Electron-loss-to-continuum cusp in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">U</mml:mi><mml:msup><mml:mrow /><mml:mrow><mml:mn>88</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:mspace width="0.16em" /><mml:mo>+</mml:mo><mml:mspace width="0.16em" /></mml:mrow><mml:msub><mml:mi mathvariant="normal">N</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>collisions

Hillenbrand, P.‐M.; Hagmann, S.; Voitkiv, A. B.; Najjari, B.; Banaś, D.; Blumenhagen, K. H.; Brandau, C.; Chen, W.; Filippo, E. De; Gumberidze, A.; Guo, Donghui; Kozhuharov, C.; Lestinsky, M.; Litvinov, Yu. A.; Müller, A.; Rothard, H.; Schippers, S.; Schöffler, M. S.; Spillmann, U.; Trotsenko, S.; Zhu, Xiaolong; Stöhlker, Th.

doi:10.1103/physreva.90.042713

Cited by 21 publications

(26 citation statements)

References 80 publications

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“…[40], and the analysis of the ELC data has been discussed in Ref. [39]. The relative experimental data presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[39]. The discrepancy between the similar experimental cross sections for the three processes 4 with respect to the projectile beam: without any coincidence condition (black circles), i.e., background corrected singles, and individual contributions of nonradiative elec tron capture to continuum (red triangles), radiative electron capture to continuum (blue diamonds) [40], and electron loss to continuum (green squares) [39]. Here, the RECC data from &y = +90° were used.…”

Section: Resultsmentioning

confidence: 99%

“…The momentum axis was converted into an energy axis and then calibrated using the ELC spectra measured simultaneously [39], For this reason, berylliumlike projectiles U8S+ were used in this experiment instead of bare projectiles U92+. The ELC cusp has a quasisymmetric shape, such that its maximum is at Eq, independent of the precision to which Eq is determined.…”

Section: Discussionmentioning

confidence: 99%

“…Details of the experiment, with the electron spectrometer installed at the Experimental Storage Ring (ESR), have been described in Refs. [39,40], Briefly, a beam of berylliumlike U8S+ was injected into the storage ring at 90.38 MeV/u and cooled by electron cooling. The ion beam was directed to intersect a supersonic gas-jet target of molecular nitrogen N2 .…”

Section: Methodsmentioning

confidence: 99%

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Electron-capture-to-continuum cusp inU88++N2collisions

et al. 2015

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For the collision system U88+ + N2 at a collision energy of 90 MeV/u, the energy distribution of electrons being nonradiatively captured from the target into the projectile continuum has been measured under an angle of 0° with respect to the projectile beam axis. This measurement of the electron-capture-to-continuum cusp with the highest effective projectile charge Z f = 88 at a near-relativistic collision velocity of f « 0.41 is shown to be characterized by a strong asymmetry in the cusp shape. By comparing the data to measurements of the radiative-electron-capture-to-continuum cusp for the same collision system, the opposite asymmetry of the cusp is traced back to the varying underlying mechanisms. The experimental results are compared with the two theoretical calculations available for this process, one of them in the semirelativistic impulse approximation and the other in the nonrelativistic continuum-distorted-wave approach. A corresponding fully relativistic treatment may be motivated by the presented experimental data.

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“…[40], and the analysis of the ELC data has been discussed in Ref. [39]. The relative experimental data presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Electron-capture-to-continuum cusp inU88++N2collisions

et al. 2015

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“…These target densities resulted in a significant reduction of ion beam lifetimes to typical values of about a few seconds (compared to roughly 20 s without the gas target). The best target-beam overlap was found by scanning the ion beam axially across the target region in the interaction chamber while monitoring variations of the beam lifetime as well as the count rates of a photomultiplier and an electron spectrometer [37,38] observing the interaction region. More specifically, the beam lifetime was deduced from measuring the ion beam intensity as a function of time using a DC current transformer and the integrated Schottky signal of the new resonant pickup at the ESR [39].…”

Section: Measurement Technique and Data Analysismentioning

confidence: 99%

Total projectile electron loss cross sections ofU28+ions in collisions with gaseous targets ranging from hydrogen to krypton

Weber

Herdrich

DuBois

et al. 2015

Phys. Rev. ST Accel. Beams

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Beam lifetimes of stored U 28þ ions with kinetic energies of 30 and 50 MeV=u, respectively, were measured in the experimental storage ring of the GSI accelerator facility. By using the internal gas target station of the experimental storage ring, it was possible to obtain total projectile electron loss cross sections for collisions with several gaseous targets ranging from hydrogen to krypton from the beam lifetime data. The resulting experimental cross sections are compared to predictions by two theoretical approaches, namely the CTMC method and a combination of the DEPOSIT code and the RICODE program.

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Fast Ion-Atom Collisions: Electron Spectroscopy of Mixed-State Beams

Benis

2024

Advances in Atomic Molecular Collisions

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Electron-loss-to-continuum cusp inU88++N2collisions

Cited by 21 publications

References 80 publications

Electron-capture-to-continuum cusp inU88++N2collisions

Electron-capture-to-continuum cusp inU88++N2collisions

Total projectile electron loss cross sections ofU28+ions in collisions with gaseous targets ranging from hydrogen to krypton

Fast Ion-Atom Collisions: Electron Spectroscopy of Mixed-State Beams

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