2026-05-05T20:48:15Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/643992024-01-10T20:01:16Zcom_10324_1159com_10324_931com_10324_894col_10324_1310

Demonstration of Geometric Effects and Resonant Scattering in the X-Ray Spectra of High-Energy-Density Plasmas Marley, E. V. Liedahl, D. A. Jarrott, L. C. Kemp, G. E. Heeter, R. F. Emig, J. A. Foord, M. E. Schneider, M. B. Rose, S. J. Wark, J. S. Pérez Callejo, Gabriel In a plasma of sufficient size and density, photons emitted within the system have a probability of being re-absorbed and re-emitted multiple times - a phenomenon known in astrophysics as resonant scattering. This effect alters the ratio of optically-thick to optically thin lines, depending on the plasma geometry and viewing angle, and has significant implications for the spectra observed in a number of astrophysical scenarios, but has not previously been studied in a controlled laboratory plasma. We demonstrate the effect in the x-ray spectra emitted by cylindrical plasmas generated by high power laser irradiation, and the results confirm the geometrical interpretation of resonant scattering. 2024-01-10T17:36:54Z 2024-01-10T17:36:54Z 2024-01-10T17:36:54Z 2021 info:eu-repo/semantics/article Physical Review Letters, Febrero 2021, vol. 126, p. 085001 0031-9007 https://uvadoc.uva.es/handle/10324/64399 10.1103/PhysRevLett.126.085001 8 Physical Review Letters 126 1079-7114 eng info:eu-repo/semantics/openAccess American Physical Society