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초강력 레이저 과학 연구단
초강력 레이저과학 연구단
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Intensity-dependent resonant transmission of x-rays in solid-density aluminum plasma

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dc.contributor.authorM. S. Cho-
dc.contributor.authorChung H.-K.-
dc.contributor.authorB. I. Cho-
dc.date.available2018-12-13T10:46:26Z-
dc.date.created2018-06-26-
dc.date.issued2018-05-
dc.identifier.issn1070-664X-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/4990-
dc.description.abstractX-ray free-electron lasers (XFELs) provide unique opportunities to generate and investigate dense plasmas. The absorption and transmission properties of x-ray photons in dense plasmas are important in characterizing the state of the plasmas. Experimental evidence shows that the transmission of x-ray photons through dense plasmas depends greatly on the incident XFEL intensity. Here, we present a detailed analysis of intensity-dependent x-ray transmission in solid-density aluminum using collisional-radiative population kinetics calculations. Reverse saturable absorption (RSA), i.e., an increase in x-ray absorption with intensity has been observed for photon energies below the K-absorption edge and in the intensity range of 1016-1017 W/cm2 for XFEL photons with 1487 eV. At higher intensities, a transition from RSA to saturable absorption (SA) is predicted; thus, the x-ray absorption decreases with intensity above a threshold value. For XFEL photon energies of 1501 eV and 1515 eV, the transition from RSA to SA occurs at XFEL intensities between 1017-1018 W/cm2. Electron temperatures are predicted to be in the range of 30-50 eV for the given experimental conditions. Detailed population kinetics of the charge states explains the intensity-dependent absorption of x-ray photons and the fast modulation of XFEL pulses for both RSA and SA. © 2018 Author(s)-
dc.languageENG-
dc.publisherAMER INST PHYSICS-
dc.titleIntensity-dependent resonant transmission of x-rays in solid-density aluminum plasma-
dc.typeArticle-
dc.type.rimsA-
dc.identifier.wosid000433961800063-
dc.identifier.scopusid2-s2.0-85046668168-
dc.contributor.affiliatedAuthorM. S. Cho-
dc.identifier.bibliographicCitationPHYSICS OF PLASMAS, v.25, no.5, pp.0533010 --
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Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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