Physics – Atomic Physics
Scientific paper
2010-08-14
Physics
Atomic Physics
4 pages, 2 figures Accepted for publication in PRL
Scientific paper
We have measured K-shell x-ray spectra of highly ionized argon and phosphorus following charge exchange with molecular hydrogen at low collision energy in an electron beam ion trap using an x-ray calorimeter array with $\sim$6 eV resolution. We find that the emission at the high-end of the Lyman series is greater by a factor of 2 for phosphorus than for argon, even though the measurement was performed concurrently and the atomic numbers are similar. This does not agree with current theoretical models and deviates from the trend observed in previous measurements.
Beiersdorfer Peter
Brown Gregory V.
Kelley Richard L.
Kilbourne Caroline A.
Leutenegger Maurice A.
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