Observation of He-like Satellite Lines of the H-like Potassium K xix Emission | Zendy

M. E. Weller | Zendy; P. Beiersdörfer | Zendy; T. Lockard | Zendy; G. V. Brown | Zendy; Andrew McKelvey | Zendy; Joseph Nilsen | Zendy; R. Shepherd | Zendy; V. Soukhanovskii | Zendy; M. P. Hill | Zendy; L. M. R. Hobbs | Zendy; D. Burridge | Zendy; D. J. Hoarty | Zendy; John Morton | Zendy; L. A. Wilson | Zendy; S. J. Rose | Zendy; Peter Hatfield | Zendy

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Observation of He-like Satellite Lines of the H-like Potassium K xix Emission

Author(s) -

M. E. Weller,

P. Beiersdörfer,

T. Lockard,

G. V. Brown,

Andrew McKelvey,

Joseph Nilsen,

R. Shepherd,

V. Soukhanovskii,

M. P. Hill,

L. M. R. Hobbs,

D. Burridge,

D. J. Hoarty,

John Morton,

L. A. Wilson,

S. J. Rose,

Peter Hatfield

Publication year - 2019

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.3847/1538-4357/ab2dff

Subject(s) - physics , satellite , wavelength , spectrometer , emission spectrum , astrophysics , atomic physics , spectral line , astronomy , optics

We present measurements of the H-like potassium (K xix) X-ray spectrum and its He-like (K xviii) satellite lines, which are situated in the wavelength region between 3.34 and 3.39 A, 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.

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