40 citations · 93 across the 15 of their papers we have counts for
14 papers
Design of a Lamb-Shift Polarimeter for He Ions and Atoms
N. Faatz, R. Engels, C. Kannis +2
In high energy physics experiments He nucleons are suitable to test the internal structure of neutrons, which makes them the perfect substitute. Moreover, it is one of t…
Spin dynamics and ortho-para conversion in HO during the phase transition from gas to solid in external magnetic fields
Chrysovalantis S. Kannis, Ralf Engels, Nicolas Faatz +2
The spin dynamics of water ice in the presence of external magnetic fields are investigated. The employed model is based on the approach introduced by Buntkowsky et al. [Z. Phys. C…
Spin manipulation and nuclear polarization enhancement in particle beams with static magnetic fields
Chrysovalantis S. Kannis, Ralf Engels, Tarek El-Kordy +5
A theoretical study of spin dynamics in non-relativistic particle beams with interacting angular momenta traversing static, spatially varying magnetic fields is presented. The comp…
STORI2024: Tests of Amorphous Carbon-coated Storage Cells for a Polarized Gas Target at LHCb and Further Results
Tarek El-Kordy, Ralf Engels, Nicolas Faatz +7
As the LHC beams cannot be polarized, introducing a dense polarized gas target at the LHCb experiment at CERN, to be operated concurrently with beam-beam collisions, will facilitat…
Production of Spin-Polarized Molecular Beams via Microwave or Infrared Rotational Excitation
C. S. Kannis, T. P. Rakitzis
We propose schemes to produce highly nuclear-spin polarized small molecules in an intense and cold molecular beam via microwave or infrared rotational excitation, followed by hyper…
Theoretical development of a new spin filter generation
Nicolas Faatz, Ralf Engels, Bernd Breitkreuz +2
Since the early days of quantum mechanics hydrogen, as the simplest of all atoms, has been studied or used to investigate new physics. In parallel, this knowledge leads to differen…
A Universal Method to Generate Hyperpolarisation in Beams and Samples
R. Engels, T. El-Kordy, N. Faatz +12
Sizable hyperpolarisation, i.e. an imbalance of the occupation numbers of nuclear spins in a sample deviating from thermal equilibrium, is needed in various fields of science. For…
Preservation of He ion polarization after laser-plasma acceleration
Chuan Zheng, Pavel Fedorets, Ralf Engels +11
The preservation of nuclear spin alignment in plasmas is a prerequisite for important applications, such as energy production through polarized fusion or the acceleration of polari…
A high-density polarized 3He gas-jet target for laser-plasma applications
P. Fedorets, C. Zheng, R. Engels +14
A laser-driven spin-polarized 3He2+ beam source for nuclear-physics experiments and for the investigation of polarized nuclear fusion demands a high-density polarized 3He gas-jet t…
Macroscopic production of spin-polarized hydrogen atoms from the IR-excitation and photodissociation of molecular beams
C. S. Kannis, J. Suarez, T. P. Rakitzis
We describe methods for the production of spin-polarized H and D atoms from the IR-excitation and photodissociation of molecular beams of HBr, HI, and isotopes, incl…
Exploiting the Planck-Einstein Relation
R. Engels, M. Büscher, P. Buske +8
The origin of quantum physics was the discovery of the base unit of electromagnetic action by Max Planck in 1900 when he analyzed the experimental results of the black body rad…
Macroscopic production of highly nuclear-spin-polarized molecules from IR-excitation and photodissociation of molecular beams
C. S. Kannis, T. P. Rakitzis
Pure, highly nuclear-spin-polarized molecules have only been produced with molecular beam-separation methods, with production rates up to s. Here, w…
Production of HD Molecules in Definite Hyperfine Substates
R. Engels, K. Grigoryev, C. S. Kannis +10
Polarized atomic beam sources have been in operation since many years to produce either nuclear polarized atomic hydrogen or deuterium beams. In recent experiments such a source wa…
Ultrahigh-density spin-polarized H and D observed via magnetization quantum beats
Dimitris Sofikitis, Chrysovalantis S. Kannis, Gregoris K. Boulogiannis +1
We measure nuclear and electron spin-polarized H and D densities of at least 10 with 10 ns lifetimes, from the photodissociation of HBr and DI with circularl…