Zobrazeno 1 - 10
of 176
pro vyhledávání: '"S. B. Utter"'
Autor:
Yasuyuki Ishikawa, Peter Beiersdorfer, Elmar Träbert, S. B. Utter, Eric H. Pinnington, Marius J. Vilkas
Publikováno v:
Journal of Physics: Conference Series. 58:93-96
Spectroscopic measurements on few-electron high-Z ions take guidance from isoelectronic trends of low-Z to mid-Z ions and from theory. Such wide-range extrapolations, however, are fraught with uncertainty. We discuss as examples some n = 3, Δn = 0 t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::741c8ca171057bd4ded2220ac519fce6
https://doi.org/10.1088/1742-6596/58/1/014
https://doi.org/10.1088/1742-6596/58/1/014
Publikováno v:
Canadian Journal of Physics. 81:911-918
Using an electron-beam ion trap and a flat-field spectrometer, the extreme ultraviolet resonance lines of Zn-like ions of Yb, W, Au, Pb, Th, and U were observed and their wavelengths measured with greatly improved accuracy. The results are compared t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11ee4d901b5257989b7bb1f64e74b882
https://doi.org/10.1139/p03-071
https://doi.org/10.1139/p03-071
Publikováno v:
Canadian Journal of Physics. 80:1503-1515
At the Livermore electron-beam ion-trap facility, extreme-ultraviolet spectra of tungsten have been recorded in the wavelength range 4085 Å. The electron-beam energy was varied systematically to identify the individual spectra of Rb-like W37+ to C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e10940bea8710e70d7a705e7b9efcb42
https://doi.org/10.1139/p02-132
https://doi.org/10.1139/p02-132
Publikováno v:
Review of Scientific Instruments. 73:3737-3741
We present the design, implementation and testing of a high-efficiency, high-resolution transmission grating spectrometer for measurements of near-ultraviolet to visible-range spectra of light from an electron beam ion trap, where geometry is constra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18db3ff861aa10b833ad9338ad8d6cdb
https://doi.org/10.1063/1.1510574
https://doi.org/10.1063/1.1510574
Autor:
Jelle Kaastra, Nancy S. Brickhouse, Peter Beiersdorfer, Steven M. Kahn, Duane A. Liedahl, Gregory V. Brown, S. B. Utter, R. Mewe, Andrea K. Dupree, J. K. Lepson
Publikováno v:
The Astrophysical Journal. 578:648-656
We report on emission spectra of iron in the extreme ultraviolet recorded at an electron density of ~5 × 1011 cm-3 at the Lawrence Livermore electron beam ion trap EBIT-II. We present a summary of observed emission lines, including wavelengths and e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ed96ba36d0e09e2b40f4c18ecd288a5
https://doi.org/10.1086/342274
https://doi.org/10.1086/342274
Autor:
S. B. Utter, J. Tschischgale, H. Schulte-Schrepping, E Förster, D. Klopfel, Gregory V. Brown, Peter Beiersdorfer
Publikováno v:
Canadian Journal of Physics. 80:867-874
The wavelengths of the 1s1/22p1/2 and 1s1/22p3/2 Lyman-α transitions have been measured in hydrogenic silicon with an accuracy of 70 ppm. The measurement was carried out with an electron-beam ion trap with a calibrated double-faced monolithic cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a025d2b47d95bb2b45563c891d8f4675
https://doi.org/10.1139/p02-011
https://doi.org/10.1139/p02-011
Publikováno v:
Physica Scripta. 66:133-139
Using a high-efficiency, high-resolution transmission grating spectrometer, we measured krypton spectra over the wavelength range 3450–3900 A in the low-energy electron beam ion trap EBIT-II at Lawrence Livermore National Laboratory. In total, we a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98ef386f761f26f4ceb13b3d7daf5271
https://doi.org/10.1238/physica.regular.066a00133
https://doi.org/10.1238/physica.regular.066a00133
Publikováno v:
Physica Scripta. 65:252-256
Using the low-energy electron beam ion trap EBIT-II at the Lawrence Livermore National Laboratory, we surveyed neon and argon spectra throughout the wavelength range from 3800 to 6000 A employing a prism spectrograph and a scientific-grade CCD camera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::473fb66e62a7d1961554115dd819e073
https://doi.org/10.1238/physica.regular.065a00252
https://doi.org/10.1238/physica.regular.065a00252
Publikováno v:
Canadian Journal of Physics. 79:153-162
Systematic variation of the electron-beam energy in an electron-beam ion trap has been employed to produce soft-X-ray spectra (20 to 60 Å) of Au with well-defined maximum charge states ranging from Br- to Co-like ions. Guided by large-scale relativi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e93267fa9471ae4f27927aed2875962a
https://doi.org/10.1139/p00-104
https://doi.org/10.1139/p00-104
Publikováno v:
Review of Scientific Instruments. 72:983-986
We made an inventory of krypton spectra over the wavelength range 3700–6000 A for the development of fusion plasma diagnostics. The measurements were performed using a prism spectrometer on the Lawrence Livermore National Laboratory low energy elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c05fedd389e7ac2e520e9d754839a3e
https://doi.org/10.1063/1.1319604
https://doi.org/10.1063/1.1319604