Zobrazeno 1 - 10
of 88
pro vyhledávání: '"William H. Goldstein"'
Autor:
K. B. Fournier, S. J. Rose, Valdas Jonauskas, P. T. Springer, M. E. Cuneo, Duane A. Liedahl, James E. Bailey, Francis P. Keenan, Mark Foord, Hyun-Kyung Chung, William H. Goldstein, P. A. M. van Hoof, Robert Heeter, Catherine Ramsbottom, R. Kisielius
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 99:712-729
The charge state distributions of Fe, Na and F are determined in a photoionized laboratory plasma using high-resolution X-ray spectroscopy. Independent measurements of the density and radiation flux indicate the ionization parameter ξ in the plasma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2612e44c5aa9b282d83f15753348d03
https://doi.org/10.1016/j.jqsrt.2005.05.057
https://doi.org/10.1016/j.jqsrt.2005.05.057
Autor:
M. J. May, M. Leigheb, G. Mazzitelli, Michael Finkenthal, M. Mattioli, William H. Goldstein, K. B. Fournier, H. W. Moos, L. Gabellieri, D. Pacella
Publikováno v:
Nuclear Fusion. 42:1299-1303
The current ramp down phase of the Frascati Tokamak Upgrade plasma has been found to exhibit very different particle transport than that which is observed in the Ohmically heated steady state phase. The current ramp down phase can be characterized by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b099d4c928cfcb4f7bc9a8a618adca4
https://doi.org/10.1088/0029-5515/42/11/302
https://doi.org/10.1088/0029-5515/42/11/302
Autor:
B. Sanderson, Gilbert G. Fritz, Raymond G. Cruddace, J. E. Spragg, Herbert Gursky, Martin A. Barstow, Michael P. Kowalski, J. L. Culhane, Joseph F. Kordas, J. A. Tandy, William H. Goldstein, Charles M. Brown, Nigel Bannister, George W. Fraser, Troy W. Barbee, Jonathan S. Lapington, Daryl J. Yentis
Publikováno v:
The Astrophysical Journal. 565:L47-L50
We report a high-resolution (R=3000-4000) spectroscopic observation of the DA white dwarf G191-B2B in the extreme ultraviolet band 220-245 A. A low- density ionised He component is clearly present along the line-of-sight, which if completely interste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::163532c038f3af369221ecf8d29386ca
https://doi.org/10.1086/339054
https://doi.org/10.1086/339054
Autor:
M. Mattioli, Duane A. Liedahl, D. Pacella, K. B. Fournier, M. Leigheb, William H. Goldstein, M. J. May, Michael Finkenthal
Publikováno v:
The Astrophysical Journal. 561:1144-1153
We present measurements of density-sensitive extreme-ultraviolet line ratios from highly charged L-shell iron ions in the Frascati Tokamak Upgrade plasma at densities more than a factor of 2 higher than previously observed. These observations are dir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b79d472bde972ce48b48e52cd620717b
https://doi.org/10.1086/323371
https://doi.org/10.1086/323371
Autor:
Vlad Soukhanovskii, M. Leigheb, M. J. May, K. B. Fournier, Michael Finkenthal, William H. Goldstein, D. Pacella
Publikováno v:
The Astrophysical Journal. 550:L117-L120
We present the Δn = 0 (n = 3 to n = 3) EUV spectra of M-shell iron ions from a tokamak plasma obtained during the "ramp-down" phase of the discharge. The fractional ion abundances for K-like Fe+7 to Si-like Fe+12 are found from fitting model spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14b3cc20ac5f748f67e37f594958b5ea
https://doi.org/10.1086/319483
https://doi.org/10.1086/319483
Autor:
Vlad Soukhanovskii, M. J. May, Vyacheslav N. Shlyaptsev, William H. Goldstein, Michael Finkenthal, Dan Stutman, R Vero, K. B. Fournier
Publikováno v:
Physica Scripta. 62:301-306
Kr-like ions are good candidates for FUV lasing since they can be produced in plasmas quite easily. We present results from a spectroscopic investigation of Y IV emission from a high current density, cold cathode reflex discharge. The Y II to Y V emi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fae937bb065ac18cb2740e15c86b700c
https://doi.org/10.1238/physica.regular.062a00301
https://doi.org/10.1238/physica.regular.062a00301
Autor:
K. B. Fournier, William H. Goldstein, D. Pacella, Michael Finkenthal, M. Mattioli, M. J. May, M. Zerbini
Publikováno v:
Physical Review E. 61:5701-5709
This work presents and interprets, by means of detailed atomic calculations, observations of L-shell $(n=\stackrel{\ensuremath{\rightarrow}}{3}n=2)$ transitions in highly ionized molybdenum, the main intrinsic heavy impurity in the Frascati tokamak u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ca1b9394d896ac6523eb43b08d70d39
https://doi.org/10.1103/physreve.61.5701
https://doi.org/10.1103/physreve.61.5701
Autor:
G. Mazzitelli, Michael Finkenthal, M. J. May, K. B. Fournier, J. E. Rice, William H. Goldstein, B. C. Gregory, H. W. Moos, H. Kroegler, D. Pacella
Publikováno v:
Physical Review E. 61:3042-3052
The spatial brightness profiles of Ar and Kr ions have been measured during a set of experiments in which these gases were puffed into FTU (Frascati Tokamak Upgrade) and Alcator C-Mod tokamak plasmas. These profiles were measured by spatially scannin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d62f364041b181c6a18f1b4ec556451c
https://doi.org/10.1103/physreve.61.3042
https://doi.org/10.1103/physreve.61.3042
Autor:
K. B. Fournier, Vlad Soukhanovskii, H. W. Moos, D. Pacella, Michael Finkenthal, William H. Goldstein, S. Lippmann, G. Mazzitelli, M. J. May
Publikováno v:
Astronomy and Astrophysics Supplement Series. 142:95-106
Benchmarking and validation of atomic calcula- tions are crucial for understanding the properties of astro- physical and fusion plasmas. An extended re-evaluation of a previous experimental study of the Ca XVIII {C aXII extreme ultraviolet (XUV) spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2003a2d62fce675f4fe2da0c048937b7
https://doi.org/10.1051/aas:2000140
https://doi.org/10.1051/aas:2000140
Autor:
K. B. Fournier, Michael Finkenthal, J.L. Terry, J.A. Goetz, M. J. May, D. Pacella, William H. Goldstein, Earl Marmar
Publikováno v:
Plasma Physics and Controlled Fusion. 41:45-63
A new radiative cooling curve for molybdenum, determined from the Hebrew University, Jerusalem - Lawrence Livermore atomic code (HULLAC) has been used to estimate the radiative power losses from various ion cyclotron resonance frequency (ICRF) and oh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9c044c0513c5399c603f3aa76a178d9
https://doi.org/10.1088/0741-3335/41/1/004
https://doi.org/10.1088/0741-3335/41/1/004