APPA at FAIR: From fundamental to applied research

Stöhlker, Th.; Bagnoud, V.; Blaum, Klaus; Blažević, A.; Bräuning‐Demian, A.; Durante, Marco; Herfurth, F.; Lestinsky, M.; Litvinov, Yu. A.; Neff, S.; Pleskač, R.; Schuch, R.; Schippers, S.; Severin, D.; Tauschwitz, A.; Trautmann, C.; Varentsov, D.; Widmann, E.

doi:10.1016/j.nimb.2015.07.077

Cited by 49 publications

(50 citation statements)

References 15 publications

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“…The achieved statistical uncertainty of 2.2 eV is groundbreaking for a crystal spectrometer operated in the region of hard x-rays of H-like high-Z ions. Since storage rings are currently the only facilities routinely delivering high-Z hydrogenlike ions in large quantities, this measurement represents a very important milestone towards the challenging goal of achieving a sensitivity to higher-order QED effects as it is planned at the FAIR facility [45]. In a future run, particular effort has to be put into avoiding or reducing systematic uncertainties.…”

Section: Discussionmentioning

confidence: 99%

Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold

et al. 2018

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Accurate spectroscopy of highly-charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for the measurement of the 1s Lamb shift in hydrogen-like gold (Au +78 ) in a storage ring through spectroscopy of the Lyman x-rays. This measurement represents the first result obtained for a high-Z element using high-resolution wavelength-dispersive spectroscopy in the hard x-ray regime, paving the way for sensitivity to higherorder QED effects.

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Section: Discussionmentioning

confidence: 99%

Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold

et al. 2018

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“…During the last decade the development of Compton polarimeters within the Stored Particle Atomic Research Collaboration (SPARC) [24] was motivated by the fact that many atomic physics processes lead to the emission of polarized x rays and are in turn also strongly dependent on the polarization of the incoming particles [25,26]. Therefore, precise x-ray polarization measurements may offer new possibilities both for rigorous tests of atomic theory and also for the preparation and monitoring of polarized particle and photon beams, as was recently demonstrated for polarized electron beams [27][28][29] and for synchrotron radiation [30].…”

Section: Introductionmentioning

confidence: 99%

Radiative electron capture as a tunable source of highly linearly polarized x rays

Vockert¹,

Weber²,

Bräuning³

et al. 2019

Phys. Rev. A

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The radiative electron capture (REC) into the K shell of bare Xe ions colliding with a hydrogen gas target has been investigated. In this study, the degree of linear polarization of the K-REC radiation was measured and compared with rigorous relativistic calculations as well as with the previous results recorded for U 92+ . Owing to the improved detector technology, a significant gain in precision of the present polarization measurement is achieved compared to the previously published results. The obtained data confirms that for medium-Z ions such as Xe, the REC process is a source of highly polarized x rays which can easily be tuned with respect to the degree of linear polarization and the photon energy. We argue, in particular, that for relatively low energies the photons emitted under large angles are almost fully linear polarized.

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“…The first acceleration of relativistic heavy ion beams occurred at Princeton in 1971 (White et al, 1971; Isaila et al, 1972), followed by the BEVALAC at Lawrence Berkeley National Laboratory (LBNL), the Helmholtzzentrum für Schwerionenforschung (Helmholtz Center for Heavy Ion Research, formerly Gesellschaft für Schwerionenforschung, GSI), the NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory (BNL), the Heavy Ion Medical Accelerator (HIMAC) at the National Institute of Radiological Sciences (NIRS) in Chiba, Japan, and additional accelerator facilities in Europe and Asia. An active program is currently underway at NSRL, and a future program at higher energy, above 10 GeV/n, is planned at the Facility for Antiproton and Ion Research (FAIR) at the Helmholtzzentrum für Schwerionenforschung (Durante et al, 2007; Stohlker et al, 2015; Sihver, 2008; Chattopadhyay, 2014; Heuser, 2013). …”

Section: Introductionmentioning

confidence: 99%

Galactic cosmic ray simulation at the NASA Space Radiation Laboratory

Norbury

Schimmerling

Slaba

et al. 2016

Life Sciences in Space Research

116

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Most accelerator-based space radiation experiments have been performed with single ion beams at fixed energies. However, the space radiation environment consists of a wide variety of ion species with a continuous range of energies. Due to recent developments in beam switching technology implemented at the NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory (BNL), it is now possible to rapidly switch ion species and energies, allowing for the possibility to more realistically simulate the actual radiation environment found in space. The present paper discusses a variety of issues related to implementation of galactic cosmic ray (GCR) simulation at NSRL, especially for experiments in radiobiology. Advantages and disadvantages of different approaches to developing a GCR simulator are presented. In addition, issues common to both GCR simulation and single beam experiments are compared to issues unique to GCR simulation studies. A set of conclusions is presented as well as a discussion of the technical implementation of GCR simulation.

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APPA at FAIR: From fundamental to applied research

Cited by 49 publications

References 15 publications

Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold

Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: the 1s Lamb shift in hydrogen-like gold

Radiative electron capture as a tunable source of highly linearly polarized x rays

Galactic cosmic ray simulation at the NASA Space Radiation Laboratory

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