Zobrazeno 1 - 10
of 21
pro vyhledávání: '"D. A. Liedahl"'
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 1, p 23 (2023)
We report on emission spectra of iron in the extreme ultraviolet recorded at an electron density of ∼10 ^11 cm ^−3 on the Lawrence Livermore electron beam ion trap facility. We present a summary of the observed emission lines, including wavelengt
Externí odkaz:
https://doaj.org/article/850f2d0169254b46a431590ee1849eb8
Autor:
K W Hill, L Gao, B F Kraus, M Bitter, P C Efthimion, N Pablant, M B Schneider, D B Thorn, H Chen, R L Kauffman, D A Liedahl, M J MacDonald, A G MacPhee, H A Scott, S Stoupin, R Doron, E Stambulchik, Y Maron, B Lahmann
Publikováno v:
Plasma Physics and Controlled Fusion. 64:105025
The National Ignition Facility (NIF) diagnostic instrument manipulator (DIM) - based high resolution (dHIRES) x-ray spectrometer was used to measure the time evolution of the electron density (n e) and temperature (T e) in the hot spot of four NIF co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84e2868f573b5f4ede1b4ea57dd07d0b
https://doi.org/10.1088/1361-6587/ac9017
https://doi.org/10.1088/1361-6587/ac9017
Autor:
M. J. MacDonald, D. A. Liedahl, G. V. Brown, D. Åberg, D. T. Cliche, M. E. Foord, P. E. Grabowski, R. F. Heeter, D. J. Hoarty, R. A. London, M. E. Martin, J. Nilsen, M. V. Patel, H. A. Scott, R. Shepherd, H. D. Whitley, K. Widmann
Publikováno v:
Review of Scientific Instruments. 93:093517
K-shell x-ray emission spectroscopy is a standard tool used to diagnose the plasma conditions created in high-energy-density physics experiments. In the simplest approach, the emissivity-weighted average temperature of the plasma can be extracted by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43fc5261ccf0bd08e7b7c27338c5ea71
https://doi.org/10.1063/5.0101571
https://doi.org/10.1063/5.0101571
Autor:
G Pérez-Callejo, M A Barrios, D A Liedahl, M B Schneider, D B Thorn, O Jones, S P Regan, O Landen, R L Kauffman, A Nikroo, J Kroll, J Jaquez, H Huang, J D Moody, J S Wark, Jarrott, Leonard C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c013ba85c6ad16048ed8d7e18d27e7e0
Autor:
Theodore Sonne Perry, Evan S. Dodd, Barbara Gloria DeVolder, Heather Marie Johns, Tana Cardenas, Thomas Nick Archuleta, John L. Kline, Kirk Adler Flippo, Natalia Sergeevna Vinyard, Manolo Edgar Sherrill, Bernhard Heinz Wilde, Ian Lee Tregillis, Todd James Urbatsch, Melissa Rae Douglas, R. F. Heeter, D. A. Liedahl, B. G. Wilson, C. A. Iglesias, M. B. Schneider, M. E. Martin, R. A. London, M. F. Ahmed, N. B. Thompson, J. A. Emig, M. R. Zika, Y. P. Opachich, J. A. King, P. W. Ross, E. J. Huffman, R. A. Knight, J. A. Koch, T. D. Pond, R. S. Craxton, R. Zhang, P. W. McKenty, E. M. Garcia, J. E. Bailey, G. A. Rochau, S. B. Hansen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::027ca9ebfd17cc8efbcfa180b5136394
https://doi.org/10.2172/1396155
https://doi.org/10.2172/1396155
Autor:
P. A. M. van Hoof, W. H. Goldstein, Catherine Ramsbottom, M. E. Foord, S. J. Rose, R. F. Heeter, V. Jonauskas, R. S. Thoe, M. E. Cuneo, P. T. Springer, H.-K. Chung, D. A. Liedahl, James E. Bailey, Francis P. Keenan, R. Kisielius
Publikováno v:
Astrophysics and Space Science. 298:147-153
In experiments at the high-power Z-facility at Sandia National Laboratory in Albuquerque, New Mexico, we have been able to produce a low density photoionized laboratory plasma of Fe mixed with NaF. The conditions in the experiment allow a meaningful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3de9a32e972ac05838385550b1429ab
https://doi.org/10.1007/s10509-005-3925-1
https://doi.org/10.1007/s10509-005-3925-1
Autor:
Tahir Yaqoob, D. M. Crenshaw, Ian M. George, S. B. Kraemer, R. L. J. van der Meer, K. C. Steenbrugge, Nahum Arav, Jelle Kaastra, D. A. Liedahl, F. B. S. Paerels, T. J. Turner
Publikováno v:
Astronomy & Astrophysics. 434:569-584
We present the results from a 500 ks Chandra observation of the Seyfert 1 galaxy NGC 5548. We detect broadened emission lines of O VII and C VI in the spectra, similar to those observed in the optical and UV bands. The source was continuously variabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3e7a8b7a9da3d31c0fa3368f61e3c3f
https://doi.org/10.1051/0004-6361:20047138
https://doi.org/10.1051/0004-6361:20047138
Autor:
Th. Boller, E. M. Puchnarewicz, M. Sako, Jelle Kaastra, S. M. Kahn, Maria Santos-Lleo, J. Clavel, Etienne Behar, R. L. C. Starling, D. A. Liedahl, A. C. Brinkman
Publikováno v:
Astronomy & Astrophysics. 365:L168-L173
The luminous infrared-loud quasar IRAS 13349+2438 was observed with the XMM-Newton Observatory as part of the Performance Verification program. The spectrum obtained by the Reflection Grating Spectrometer (RGS) exhibits broad (v ~ 1400 km/s FWHM) abs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::777dcb696f89cec60fe04e78ae8ea8c6
https://doi.org/10.1051/0004-6361:20000081
https://doi.org/10.1051/0004-6361:20000081
We describe the results of an effort, funded by the Lawrence Livermore National Laboratory Directed Research and Development Program, to model, using FLASH time-dependent adaptive-mesh hydrodynamic simulations, XSTAR photoionization calculations, HUL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::586c1e8198b31c6289e37e60b3ddf541
https://doi.org/10.2172/926026
https://doi.org/10.2172/926026
Autor:
D. A. Liedahl, Steven M. Kahn
Publikováno v:
Iron Line Diagnostics in X-ray Sources ISBN: 3540543546
Iron L-shell transitions, which lie in the energy range 0.7 – 1.5 keV, can provide a wealth of important information about physical conditions in diverse astronomical sources. Although few data sets of adequate statistical quality are currently ava
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25af0a863d2bb7b1f10fad3c1b98877c
https://doi.org/10.1007/bfb0031265
https://doi.org/10.1007/bfb0031265