skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High-resolution Charge Exchange Spectra with L-shell Nickel Show Striking Differences from Models

Abstract

This work reports on the first high-resolution laboratory spectra of X-ray emission following L-shell charge exchange between nickel ions and neutral H2 and He. We employ the commonly used charge exchange models found in xspec and spex, acx and spex-cx, to simulate our experimental results. We show that significant differences between data and models exist in both line energies and strengths. Specifically, we find that configuration mixing may play an important role in generating lines from core-excited states, and may be improperly treated in models. These conclusions imply that if applied to astrophysical data, these models may lead to incorrect assumptions of the physical and chemical parameters of the region of interest.

Authors:
 [1]; ORCiD logo [2];  [2]; ORCiD logo [3]; ORCiD logo [2];  [4];  [4];  [5];  [2];  [4]
  1. IRAP CNRS, Toulouse (France)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Universities Space Research Association, Columbia, MD (United States)
  4. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  5. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); CRESST and Univ. of Maryland Baltimore County, Baltimore, MD (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1545290
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Letters
Additional Journal Information:
Journal Volume: 868; Journal Issue: 2; Journal ID: ISSN 2041-8213
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; atomic processes; line: formation; methods: laboratory: atomic

Citation Formats

Betancourt-Martinez, G. L., Beiersdorfer, P., Brown, G. V., Cumbee, R. S., Hell, N., Kelley, R. L., Kilbourne, C. A., Leutenegger, M. A., Lockard, T. E., and Porter, F. S. High-resolution Charge Exchange Spectra with L-shell Nickel Show Striking Differences from Models. United States: N. p., 2018. Web. doi:10.3847/2041-8213/aaef82.
Betancourt-Martinez, G. L., Beiersdorfer, P., Brown, G. V., Cumbee, R. S., Hell, N., Kelley, R. L., Kilbourne, C. A., Leutenegger, M. A., Lockard, T. E., & Porter, F. S. High-resolution Charge Exchange Spectra with L-shell Nickel Show Striking Differences from Models. United States. doi:10.3847/2041-8213/aaef82.
Betancourt-Martinez, G. L., Beiersdorfer, P., Brown, G. V., Cumbee, R. S., Hell, N., Kelley, R. L., Kilbourne, C. A., Leutenegger, M. A., Lockard, T. E., and Porter, F. S. Tue . "High-resolution Charge Exchange Spectra with L-shell Nickel Show Striking Differences from Models". United States. doi:10.3847/2041-8213/aaef82. https://www.osti.gov/servlets/purl/1545290.
@article{osti_1545290,
title = {High-resolution Charge Exchange Spectra with L-shell Nickel Show Striking Differences from Models},
author = {Betancourt-Martinez, G. L. and Beiersdorfer, P. and Brown, G. V. and Cumbee, R. S. and Hell, N. and Kelley, R. L. and Kilbourne, C. A. and Leutenegger, M. A. and Lockard, T. E. and Porter, F. S.},
abstractNote = {This work reports on the first high-resolution laboratory spectra of X-ray emission following L-shell charge exchange between nickel ions and neutral H2 and He. We employ the commonly used charge exchange models found in xspec and spex, acx and spex-cx, to simulate our experimental results. We show that significant differences between data and models exist in both line energies and strengths. Specifically, we find that configuration mixing may play an important role in generating lines from core-excited states, and may be improperly treated in models. These conclusions imply that if applied to astrophysical data, these models may lead to incorrect assumptions of the physical and chemical parameters of the region of interest.},
doi = {10.3847/2041-8213/aaef82},
journal = {The Astrophysical Journal. Letters},
number = 2,
volume = 868,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Subshell-selective electron capture in collisions of C 4+ , N 5+ , O 6+ with H, H 2 and He
journal, December 1985

  • Dijkkamp, D.; Ciric, D.; Vileg, E.
  • Journal of Physics B: Atomic and Molecular Physics, Vol. 18, Issue 24
  • DOI: 10.1088/0022-3700/18/24/017

Overview of the Livermore electron beam ion trap project
journal, May 2003

  • Beiersdorfer, P.; Behar, E.; Boyce, K. R.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 205
  • DOI: 10.1016/S0168-583X(03)00941-8

Total and partial cross sections for charge transfer in collisions of multicharged ions with atomic hydrogen
journal, November 1979


Performance of the EBIT calorimeter spectrometer
journal, October 2008

  • Porter, Frederick Scott; Gygax, John; Kelley, Richard L.
  • Review of Scientific Instruments, Vol. 79, Issue 10
  • DOI: 10.1063/1.2957925

Observation of highly disparate K -shell x-ray spectra produced by charge exchange with bare mid- Z ions
journal, November 2014

  • Betancourt-Martinez, Gabriele L.; Beiersdorfer, Peter; Brown, Gregory V.
  • Physical Review A, Vol. 90, Issue 5
  • DOI: 10.1103/PhysRevA.90.052723

The origin of the local 1/4-keV X-ray flux in both charge exchange and a hot bubble
journal, July 2014

  • Galeazzi, M.; Chiao, M.; Collier, M. R.
  • Nature, Vol. 512, Issue 7513
  • DOI: 10.1038/nature13525

X-ray emission from charge exchange in the Cygnus Loop SNR
journal, March 2015

  • Roberts, Shawn R.; Wang, Q. Daniel
  • Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 2
  • DOI: 10.1093/mnras/stv319

Resolving the Origin of the Diffuse soft X-Ray Background
journal, May 2014

  • Smith, Randall K.; Foster, Adam R.; Edgar, Richard J.
  • The Astrophysical Journal, Vol. 787, Issue 1
  • DOI: 10.1088/0004-637X/787/1/77

A new paradigm for the X-ray emission of O stars from XMM-Newton observations of the O9.7 supergiant ζ  Orionis
journal, November 2006


Charge‐Exchange Spectra of Hydrogenic and He‐like Iron
journal, November 2005

  • Wargelin, B. J.; Beiersdorfer, P.; Neill, P. A.
  • The Astrophysical Journal, Vol. 634, Issue 1
  • DOI: 10.1086/496874

X-Ray Emission Following Low-Energy Charge Exchange Collisions of Highly Charged Ions
journal, December 2000


Observation of Lifetime-Limited X-Ray Linewidths in Cold Highly Charged Ions
journal, December 1996


Solar system X-rays from charge exchange processes: Solar system X-rays from charge exchange processes
journal, April 2012

  • Dennerl, K.; Lisse, C. M.; Bhardwaj, A.
  • Astronomische Nachrichten, Vol. 333, Issue 4
  • DOI: 10.1002/asna.201211663

A pulsating auroral X-ray hot spot on Jupiter
journal, February 2002

  • Gladstone, G. R.; Waite, J. H.; Grodent, D.
  • Nature, Vol. 415, Issue 6875
  • DOI: 10.1038/4151000a

Temperature of the ions produced and trapped in an electron‐beam ion trap
journal, January 1995

  • Beiersdorfer, P.; Decaux, V.; Elliott, S. R.
  • Review of Scientific Instruments, Vol. 66, Issue 1
  • DOI: 10.1063/1.1146391

The Chandra Iron‐L X‐Ray Line Spectrum of Capella
journal, February 2001

  • Behar, Ehud; Cottam, Jean; Kahn, Steven M.
  • The Astrophysical Journal, Vol. 548, Issue 2
  • DOI: 10.1086/318999

State-selective electron-capture cross section measurements for low-energy collisions of He-like ions on H 2
journal, November 2000

  • Lubinski, G.; Juhász, Z.; Morgenstern, R.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 33, Issue 23
  • DOI: 10.1088/0953-4075/33/23/302

Wavelength Measurements of Ni L‐Shell Lines between 9 and 15 A
journal, March 2007

  • Gu, M. F.; Beiersdorfer, P.; Brown, G. V.
  • The Astrophysical Journal, Vol. 657, Issue 2
  • DOI: 10.1086/511065

Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2
journal, October 1996


X-ray emission cross sections following charge exchange by multiply charged ions of astrophysical interest
journal, March 2007


Can Charge Exchange Explain Anomalous soft X-Ray Emission in the Cygnus Loop?
journal, May 2014


Unexpected X-Ray Emission due to Formation of Bound Doubly Excited States
journal, December 2000


Implications of Solar Wind Composition for Cometary X‐Rays
journal, November 2000

  • Schwadron, N. A.; Cravens, T. E.
  • The Astrophysical Journal, Vol. 544, Issue 1
  • DOI: 10.1086/317176

State-selective electron capture in atom-highly charged ion collisions
journal, January 1985


Low-Energy State-Selective Charge Transfer by Multiply Charged Ions
journal, January 2001


X-ray signatures of charge transfer reactions involving cold, very highly charged ions
conference, January 2000

  • Beiersdorfer, P.
  • The 21st international conference on the physics of electronic and atomic collisions (21 IPEAC), AIP Conference Proceedings
  • DOI: 10.1063/1.1302692

Comet Hyakutake x-ray source: Charge transfer of solar wind heavy ions
journal, January 1997

  • Cravens, T. E.
  • Geophysical Research Letters, Vol. 24, Issue 1
  • DOI: 10.1029/96GL03780

Solar flare X-ray spectra from the Solar Maximum Mission Flat Crystal Spectrometer
journal, May 1982

  • Phillips, K. J. H.; Fawcett, B. C.; Kent, B. J.
  • The Astrophysical Journal, Vol. 256
  • DOI: 10.1086/159950

Plasma code for astrophysical charge exchange emission at X-ray wavelengths
journal, March 2016


Laboratory Simulation of Charge Exchange-Produced X-ray Emission from Comets
journal, June 2003


Electron capture by slow multicharged ions in atomic and molecular hydrogen
journal, February 1979


Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster
journal, March 2017

  • Aharonian, F. A.; Akamatsu, H.; Akimoto, F.
  • The Astrophysical Journal, Vol. 837, Issue 1
  • DOI: 10.3847/2041-8213/aa61fa

L x rays from low-energy ( 2 k e V / u ) ions with L -shell vacancies produced in single collisions with atoms and molecules
journal, April 2002


X-ray spectroscopy of stars
journal, May 2009


X-Ray Signature of Charge Exchange in L-Shell Sulfur ions
journal, August 2009


Cross sections for single and multiple electron capture in low energy collisions of C 4+ with H 2 O 2 and N 2
journal, July 1992

  • Soejima, K.; Latimer, C. J.; Okuno, K.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 25, Issue 13
  • DOI: 10.1088/0953-4075/25/13/009

X-Ray Spectral Study of the Extended Emission, ‘the Cap’, Located 11.6 kpc above the Disk of M82
journal, January 2007

  • Tsuru, Takeshi Go; Ozawa, Midori; Hyodo, Yoshiaki
  • Publications of the Astronomical Society of Japan, Vol. 59, Issue sp1
  • DOI: 10.1093/pasj/59.sp1.S269

Cascade transition X-rays from electron capture into highly charged ions in collisions with neutral gas targets
journal, May 2003

  • Tawara, H.; Takács, E.; Ratliff, L. P.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 205
  • DOI: 10.1016/S0168-583X(03)00949-2

X-ray analysis of filaments in galaxy clusters
journal, August 2015

  • Walker, S. A.; Kosec, P.; Fabian, A. C.
  • Monthly Notices of the Royal Astronomical Society, Vol. 453, Issue 3
  • DOI: 10.1093/mnras/stv1829

Coronae of stars with supersolar elemental abundances
journal, May 2015