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You searched on: Author: james porto

Displaying records 41 to 50 of 58 records.
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41. Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap
Published: 12/1/2000
Authors: J M Laming, I Kink, E Takacs, James V Porto, John D Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, A K Bhatia, G. A. Doschek, N. Madden, D Landis, J. Beeman, E. E. Haller
Abstract: We report new observations of emission line intensity ratios of Fe XVII under controlled experimental conditions, using the National Institute of Standards and Technology electron beam ion trap (EBIT) with a microcalorimeter detector. . . .Both R-mat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840595

42. Laboratory Astrophysics Survey of Key X-Ray Diagnostic Lines Using a Microcalorimeter on an Electron Beam Ion Trap
Published: 9/1/2000
Authors: E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, E Takacs, John D Gillaspy, James V Porto, I Kink, J M Laming, N. Madden, D Landis, J. Beeman, E. E. Haller
Abstract: Cosmic plasma conditions created in an Electron Beam Ion Trap (EBIT) make it possible to simulate the dependencies of Key diagnostic x-ray lines on density, temperature, and excitation conditions that exist in astrophysical sources. We used a microc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840413

43. Direct Imaging of Highly Charged Ions in an Electron Beam Ion Trap
Published: 8/1/2000
Authors: James V Porto, I Kink, John D Gillaspy
Abstract: We have directly observed the ion cloud distribution in an electron beam ion trap using visible and ultraviolet fluorescence from lines in the ground term of Ar^u13+^,^ Xe^u31+^ and Xe^u32+^ ions. Using a gated intensified charge coupled device came ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840406

44. UV Light From the Ground Term of Ti-Like Ytterbium, Tungsten, and Bismuth
Published: 5/1/2000
Authors: James V Porto, John D Gillaspy
Abstract: We have used an electron beam ion trap (EBIT) to measure the wavelength of the J=2 to j=3 magnetic dipole transition in the 3d^u4^ ground term of Ti-like Ytterbium and Tungsten. These results extend the range of measurements of this line along the i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840390

45. Direct Imaging of Static and Dynamic Ion Cloud Distributions in an Electron Beam Ion Trap
Published: 2/1/2000
Author: James V Porto
Abstract: We have used long-lived uv transitions in the ground term of Ars^d13+^, Xe^d31+^ and Xe^d32+^ to directly image highly charged ions within an electron beam ion trap (EBIT). Using an intensified CCD camera, we have the capability to measure both stati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840427

46. Direct imaging of highly charged ions in an electron beam ion trap
Published: 1/1/2000
Authors: James V Porto, I Kink, John D Gillaspy
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=102409

47. Emission-Line Intensity Ratios in Fe xvii Observed with a Microcalorimeter on an Electron Beam Ion Trap
Published: 1/1/2000
Authors: J M Laming, I Kink, E Takacs, James V Porto, John D Gillaspy, E Silver, H W Schnopper, S Brickhouse Bandler, S Murray, M Barbera, A K Bharia, G. A. Doschek, N Madden, D Landis, J Beeman, E E Haller
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=102275

48. Laboratory Astrophysics Survey of Key Diagnostic Lines Using a Microcalorimeter on an Electron Beam Ion Trap
Published: 1/1/2000
Authors: E Silver, H W Schnopper, S Bandler, N Brickhouse, S Murray, M Barbera, E Takacs, John D Gillaspy, James V Porto, I Kink, J M Laming, N Madden, D Landis, J Beeman, E E Haller
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=102511

49. Laboratory Astrophysics Survey of Key X-Ray Diagnostic Lines Using a Microcalorimeter on an Electron Beam Ion Trap
Published: 1/1/2000
Authors: E Silver, H W Schnopper, S Bandler, N Brickhouse, S Murray, M Barbara, E Takacs, John D Gillaspy, James V Porto, I Kink, J M Laming, N Madden, D Landis, J Beeman, E E Haller
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=102510

50. Laboratory Astrophysics and Microanalysis With NTD-Germanium-Based X-Ray Microcalorimeters
Published: 1/1/2000
Authors: E Silver, H. Schnopper, Simon R. Bandler, S Murray, N. Madden, D Landis, J. Beeman, E. E. Haller, M Barbera, G Tucker, John D Gillaspy, E Takacs, James V Porto
Abstract: With the ability to create cosmic plasma conditions in the laboratory it is possible to investigate the dependencies of key diagnostic x-ray lines on density, temperature, and excitation conditions that exist in astrophysical sources with x-ray optic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840376



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