Arbitrarily accurate twin compositeπ-pulse sequences
نویسندگان
چکیده
منابع مشابه
Accurate Analysis of Dielectric Backed Planar Conducting Layers of Arbitrarily Shaped in a Rectangular Waveguide
The characteristics of dielectric backed planar conducting layers of arbitrarily shaped in a rectangular waveguide are calculated by means of coupled integral equation technique (CIET) which accurately takes higher order mode interactions. Equivalent structures for the accurate analysis whole structure are introduced in which magnetic surface currents are identified as the unknowns at the apert...
متن کاملGradient-Echo Pulse Sequences
The basic idea of parallel imaging is to reduce the number of acquisition steps (i.e. phase-encoding steps) by decreasing the sampling density in kspace. Artefacts, in particular aliasing artefacts, that would result from the reduced sampling density are compensated by employing image data from several independent coil elements with different spatial sensitivity profi les for reconstruction. Th...
متن کامل(HEED) Pulse Sequences
Coupling constants V (I5N 13CR) and V (15N 'H R) in 2-substituted pyridines [R = Me (1), CH = CH2 (2), C = C H (3), C (0)H (4), C (0)M e (5)] have been measured by using 7/ahn-echo extended (H EED) pulse sequences for one(ID ) and two-dimensional (2D ) l3C/'H N M R (HEEDINEPT, HEED-HETCOR). The magnitude of | 2/ ( ,5N 13Cr)| is hardly affected by the hybridiza tion o f 13Cr . 15N N M R spectra...
متن کاملMRI Pulse Sequences
Saturation Recovery The simplest sequence is known as Saturation Recovery in which there is a single 90? pulse and a long repetition time between pulses. If the signal is measured immediately following the pulse the image will depend on the proton density. If the sequence is repeated rapidly (short repetition time, TR) there will be only partial relaxation and the results will depend on proton ...
متن کاملArbitrarily Accurate Approximate Inertial Manifolds of Fixed Dimension
By employing an embedding result due to Mañé, and its recent strengthening due to Foias & Olson it is shown that a global attractor with finite fractal (box counting) dimension d lies within an arbitrarily small neighbourhood of a smooth graph over the space spanned by the first [[2d+1]] Fourier-Galerkin modes. The proof is, however, non-constructive.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2018
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.97.043408