal strength, the sample is first magnetized with a relatively strong polarizing field. Typically, the polarizing field is kept constant during the polarization period. However, in ULF MRI, the polarizing-field strength can be easily varied to produce a desired time course. This paper describes how a novel variation of the polarizing-field strength and duration can optimize the contrast between two types of tissue having different T1 relaxation dispersions. In addition, NMR experiments showing that the principle works in practice are presented. The described procedure may become a key component for a promising new approach of MRI at ultra-low fields

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