Production and decay of K-shell hollow krypton in collisions with 52 - 197 MeV/u bare xenon ions

Abstract

X-ray spectra of K-shell hollow krypton atoms produced in single collisions with 52 - 197 MeV/u Xe54+ ions are measured in a heavy-ion storage ring equipped with an internal gas-jet target. Energy shifts of the Kα_1,2^s, Kα_1,2^(h,s), and K\b{eta}_1,3^s transitions are obtained. Thus, the average number of the spectator L-vacancies presented during the x-ray emission is deduced. From the relative intensities of the Kα_1,2^s and Kα_1,2^(h,s) transitions, the ratio of K-shell hollow krypton to singly K-shell ionized atoms is determined to be 14 - 24%. In the considered collisions, the K-vacancies are mainly created by the direct ionization which cannot be calculated within the perturbation descriptions. The experimental results are compared with a relativistic coupled channel calculation performed within the independent particle approximation.

5 figures, 9 pages. Accepted by Physical Review A

References in corpus (2)

• Molecular double core-hole electron spectroscopy for chemical analysis
• Relativistic calculations of the x-ray emission following the Xe-Bi${}^{83+}$ collision

Cited by in corpus (4)

• Measurement of ${}^{58}$Ni($p$, $p$)${}^{58}$Ni elastic scattering at low momentum transfer by using the HIRFL-CSR heavy-ion storage ring
• Single and double $K$-shell vacancy production in slow Xe${}^{\text{54+,53+}}$-Xe collisions
• Spectator electron effects on the two-electron one-photon radiative transition process of double K hole state of Xe${}^{q+}$ ion($47\le q\le 52$)
• Employing $p{+}^{58}$Ni elastic scattering for determination of $K$-shell ionization cross section of ${}^{58}$Ni${}^{19+}$ in collisions with hydrogen gas target at 95 MeV/u