Výsledky vyhledávání - "C. S. Kannis"

Macroscopic production of spin-polarized hydrogen atoms from the IR-excitation and photodissociation of molecular beams

Autor: T. P. Rakitzis, J. Suarez, C. S. Kannis

Publikováno v: Molecular physics 120(1-2), e1975053 (2022). doi:10.1080/00268976.2021.1975053

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 ${\rm NH_{3}}$ isotopes, including optical excitation schemes with partial hyperfine resolution. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d003297fcdb54b41d02b2c416df4746
http://arxiv.org/abs/2108.06133

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Ultrahigh-density spin-polarized hydrogen isotopes from the photodissociation of hydrogen halides: new applications for laser-ion acceleration, magnetometry, and polarized nuclear fusion

Autor: G. E. Katsoprinakis, T. Peter Rakitzis, C. S. Kannis, Konstantinos Tazes, Michail E. Koutrakis, G. K. Boulogiannis, Michalis Xygkis, Alexandros K. Spiliotis, Dimitrios Sofikitis

Publikováno v: Light, Science & Applications
Light 10(1), 35 (2021). doi:10.1038/s41377-021-00476-y
Light: Science & Applications, Vol 10, Iss 1, Pp 1-11 (2021)

Recently, our group produced spin-polarized hydrogen (SPH) atoms at densities of at least 1019 cm−3 from the photodissociation of hydrogen halide molecules with circularly polarized UV light and measured them via magnetization-quantum beats with a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d79b95ae080e73dd361694141e2e48e7
http://europepmc.org/articles/PMC7881141

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Macroscopic production of highly nuclear-spin-polarized molecules from IR-excitation and photodissociation of molecular beams

Autor: C. S. Kannis, T.P. Rakitzis

Publikováno v: Chemical physics letters 784, 139092 (2021). doi:10.1016/j.cplett.2021.139092

Pure, highly nuclear-spin-polarized molecules have only been produced with molecular beam-separation methods, with production rates up to ∼ 3 × 10 12 s−1. Here, we propose the production of spin-polarized molecular photofragments from the IR-exc

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http://arxiv.org/abs/2010.10367

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Production of HD Molecules in Definite Hyperfine Substates

Autor: H. Ströher, V. Trofimov, L. Huxold, L. Kochenda, M. Vznuzdaev, K. Grigoryev, V. Verhoeven, Markus Büscher, Ralf Engels, P. Kravtsov, A. A. Vasilyev, Y. Michael, C. S. Kannis

Publikováno v: Physical review letters 124(11), 113003 (2020). doi:10.1103/PhysRevLett.124.113003

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 was used to polarize both isotopes independently at the same time. By re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6866caac2487dca1e262956ad92d73d
https://hdl.handle.net/2128/24583

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Photofragment spin-polarization measurements via magnetization quantum beats: dynamics of DI photodissociation

Autor: T. Peter Rakitzis, C. S. Kannis, G. E. Katsoprinakis, Dimitris Sofikitis, G. K. Boulogiannis

Publikováno v: Physical chemistry chemical physics : PCCP. 21(26)

We report the electron-spin polarization of D atoms from the photodissociation of DI, at 213 nm and 266 nm, by measuring the magnetization quantum beats of the D atoms with a pick-up coil. We determine that the polarization P is large at both wavelen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3e8f550a08042a58e6a93fd7fcf4530
https://pubmed.ncbi.nlm.nih.gov/30604785

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Nuclear-spin-polarization dynamics ofH2,D2, and HD molecules in magnetic fields

Autor: C. S. Kannis, G. E. Katsoprinakis, Dimitris Sofikitis, T. P. Rakitzis

Publikováno v: Physical Review A. 98

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::405e87346d86ae0c089da8f38083a80e
https://doi.org/10.1103/physreva.98.043426

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Ultrahigh-Density Spin-Polarized H and D Observed via Magnetization Quantum Beats

Autor: Dimitris Sofikitis, G. K. Boulogiannis, T. Peter Rakitzis, C. S. Kannis

Publikováno v: Physical Review Letters. 121

We measure nuclear and electron spin-polarized H and D densities of at least ${10}^{19}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}3}$ with $\ensuremath{\sim}10\text{ }\text{ }\mathrm{ns}$ lifetimes, from the photodissociation of HBr and DI with cir

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb3d2a7c58de4277dfc927a737e98a1c
https://doi.org/10.1103/physrevlett.121.083001

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Advantages of nuclear fusion with polarized fuel

Publikováno v: Proceedings of Science / International School for Advanced Studies PSTP2017, 10 (2018). doi:10.22323/1.324.0031
XVII International Workshop on Polarized Sources, Targets & Polarimetry, Kaist, South Korea
Scopus-Elsevier
Italy, Proceedings of Science 324, 031 pp. (2018).
The XVII International Workshop on Polarized Sources, Targets and Polarimetry, PSTP2017, Daejeon, South Korea, 2017-10-16-2017-10-20
Sissa Medialab Trieste, Italy 10 pp. (2019). doi:10.22323/1.346.0176
Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018)-Sissa Medialab Trieste, Italy, 2019.-ISBN-doi:10.22323/1.346.0176
Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018)-Sissa Medialab Trieste, Italy, 2019.-ISBN-doi:10.22323/1.346.017623rd International Spin Physics Symposium, Ferrara, Italy, 2019-09-10-2019-09-14

The use of nuclear polarized fuel, {\it{i.e.}}~polarized D, T or $^3$He, for coming fusion reactors promises to increase their energy output and to optimize the complete fusion process in various ways. But before these advantages can be utilized, sev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00c17d8d0645ed6e8d924ac9f155ad3
https://hdl.handle.net/2128/20144

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