Observation of He-like satellite lines of the H-like potassium K XIX emission
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
We present measurements of the H-like potassium (K XIX) X-ray spectrum and its Helike (K XVIII) satellite lines, which are situated in the wavelength region between 3.34 and 3.39
Å, which has been of interest for the detection of dark matter. The measurements were taken
with a high-resolution X-ray spectrometer from targets irradiated by a long-pulse (2 ns) beam
from the Orion laser facility. We obtain experimental wavelength values of dielectronic
recombination satellite lines and show that the ratio of the Lyα lines and their dielectronic
satellite lines can be used to estimate the electron temperature, which in our case was about
1.5±0.3 keV.
Å, which has been of interest for the detection of dark matter. The measurements were taken
with a high-resolution X-ray spectrometer from targets irradiated by a long-pulse (2 ns) beam
from the Orion laser facility. We obtain experimental wavelength values of dielectronic
recombination satellite lines and show that the ratio of the Lyα lines and their dielectronic
satellite lines can be used to estimate the electron temperature, which in our case was about
1.5±0.3 keV.
Date Issued
2019-08-16
Date Acceptance
2019-07-01
Citation
Astrophysical Journal, 2019, 881 (2)
ISSN
0004-637X
Publisher
American Astronomical Society
Journal / Book Title
Astrophysical Journal
Volume
881
Issue
2
Copyright Statement
© 2019. The American Astronomical Society. All rights reserved.
Sponsor
AWE Plc
Grant Number
PHPL_P55497
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
atomic data
dark matter
methods: laboratory: atomic
plasmas
techniques: spectroscopic
X-rays: galaxies: clusters
TRANSITIONS
SPECTRA
0201 Astronomical and Space Sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0306 Physical Chemistry (incl. Structural)
Astronomy & Astrophysics
Publication Status
Published