Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Clocking Femtosecond Collisional Dynamics via Resonant X-Ray Spectroscopy
Year:2018
Research Areas
  • Engineering
Information
Abstract
Electron-ion collisional dynamics is of fundamental importance in determining plasma transport properties, non-equilibrium plasma evolution and electron damage in di raction imaging applications using bright x-ray free-electron lasers (FELs). Here we describe the ?rst experimental measurements of ultra-fast electron impact collisional ionization dynamics using resonant core-hole spectroscopy in a solid-density magnesium plasma, created and diagnosed with the Linac Coherent Light Source x-ray FEL. By resonantly pumping the 1s ! 2p transition in highly-charged ions within an optically-thin plasma we have measured how o -resonance charge states are populated via collisional processes on femtosecond times scales. We present a collisional cross section model that matches our results and demonstrates how the cross sections are enhanced by dense-plasma e ects including continuum lowering. Non-LTE (local thermodynamic equilibrium) collisional radiative simulations show excellent agreement with the experimental results, and provide new insight on collisional ionization and three-body-recombination processes in the dense plasma regime.
International
Si
JCR
Si
Title
Physical Review Letters
ISBN
0031-9007
Impact factor JCR
8,839
Impact info
Volume
10.1103/PhysRevLett.120.055002
Journal number
120
From page
055002
To page
055002
Month
FEBRERO
Ranking
Participants
  • Autor: Q.¿Y. VAN DEN BERG
  • Autor: Elisa Alejandra Vázquez Fernandez-Tello (UPM)
  • Autor: T. BURIAN
  • Autor: J. CHALUPSKÝ
  • Autor: H-K CHUNG
  • Autor: O. CIRICOSTA
  • Autor: G.¿L. DAKOVSKI
  • Autor: V. HÁJKOVÁ
  • Autor: P. HOLLEBON
  • Autor: L. JUHA
  • Autor: J. KRZYWINSKI
  • Autor: R.¿W. LEE
  • Autor: M.¿P. MINITTI
  • Autor: T.¿R. PRESTON
  • Autor: A.¿G. DE LA VARGA
  • Autor: V. VOZDA
  • Autor: U. ZASTRAU
  • Autor: J.¿S. WARK
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: S.¿M. VINKO
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear "Guillermo Velarde"
  • Departamento: Ingeniería Energética
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)