Study of the Electron-Positron Annihilation Coincidence Peak Two-Dimensional Profile
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876435493720162304 |
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| author | E. do Nascimento |
| author_facet | E. do Nascimento |
| contents | Study of the Electron-Positron Annihilation Coincidence Peak Two-Dimensional Profile E. do Nascimento O. Helene C. Takiya V. R. Vanin Física, Astronomía y Matemáticas Positron annihilation radiation profile in aluminum was observed with a pair of Ge detectors in coincidence.22Na was used as a source of positron and the two-dimensional gamma energy spectrum was fitted using a modelfunction. Annihilation components of positron at rest with conduction band, 1s, 2s, and 2p electrons wereobserved. The in-flight positron annihilation was also observed. The model function also took into accountthe detector response function, relative efficiency corrections and the gamma backscattering. Coincidencesinvolving a combination of Compton effect, pileup, ballistic deficit, and pulse shaping problems were treatedas well. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434584 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| format | Artículo científico |
| id | redalyc_46434584 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Study of the Electron-Positron Annihilation Coincidence Peak Two-Dimensional Profile E. do Nascimento Física, Astronomía y Matemáticas Study of the Electron-Positron Annihilation Coincidence Peak Two-Dimensional Profile E. do Nascimento O. Helene C. Takiya V. R. Vanin Física, Astronomía y Matemáticas Positron annihilation radiation profile in aluminum was observed with a pair of Ge detectors in coincidence.22Na was used as a source of positron and the two-dimensional gamma energy spectrum was fitted using a modelfunction. Annihilation components of positron at rest with conduction band, 1s, 2s, and 2p electrons wereobserved. The in-flight positron annihilation was also observed. The model function also took into accountthe detector response function, relative efficiency corrections and the gamma backscattering. Coincidencesinvolving a combination of Compton effect, pileup, ballistic deficit, and pulse shaping problems were treatedas well. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434584 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| title | Study of the Electron-Positron Annihilation Coincidence Peak Two-Dimensional Profile |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434584 |