نتایج جستجو برای: dynamic nuclear polarisation

تعداد نتایج: 641526  

Journal: :Angewandte Chemie International Edition 2010

Journal: :Nature communications 2013
Y Puttisong X J Wang I A Buyanova L Geelhaar H Riechert A J Ptak C W Tu W M Chen

Nuclear spin hyperpolarization is essential to future solid-state quantum computation using nuclear spin qubits and in highly sensitive magnetic resonance imaging. Though efficient dynamic nuclear polarization in semiconductors has been demonstrated at low temperatures for decades, its realization at room temperature is largely lacking. Here we demonstrate that a combined effect of efficient sp...

Journal: :Journal of Magnetic Resonance 2012

2008
Elena M. Rossi Davide Lazzati Jay D. Salmonson Gabriele Ghisellini

We numerically compute light and polarisation curves of γ-ray burst afterglows for various configurations of the jet luminosity structure and for different dynamical evolutions. We especially consider the standard homogeneous “top hat” jet and the “universal structured jet” with power-law wings. We also investigate a possible more physical variation of the “top hat” model: the “Gaussian jet”. T...

Journal: :Frontiers in Physics 2023

Polarisation states are described by spin expectation values, known as Stokes parameters, the trajectories of which in a rotationally symmetric system form sphere named after Poincaré. Here, we show that broken rotational systems can exhibit distinct topological structures polarisation states. We use phase-shifter to circle <mml:m...

Journal: :Transactions of the Optical Society 1919

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