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Y. Raffray

Bio: Y. Raffray is an academic researcher from University of Nantes. The author has contributed to research in topics: Phase space & Coherent states. The author has an hindex of 2, co-authored 2 publications receiving 202 citations.

Papers
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Journal ArticleDOI
C. Grégoire, B. Remaud1, F. Sébille1, L. Vinet, Y. Raffray1 
TL;DR: In this article, a semi-classical approach of the heavy-ion collision theory in the intermediate energy domain (10−100 MeV incident kinetic energy per nucleon) based on the Vlasov equation and its extension, when the residual interaction is accounted for through a collision kernel, is presented.

190 citations

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TL;DR: In this article, the properties of semi-classical phase space evolution equations are discussed in the context of the heavy ion reaction theory at intermediate energies (from 10 to 100 MeV per nucleon).

14 citations

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TL;DR: In this article , a series of shock-wave measurements on aluminum based on the use of a simultaneous Photon Doppler Velocimetry (PDV) and triature velocity interferometer system for any reflector is presented.
Abstract: We present a series of shock-wave measurements on aluminum based on the use of a simultaneous Photon Doppler Velocimetry (PDV) and triature velocity interferometer system for any reflector. Our dual setup can accurately measure shock velocities, especially in the low-speed range (<100 m s-1) and fast dynamics (<10 ns) where measurements are critical in terms of resolution and unfolding techniques. Especially, the direct comparison of both techniques at the same measurement point helps the physicist in determining coherent settings for the short time Fourier transform analysis of the PDV, providing increased reliability of the velocity measurement with a global resolution of few m s-1 in velocity and few ns FWHM in time. The advantages of such coupled velocimetry measurements are discussed, as well as new opportunities in dynamic materials science and applications.

Cited by
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Journal ArticleDOI
TL;DR: In this article, a detailed derivation of the quantum molecular dynamics equation, discussed the various approximations necessary to derive this equation and to make actual calculations feasible, is presented, and the calculations presented aim at the solution of two of the most interesting questions of contemporary heavy ion physics: What causes a nucleus to fragment into many heavy pieces, and can we determine the nuclear equation of state from heavy ion reactions?

930 citations

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TL;DR: In the last few years heavy ion experiments have addressed key questions regarding the behavior of nuclear matter at high excitation and density as discussed by the authors, which has been achieved by the formulation of calculational tools to apply microscopic models to experimental observables.

905 citations

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TL;DR: In this paper, the main ingredients of any transport method using in particular the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) implementation of this theory as an example are discussed.

385 citations

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TL;DR: In this article, the authors describe the time evolution of the nuclear many-body system within a nonperturbative transport approach as well as the methods employed for the evaluation of the elementary nucleon-nucleon-particle cross sections.

330 citations

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TL;DR: In this paper, a general transport equation is proposed which includes energy spreading effects, and a number of specific kinetic equations which are the non-equilibrium versions of well-known many-body theories for equilibrated nuclear matter are discussed.

225 citations