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Laser excitation of the n=3 level of positronium for antihydrogen production
We demonstrate laser excitation of the n=3 state of positronium (Ps) in vacuum. A specially designed high-efficiency pulsed slow positron beam and single shot positronium annihilation lifetime spectroscopy were used to produce and detect Ps. Pulsed laser excitation of n=3 level at 205 nm was monitor...
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| Lenguaje: | eng |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevA.94.012507 http://cds.cern.ch/record/2053763 |
| _version_ | 1780948219350482944 |
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| author | Aghion, S Amsler, C Ariga, A Ariga, T Bonomi, G Braunig, P Bremer, J Brusa, R S Cabaret, L Caccia, M Caravita, R Castelli, F Cerchiari, G Chlouba, K Cialdi, S Comparat, D Consolati, G Demetrio, A Di Noto, L Doser, M Dudarev, A Ereditato, A Evans, C Ferragut, R Fesel, J Fontana, A Forslund, O K Gerber, S Giammarchi, M Gligorova, A Gninenko, S N Guatieri, F Haider, S Holmestad, H Huse, T Jernelv, I L Jordan, E Kellerbauer, A Kimura, M Koetting, T Krasnicky, D Lagomarsino, V Lansonneur, P Lebrun, P Lehner, S Liberadzka, J Malbrunot, C Mariazzi, S Marx, L Matveev, V A Mazzotta, Z Nebbia, G Nedelec, P Oberthaler, M K Pacifico, N Pagano, D Penasa, L Petracek, V Pistillo, C Prelz, F Prevedelli, M Ravelli, L Resch, L Rienacker, B Røhne, O M Rotondi, A Sacerdoti, M Sandaker, H Santoro, R Scampoli, P Smestad, L Sorrentino, F Spacek, M Storey, J Strojek, I M Testera, G Tietje, I Vamosi, S Widmann, E Yzombard, P Zmeskal, J Zurlo, N. |
| author_facet | Aghion, S Amsler, C Ariga, A Ariga, T Bonomi, G Braunig, P Bremer, J Brusa, R S Cabaret, L Caccia, M Caravita, R Castelli, F Cerchiari, G Chlouba, K Cialdi, S Comparat, D Consolati, G Demetrio, A Di Noto, L Doser, M Dudarev, A Ereditato, A Evans, C Ferragut, R Fesel, J Fontana, A Forslund, O K Gerber, S Giammarchi, M Gligorova, A Gninenko, S N Guatieri, F Haider, S Holmestad, H Huse, T Jernelv, I L Jordan, E Kellerbauer, A Kimura, M Koetting, T Krasnicky, D Lagomarsino, V Lansonneur, P Lebrun, P Lehner, S Liberadzka, J Malbrunot, C Mariazzi, S Marx, L Matveev, V A Mazzotta, Z Nebbia, G Nedelec, P Oberthaler, M K Pacifico, N Pagano, D Penasa, L Petracek, V Pistillo, C Prelz, F Prevedelli, M Ravelli, L Resch, L Rienacker, B Røhne, O M Rotondi, A Sacerdoti, M Sandaker, H Santoro, R Scampoli, P Smestad, L Sorrentino, F Spacek, M Storey, J Strojek, I M Testera, G Tietje, I Vamosi, S Widmann, E Yzombard, P Zmeskal, J Zurlo, N. |
| author_sort | Aghion, S |
| collection | CERN |
| description | We demonstrate laser excitation of the n=3 state of positronium (Ps) in vacuum. A specially designed high-efficiency pulsed slow positron beam and single shot positronium annihilation lifetime spectroscopy were used to produce and detect Ps. Pulsed laser excitation of n=3 level at 205 nm was monitored via Ps photoionization induced by a second intense laser pulse at 1064 nm. About 15% of the overall positronium emitted in vacuum was excited to n=3 and photoionized. Saturation of both the n=3 excitation and the following photoionization was observed and is explained by a simple rate equation model. Scanning the laser frequency allowed us to extract the positronium transverse temperature related to the width of the Doppler-broadened line. Moreover, preliminary observation of excitation to Rydberg states (n = 15...17) using n=3 as intermediate level was observed, giving an independent confirmation of efficient excitation to the 33P state. |
| id | cern-2053763 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2015 |
| record_format | invenio |
| spelling | cern-20537632022-08-10T12:48:29Zdoi:10.1103/PhysRevA.94.012507http://cds.cern.ch/record/2053763engAghion, SAmsler, CAriga, AAriga, TBonomi, GBraunig, PBremer, JBrusa, R SCabaret, LCaccia, MCaravita, RCastelli, FCerchiari, GChlouba, KCialdi, SComparat, DConsolati, GDemetrio, ADi Noto, LDoser, MDudarev, AEreditato, AEvans, CFerragut, RFesel, JFontana, AForslund, O KGerber, SGiammarchi, MGligorova, AGninenko, S NGuatieri, FHaider, SHolmestad, HHuse, TJernelv, I LJordan, EKellerbauer, AKimura, MKoetting, TKrasnicky, DLagomarsino, VLansonneur, PLebrun, PLehner, SLiberadzka, JMalbrunot, CMariazzi, SMarx, LMatveev, V AMazzotta, ZNebbia, GNedelec, POberthaler, M KPacifico, NPagano, DPenasa, LPetracek, VPistillo, CPrelz, FPrevedelli, MRavelli, LResch, LRienacker, BRøhne, O MRotondi, ASacerdoti, MSandaker, HSantoro, RScampoli, PSmestad, LSorrentino, FSpacek, MStorey, JStrojek, I MTestera, GTietje, IVamosi, SWidmann, EYzombard, PZmeskal, JZurlo, N.Laser excitation of the n=3 level of positronium for antihydrogen productionParticle Physics - ExperimentWe demonstrate laser excitation of the n=3 state of positronium (Ps) in vacuum. A specially designed high-efficiency pulsed slow positron beam and single shot positronium annihilation lifetime spectroscopy were used to produce and detect Ps. Pulsed laser excitation of n=3 level at 205 nm was monitored via Ps photoionization induced by a second intense laser pulse at 1064 nm. About 15% of the overall positronium emitted in vacuum was excited to n=3 and photoionized. Saturation of both the n=3 excitation and the following photoionization was observed and is explained by a simple rate equation model. Scanning the laser frequency allowed us to extract the positronium transverse temperature related to the width of the Doppler-broadened line. Moreover, preliminary observation of excitation to Rydberg states (n = 15...17) using n=3 as intermediate level was observed, giving an independent confirmation of efficient excitation to the 33P state.We demonstrate the laser excitation of the n=3 state of positronium (Ps) in vacuum. A combination of a specially designed pulsed slow positron beam and a high-efficiency converter target was used to produce Ps. Its annihilation was recorded by single-shot positronium annihilation lifetime spectroscopy. Pulsed laser excitation of the n=3 level at a wavelength λ≈205 nm was monitored via Ps photoionization induced by a second intense laser pulse at λ=1064 nm. About 15% of the overall positronium emitted into vacuum was excited to n=3 and photoionized. Saturation of both the n=3 excitation and the following photoionization was observed and explained by a simple rate equation model. The positronium's transverse temperature was extracted by measuring the width of the Doppler-broadened absorption line. Moreover, excitation to Rydberg states n=15 and 16 using n=3 as the intermediate level was observed, giving an independent confirmation of excitation to the $3^{3}P$ state.CERN-PH-EP-2015-265oai:cds.cern.ch:20537632015-09-17 |
| spellingShingle | Particle Physics - Experiment Aghion, S Amsler, C Ariga, A Ariga, T Bonomi, G Braunig, P Bremer, J Brusa, R S Cabaret, L Caccia, M Caravita, R Castelli, F Cerchiari, G Chlouba, K Cialdi, S Comparat, D Consolati, G Demetrio, A Di Noto, L Doser, M Dudarev, A Ereditato, A Evans, C Ferragut, R Fesel, J Fontana, A Forslund, O K Gerber, S Giammarchi, M Gligorova, A Gninenko, S N Guatieri, F Haider, S Holmestad, H Huse, T Jernelv, I L Jordan, E Kellerbauer, A Kimura, M Koetting, T Krasnicky, D Lagomarsino, V Lansonneur, P Lebrun, P Lehner, S Liberadzka, J Malbrunot, C Mariazzi, S Marx, L Matveev, V A Mazzotta, Z Nebbia, G Nedelec, P Oberthaler, M K Pacifico, N Pagano, D Penasa, L Petracek, V Pistillo, C Prelz, F Prevedelli, M Ravelli, L Resch, L Rienacker, B Røhne, O M Rotondi, A Sacerdoti, M Sandaker, H Santoro, R Scampoli, P Smestad, L Sorrentino, F Spacek, M Storey, J Strojek, I M Testera, G Tietje, I Vamosi, S Widmann, E Yzombard, P Zmeskal, J Zurlo, N. Laser excitation of the n=3 level of positronium for antihydrogen production |
| title | Laser excitation of the n=3 level of positronium for antihydrogen production |
| title_full | Laser excitation of the n=3 level of positronium for antihydrogen production |
| title_fullStr | Laser excitation of the n=3 level of positronium for antihydrogen production |
| title_full_unstemmed | Laser excitation of the n=3 level of positronium for antihydrogen production |
| title_short | Laser excitation of the n=3 level of positronium for antihydrogen production |
| title_sort | laser excitation of the n=3 level of positronium for antihydrogen production |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1103/PhysRevA.94.012507 http://cds.cern.ch/record/2053763 |
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