نتایج جستجو برای: pulse like excitations

تعداد نتایج: 753655  

2005
S. A. MALINOVSKAYA

A selective excitation of closely spaced Raman transitions using femtosecond pulse shaping is studied within a semiclassical approach. An analytical pulse function is proposed having duration T that selectively excites one of two transitions separated by a frequency interval less than 1/T. It is shown that, for intense fields, both the field amplitude and pulse frequency spectrum have to be car...

2016
H. Y. Huang C. J. Jia Z. Y. Chen K. Wohlfeld B. Moritz T. P. Devereaux W. B. Wu J. Okamoto W. S. Lee M. Hashimoto Y. He Z. X. Shen Y. Yoshida H. Eisaki C. Y. Mou C. T. Chen D. J. Huang

Measurements of spin excitations are essential for an understanding of spin-mediated pairing for superconductivity; and resonant inelastic X-ray scattering (RIXS) provides a considerable opportunity to probe high-energy spin excitations. However, whether RIXS correctly measures the collective spin excitations of doped superconducting cuprates remains under debate. Here we demonstrate distinct R...

Journal: :Frontiers in Physics 2022

Intense ultrashort laser pulses can create highly excited matter with extraordinary properties. Experimental and theoretical investigations of these extreme conditions are very complex usually intertwined. Here, we report on a approach for the electron scattering rates optical properties in gold at elevated temperatures. Our theory is based degree occupancy conduction band as well inputs from a...

2009
Jonathan Hackett Yidun Wan

We derive conservation laws from interactions of actively-interacting braid-like excitations of embedded framed spin networks in Quantum Gravity. Additionally we demonstrate that actively-interacting braid-like excitations interact in such a way that the product of interactions involving two actively-interacting braid-like excitations produces a resulting actively-interacting form. ∗Email addre...

Journal: :Magnetic resonance in medicine 2012
Joonsung Lee Matthias Gebhardt Lawrence L Wald Elfar Adalsteinsson

The management of local and global power deposition in human subjects (specific absorption rate, SAR) is a fundamental constraint to the application of parallel transmission (pTx) systems. Even though the pTx and single channel have to meet the same SAR requirements, the complex behavior of the spatial distribution of local SAR for transmission arrays poses problems that are not encountered in ...

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