Gas-pressure dependence of charge-state fractions and mean charges of 1.4 MeV/u-uranium ions stripped in molecular hydrogen

Shevelko, V. P.; Winckler, N.; Tolstikhina, I. Yu.

doi:10.1016/j.nimb.2016.04.025

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…This allows to apply dedicated cross‐section predictions tailored to the specific needs of the experiment and to overcome the limitations of the commonly used codes, which have built‐in charge‐exchange cross‐sections covering only a specific parameter range. The BREIT code was recently applied for charge state evolution studies in a wide energy range from kinetic ion energies of few MeV u −1 [ 7 ] to mildly relativistic ions [ 8 ] up to highly relativistic kinetic energies. [ 9 ] However, one has to keep in mind that the predictive power of the BREIT code is limited by the reliability of the underlying cross sections.…”

Section: Introductionmentioning

confidence: 99%

Charge‐State Distributions of Highly Charged Lead Ions at Relativistic Collision Energies

et al. 2021

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This study describes the charge‐state evolution of relativistic lead ions passing through a thin aluminum stripper foil. It is motivated by the Gamma Factory project at CERN, where optical laser pulses will be converted into intense gamma‐ray beams with energies up to a few hundred MeV, achieved via excitation of atomic transitions in few‐electron heavy‐ions at highly relativistic velocities. The recently developed BREIT code is employed together with theoretical cross‐sections for single‐electron loss and capture of the projectile ions. All charge‐states starting from Pb54 + up to bare ions are considered at kinetic projectile energies of 4.2 and 5.9 GeV u−1. During recent Gamma Factory beam tests, the calculated preparatory predictions allow to effectively produce Pb80 + and Pb81 + ions from Pb54 + in the transfer beam line between the PS and SPS synchrotron accelerators at CERN and consequently, to store partially stripped ions in the LHC for the very first time. Reasonable agreement is found between the calculations and the very few experimental data available. The study lays the groundwork to optimize the yields of charge states of interest for experiments within the future Gamma Factory project, including the upcoming Gamma Factory Proof‐of‐Principle experiment for which predictions for the production of Pb79 + are presented.

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Section: Introductionmentioning

confidence: 99%

Charge‐State Distributions of Highly Charged Lead Ions at Relativistic Collision Energies

et al. 2021

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“…Thus, it is possible to increase the effective gas density for the stripping process significantly, without exceeding the limitations of the pumping system. The increased gas densities allow for using low-Z targets, like H 2 and He, which were presumed to be promising stripper targets based on theoretical predictions [13] and similar measurements at higher beam energies at RIKEN [14]. Their use was strongly limited before due to the high gas load of the jet-based gas injection [15].…”

Section: Introductionmentioning

confidence: 99%

Measurements of charge state distributions of 0.74 and 1.4 MeV/u heavy ions passing through dilute gases

Scharrer

Düllmann

Barth

et al. 2017

Phys. Rev. Accel. Beams

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In many modern heavy-ion accelerator facilities, gas strippers are used to increase the projectile charge state for improving the acceleration efficiency of ion beams to higher energies. For this application, the knowledge on the behavior of charge state distributions of heavy-ions after passing through dilute gases is of special interest. Bi on H 2 and He gas, which are highly beneficial, e.g., for the production of beams of high intensities in accelerators.

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BREIT code: Analytical solution of the balance rate equations for charge-state evolutions of heavy-ion beams in matter

Winckler

Rybalchenko

Shevelko

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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Gas-pressure dependence of charge-state fractions and mean charges of 1.4 MeV/u-uranium ions stripped in molecular hydrogen

Cited by 8 publications

References 23 publications

Charge‐State Distributions of Highly Charged Lead Ions at Relativistic Collision Energies

Charge‐State Distributions of Highly Charged Lead Ions at Relativistic Collision Energies

Measurements of charge state distributions of 0.74 and 1.4 MeV/u heavy ions passing through dilute gases

BREIT code: Analytical solution of the balance rate equations for charge-state evolutions of heavy-ion beams in matter

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