dc.date.accessioned | 2022-03-12T18:15:56Z | |
dc.date.available | 2022-03-12T18:15:56Z | |
dc.date.created | 2021-09-26T19:53:49Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Mariazzi, Sebastiano Caravita, Ruggero Zimmermann, Christian Rienaecker, Benjamin Camper, Antoine Yves Marie Charles Belov, Alexander Stepanovich Bonomi, Germano Brusa, Roberto Sennen Castelli, Francesco Consolati, Giovanni Doser, Michael Gjersdal, Håvard Lisa Theresa, Glöggler Guatieri, Francesco Haider, Stefan Matveev, Viktor Nebbia, Giancarlo Nedelec, Patrick Pagano, Davide Penasa, Luca Petracek, Vojtech Prelz, Francesco Povolo, Luca Røhne, Ole Myren Rotondi, Alberto Sandaker, Heidi Zurlo, Nicola . High-yield thermalized positronium at room temperature emitted by morphologically tuned nanochanneled silicon targets. Journal of Physics B: Atomic, Molecular and Optical Physics. 2021 | |
dc.identifier.uri | http://hdl.handle.net/10852/92391 | |
dc.description.abstract | Abstract
Nanochanneled silicon targets with high positron/positronium (Ps) conversion rate and efficient Ps cooling were produced. Morphological parameters of the nanochannels, such as their diameter and length, were adjusted to get a large fraction of thermalized Ps at room temperature being emitted into vacuum. Ps cooling measurements were conducted combining single-shot positron annihilation lifetime spectroscopy and Doppler spectroscopy of the 1 3 S → 2 3 P transition. 2 γ –3 γ annihilation ratio measurements were also performed to estimate the positron/Ps conversion efficiency. In a converter with nanochannel diameter of 7–10 nm and depth of 3.89 μ m, ∼28% of implanted positrons with an energy of 3.3 keV was found to be emitted as Ps with a transverse kinetic energy of 11 ± 2 meV. The reduction of the nanochannels depth to 1.13 μ m, without changing the nanochannel diameter, was found to result in a less efficient cooling, highlighting the presence of Ps reflection from the bottom end of nanochannels. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | High-yield thermalized positronium at room temperature emitted by morphologically tuned nanochanneled silicon targets | |
dc.type | Journal article | |
dc.creator.author | Mariazzi, Sebastiano | |
dc.creator.author | Caravita, Ruggero | |
dc.creator.author | Zimmermann, Christian | |
dc.creator.author | Rienaecker, Benjamin | |
dc.creator.author | Camper, Antoine Yves Marie Charles | |
dc.creator.author | Belov, Alexander Stepanovich | |
dc.creator.author | Bonomi, Germano | |
dc.creator.author | Brusa, Roberto Sennen | |
dc.creator.author | Castelli, Francesco | |
dc.creator.author | Consolati, Giovanni | |
dc.creator.author | Doser, Michael | |
dc.creator.author | Gjersdal, Håvard | |
dc.creator.author | Lisa Theresa, Glöggler | |
dc.creator.author | Guatieri, Francesco | |
dc.creator.author | Haider, Stefan | |
dc.creator.author | Matveev, Viktor | |
dc.creator.author | Nebbia, Giancarlo | |
dc.creator.author | Nedelec, Patrick | |
dc.creator.author | Pagano, Davide | |
dc.creator.author | Penasa, Luca | |
dc.creator.author | Petracek, Vojtech | |
dc.creator.author | Prelz, Francesco | |
dc.creator.author | Povolo, Luca | |
dc.creator.author | Røhne, Ole Myren | |
dc.creator.author | Rotondi, Alberto | |
dc.creator.author | Sandaker, Heidi | |
dc.creator.author | Zurlo, Nicola | |
cristin.unitcode | 185,15,4,0 | |
cristin.unitname | Fysisk institutt | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1938693 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Physics B: Atomic, Molecular and Optical Physics&rft.volume=&rft.spage=&rft.date=2021 | |
dc.identifier.jtitle | Journal of Physics B: Atomic, Molecular and Optical Physics | |
dc.identifier.volume | 54 | |
dc.identifier.issue | 8 | |
dc.identifier.doi | https://doi.org/10.1088/1361-6455/abf6b6 | |
dc.identifier.urn | URN:NBN:no-94982 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0953-4075 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/92391/1/Mariazzi_2021_J._Phys._B__At._Mol._Opt._Phys._54_085004.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 085004 | |
dc.relation.project | NFR/303337 | |