Publications

Displaying 1 - 25 of 127

Analysis of EUV spectra from N-shell tungsten ions observed with an electron beam ion trap

July 3, 2018

Author(s)

Tapasi Das, Yuri Podpaly, Joseph Reader, John D. Gillaspy, Yuri Ralchenko

Extreme ultraviolet spectra of highly charged tungsten ions were produced with an electron beam ion trap at the National Institute of Standards and Technology

Spectrum and Energy Levels of Five-Times Ionized Zirconium (Zr VI)

January 5, 2016

Author(s)

Joseph Reader, Mark D. Lindsay

The spectrum of five-times-ionized zirconium Zr VI was observed from 160 Å to 2000 Å with sliding spark discharges on 10.7-m normal- and grazing-incidence

NIST program of spectroscopic data for light elements of fusion interest

January 15, 2015

Author(s)

Joseph Reader, Alexander Kramida, Yuri Ralchenko, Wolfgang L. Wiese, Jeffrey R. Fuhr

This paper summarizes work at the National Institute of Standards and Technology (NIST) in support of the IAEA Coordinated Research Project on Light Element

Measurements and identifications of extreme ultraviolet spectra of highly-charged ions of Sm and Er

December 31, 2014

Author(s)

Yuri A. Podpaly, John D. Gillaspy, Joseph Reader, Yuri Ralchenko

We report on the spectroscopic measurements of highly charged samarium and erbium performed at the National Institute of Standards and Technology (NIST)

EUV spectra of Rb-like to Ni-like dysprosium ions in an electron beam ion trap

August 12, 2014

Author(s)

Deirdre Kilbane, G. O'Sullivan, Yuri A. Podpaly, John D. Gillaspy, Joseph Reader, Yuri Ralchenko

Extreme ultraviolet radiation emitted from highly-charged dysprosium ions was measured at the National Institute of Standards and Technology. The ions were

Extreme ultraviolet spectra and analysis of ¿n=0 transitions in highly charged barium

July 4, 2014

Author(s)

Joseph Reader, John D. Gillaspy, Dmitry D. Osin, Yuri Ralchenko

Extreme ultraviolet spectra of highly charged barium atoms were produced with an electron beam ion trap (EBIT) and recorded with a flat-field grazing-incidence

EUV measurements of Kr XXI--Kr XXXIV and the effect of a magnetic-dipole line on allowed transitions

April 24, 2014

Author(s)

Yuri A. Podpaly, John D. Gillaspy, Yuri Ralchenko, Joseph Reader

We observed and analyzed the extreme-ultraviolet spectra of highly-charged ions of Kr XXI to Kr XXXIV produced in an Electron Beam Ion Trap (EBIT). The beam

EUV spectra from N-shell ions of Gd, Dy and W

September 23, 2013

Author(s)

Deirdre Kilbane, John D. Gillaspy, Yuri Ralchenko, Joseph Reader, G. O'Sullivan

Measurements of extreme ultraviolet radiation from gadolinium, dysprosium and tungsten ions with an open n=4 shell were performed at the National Institute of

Magnetic-dipole lines in 3dn ions of high-Z elements: identification, diagnostic potential, and dielectronic resonances

September 23, 2013

Author(s)

Yuri Ralchenko, John D. Gillaspy, Joseph Reader, Dmitry D. Osin, John J. Curry, Yuri A. Podpaly

We present a review of measurements and analyses of extreme-ultraviolet magneticdipole (M1) lines in 50-60-times ionized atoms of tungsten, hafnium, tantalum

Transition Energies of the D-lines in Na-like Ions

June 5, 2013

Author(s)

John D. Gillaspy, Dmitry D. Osin, Yuri Ralchenko, Joseph Reader, S A. Blundell

The NIST electron beam ion trap (EBIT) was used to measure the D1 (3s-3p1/2) and D2 (3s-3p3/2) transitions in Na-like ions of xenon, barium, samarium

EUV magnetic-dipole lines from highly-charged high-Z ions with an open $3d$ shell

November 27, 2012

Author(s)

Yuri Ralchenko, John D. Gillaspy, Joseph Reader, Dmitry D. Osin

The electron beam ion trap (EBIT) at the National Institute of Standards and Technology was used to produce highly-charged ions of hafnium, tantalum and gold

Extreme Ultraviolet Spectra of Highly Charged Xenon Observed with an Electron Beam Ion Trap

November 23, 2012

Author(s)

Dmitry D. Osin, Joseph Reader, John D. Gillaspy, Yuri Ralchenko

Extreme ultraviolet spectra of highly charged xenon atoms were produced with an electron beam ion trap (EBIT) at the National Institute of Standards and

EUV spectra of Rb-like to Cu-like gadolinium ions in an electron beam ion trap

October 8, 2012

Author(s)

Yuri Ralchenko, Deirdre Kilbane, G. O'Sullivan, John D. Gillaspy, Joseph Reader

Measurements of extreme ultraviolet radiation from highly-charged gadolinium ions were made at the National Institute of Standards and Technology. The ions were

Light, atoms and nuclei: the optical discovery of deuterium

May 1, 2012

Author(s)

Charles W. Clark, Joseph Reader

Deuterium was discovered by atomic spectroscopy 80 years ago, and led to the rapid development of nuclear energy and isotope chemistry. Atomic spectroscopy of

Spectroscopy of diagnostically-important magnetic-dipole lines in highly-charged 3d^n ions of tungsten

March 31, 2011

Author(s)

Yuri Ralchenko, Ilija Draganic, Dmitry D. Osin, John D. Gillaspy, Joseph Reader

An electron beam ion trap (EBIT) is used to measure extreme ultraviolet spectra between 10 nm and 25 nm from highly-charged ions of tungsten with an open 3d

EUV Spectral Lines of Highly-Charged Hf, Ta and Au Ions Observed with an Electron Beam Ion Trap

January 12, 2011

Author(s)

Ilija Draganic, Yuri Ralchenko, Joseph Reader, John D. Gillaspy, Joseph N. Tan, Joshua M. Pomeroy, Samuel M. Brewer, Dmitry D. Osin

Extreme ultraviolet spectra of highly charged hafnium, tantalum, and gold were produced with an electron beam ion trap (EBIT) at the National Institute of

Measurement of the D Line Doublet in High-Z Highly-Charged Sodium-like Ions

July 8, 2009

Author(s)

John D. Gillaspy, Ilija Draganic, Yuri Ralchenko, Joseph Reader, Joseph N. Tan, Joshua M. Pomeroy, Samuel M. Brewer

We report a direct observation of the D line doublet of sodium-like ions with Z≥72. Spectra in the 1 nm to 9 nm spectral range are presented showing the widely

Spectra of W³⁹⁺-W⁴⁷⁺ in the 12 nm to 20 nm Region Observed With an EBIT Light Source

October 14, 2007

Author(s)

Yuri Ralchenko, Joseph Reader, Joshua M. Pomeroy, Joseph N. Tan, John D. Gillaspy

We observed spectra of highly ionized tungsten in the extreme ultraviolet with an electron beam ion trap (EBIT) and a grazing incidence spectrometer at the

Spectral Radiance of Strong Lines in Positive Column Mercury Discharges With Argon Carrier Gas

September 1, 2006

Author(s)

Craig J. Sansonetti, Joseph Reader

The spectral radiance of the 185-nm and 254-nm lines in two positive column mercury discharge lamps was measured over a wide range of operating conditions. The

Extended EUV and UV Spectrum of Ne II

July 1, 2006

Author(s)

Alexander Kramida, C M. Brown, Uri Feldman, Joseph Reader

The extreme ultraviolet (EUV) spectrum of Ne emitted by a Penning discharge has been recorded at high resolution with a 10.7 m grazing incidence spectrometer

Performance of the GHRS Pt-Ne Hollow-Cathode Lamps After Their Return From Space and Comparison With Archival Data

May 1, 2006

Author(s)

F Kerber, D Lindler, P Bristow, Gillian Nave, Joseph Reader, Craig J. Sansonetti, D Lembke, S Heap, Michael R. Rosa, H J. Wood

The Space Telescope European Co-ordinating Facility (ST-ECF) and the National Institute of Standards and Technology (NIST) are collaborating to study hollow