V. Timoshenko, M. Lisachenko, B. Kamenev, O. Shalygina, P. Kashkarov, J. Heitmann, Michael Schmidt, M. Zachrias
Comparative studies of photoluminescence (PL) of undoped and Er-doped size-controlled nanocrystalline Si/SiO2 superlattice structures show that the optical excitation of Si nanocrystals can be completely transferred to the Er3+ ions in surrounding SiO2, resulting in a strong PL line at 1.5 μm. The PL yield of the Er-doped structure increases for higher photon energy of excitation and for smaller nanocrystal sizes. This highly efficient sensitizing of the Er-related PL is explained by a strong coupling between excitons confined in Si nanocrystals and neighboring Er3+ ions in their upper excited states.
{"title":"HIGHLY EFFICIENT SENSITIZING OF ERBIUM ION LUMINESCENCE IN SIZE-CONTROLLED NANOCRYSTALLINE SI/SIO2 SUPERLATTICE STRUCTURES","authors":"V. Timoshenko, M. Lisachenko, B. Kamenev, O. Shalygina, P. Kashkarov, J. Heitmann, Michael Schmidt, M. Zachrias","doi":"10.1063/1.1690465","DOIUrl":"https://doi.org/10.1063/1.1690465","url":null,"abstract":"Comparative studies of photoluminescence (PL) of undoped and Er-doped size-controlled nanocrystalline Si/SiO2 superlattice structures show that the optical excitation of Si nanocrystals can be completely transferred to the Er3+ ions in surrounding SiO2, resulting in a strong PL line at 1.5 μm. The PL yield of the Er-doped structure increases for higher photon energy of excitation and for smaller nanocrystal sizes. This highly efficient sensitizing of the Er-related PL is explained by a strong coupling between excitons confined in Si nanocrystals and neighboring Er3+ ions in their upper excited states.","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"46 1","pages":"2512"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84955206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1987-06-01DOI: 10.1016/0375-9601(87)90789-4
C. Whelan, B. Piraux
{"title":"The convergence in L of the Partial wave expansion for electron-atom collisions","authors":"C. Whelan, B. Piraux","doi":"10.1016/0375-9601(87)90789-4","DOIUrl":"https://doi.org/10.1016/0375-9601(87)90789-4","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"125 1","pages":"126-128"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78471583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-01-16DOI: 10.1016/0370-2693(86)90797-5
T. Oka, J. Vergados, 岡村 隆光, オカ タカミツ
{"title":"TWO-MESON ANNIHILATION OF A NUCLEON AND ANTINUCLEON","authors":"T. Oka, J. Vergados, 岡村 隆光, オカ タカミツ","doi":"10.1016/0370-2693(86)90797-5","DOIUrl":"https://doi.org/10.1016/0370-2693(86)90797-5","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86139093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1983-10-13DOI: 10.1016/0370-2693(83)91057-2
D. O’Connor, B. Hu, T. Shen
{"title":"Symmetry behavior in the Einstein universe: effect of spacetime curvature and arbitrary field coupling","authors":"D. O’Connor, B. Hu, T. Shen","doi":"10.1016/0370-2693(83)91057-2","DOIUrl":"https://doi.org/10.1016/0370-2693(83)91057-2","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"68 1","pages":"31"},"PeriodicalIF":0.0,"publicationDate":"1983-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80832930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-08-27DOI: 10.1016/0370-2693(81)90599-2
G. Fowler
{"title":"COHERENCE AND SELF-INDUCED TRANSPARENCY IN HIGH ENERGY HADRONIC COLLISIONS","authors":"G. Fowler","doi":"10.1016/0370-2693(81)90599-2","DOIUrl":"https://doi.org/10.1016/0370-2693(81)90599-2","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1981-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85178129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
TWO-WEEK LOAN COPY This is a Library Copy which may be borrowed for two weeks. For a copy, Tech. Info. Division, Ext. 6782.
两周外借本这是图书馆的外借本，可外借两周。要一份拷贝，技术信息。分部，分机6782。
{"title":"PION CONDENSATION IN A FIELD THEORY CONSISTENT WITH BULK PROPERTIES OF NUCLEAR MATTER","authors":"B. Banerjee","doi":"10.2172/5362987","DOIUrl":"https://doi.org/10.2172/5362987","url":null,"abstract":"TWO-WEEK LOAN COPY This is a Library Copy which may be borrowed for two weeks. For a copy, Tech. Info. Division, Ext. 6782.","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"24 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1980-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85836037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1967-05-15DOI: 10.1016/0370-2693(67)90411-X
G. Vallois, J. Saudinos, O. Beer, M. Gendrot, P. Lopato
{"title":"SPECTROSCOPY OF ²°⁷Pb BY INELASTIC SCATTERING OF 24.5-Mev PROTONS","authors":"G. Vallois, J. Saudinos, O. Beer, M. Gendrot, P. Lopato","doi":"10.1016/0370-2693(67)90411-X","DOIUrl":"https://doi.org/10.1016/0370-2693(67)90411-X","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"10 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1967-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81785337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91107-3
H.G. Hilpert, G. Reimann, E. Schüttler, H. Böttcher, K. Lanius, A. Meyer, A. Pose, K. Böckmann, W. Johnssen, J. Moebes, W. Tejessy, G. Harigel, G. Horlitz, E. Lohrmann, H. Meyer, G. Wolf, W.P. Swanson , M.W. Teucher, D. Lüke, D. Mönkemeyer, J. Seyerlein
Experimental results on the total and differential cross sections and on the decay angular distribution for the reaction at energies between 0.3 GeV and 5.8 GeV are presented and compared with theoretical predictions.
{"title":"The reaction γ p → N∗++π- at energies up to 5.8 GeV","authors":"H.G. Hilpert, G. Reimann, E. Schüttler, H. Böttcher, K. Lanius, A. Meyer, A. Pose, K. Böckmann, W. Johnssen, J. Moebes, W. Tejessy, G. Harigel, G. Horlitz, E. Lohrmann, H. Meyer, G. Wolf, W.P. Swanson , M.W. Teucher, D. Lüke, D. Mönkemeyer, J. Seyerlein","doi":"10.1016/0031-9163(66)91107-3","DOIUrl":"10.1016/0031-9163(66)91107-3","url":null,"abstract":"<div><p>Experimental results on the total and differential cross sections and on the decay angular distribution for the reaction <span><math><mtext>γp → N</mtext><msup><mi></mi><mn>∗++</mn></msup><mtext>π</mtext><msup><mi></mi><mn>-</mn></msup></math></span> at energies between 0.3 GeV and 5.8 GeV are presented and compared with theoretical predictions.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 707-710"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91107-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76996834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91109-7
Gy. Bencze
It is shown that nonlocality in the alpha-nucleus potential increases the barrier penetrability. The range of nonlocality of the alpha-nucleus potential is estimated by comparing experimental and theoretical alpha decay rates.
{"title":"Nonlocal potential barrier and the perey-effect in alpha decay","authors":"Gy. Bencze","doi":"10.1016/0031-9163(66)91109-7","DOIUrl":"10.1016/0031-9163(66)91109-7","url":null,"abstract":"<div><p>It is shown that nonlocality in the alpha-nucleus potential increases the barrier penetrability. The range of nonlocality of the alpha-nucleus potential is estimated by comparing experimental and theoretical alpha decay rates.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 713-715"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91109-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84865745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91105-X
A.P. Contogouris
A model is presented, in which the variation of the differential cross section at large momentum transfer is determined in terms of experimentally know quantities.
本文提出了一个模型，在该模型中，微分截面在大动量传递时的变化是用实验已知的量来确定的。
{"title":"A model for elastic scattering at high energy and large momentum transfer","authors":"A.P. Contogouris","doi":"10.1016/0031-9163(66)91105-X","DOIUrl":"10.1016/0031-9163(66)91105-X","url":null,"abstract":"<div><p>A model is presented, in which the variation of the differential cross section at large momentum transfer is determined in terms of experimentally know quantities.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 698-701"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91105-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88041307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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