| dc.contributor.author | Toufen D.L. | |
| dc.contributor.author | Allegro P.R.P. | |
| dc.contributor.author | Medina N.H. | |
| dc.contributor.author | Oliveira J.R.B. | |
| dc.contributor.author | Cybulska E.W. | |
| dc.contributor.author | Seale W.A. | |
| dc.contributor.author | Linares R. | |
| dc.contributor.author | Silveira M.A.G. | |
| dc.contributor.author | Ribas R.V. | |
| dc.date.accessioned | 2019-08-19T23:47:19Z | |
| dc.date.available | 2019-08-19T23:47:19Z | |
| dc.date.issued | 2014 | |
| dc.identifier.citation | Toufen, D.L.; ALLEGRO, P.R.P.; Medina, N.H.; Oliveira, J.R.B.; Ribas, R V; Cybulska, E W; Seale, W A; LINARES, R.; SILVEIRA, M. A. G.. A system to measure isomeric states half-lives in the 10 ns to 10 μs range. Review of Scientific Instruments, v. 85, n. 7, p. 073501, 2014. | |
| dc.identifier.issn | 1089-7623 | |
| dc.identifier.uri | https://repositorio.fei.edu.br/handle/FEI/1456 | |
| dc.description.abstract | The Isomeric State Measurement System (SISMEI) was developed to search for isomeric nuclear states produced by fusion-evaporation reactions. The SISMEI consists of 10 plastic phoswich telescopes, two lead shields, one NaI(Tl) scintillation detector, two Compton suppressed HPGe γ-ray detectors, and a cone with a recoil product catcher. The new system was tested at the 8 UD Pelletron tandem accelerator of the University of São Paulo with the measurement of two known isomeric states: 54Fe, 10+ state (E = 6527.1 (11) keV, T1/2 = 364(7) ns) and the 5/2+ state of 19F (E = 197.143 (4) keV, T1/2 = 89.3 (10) ns). The results indicate that the system is capable of identifying delayed transitions, of measuring isomeric state lifetimes, and of identifying the feeding transitions of the isomeric state through the delayed γ-γ coincidence method. The measured half-life for the 10+ state was T1/2 = 365(14) ns and for the 5/2+ state, 100(36) ns. © 2014 AIP Publishing LLC. | |
| dc.relation.ispartof | Review of Scientific Instruments | |
| dc.rights | Acesso Restrito | |
| dc.title | A system to measure isomeric state half-lives in the 10 ns to 10 μs range | |
| dc.type | Artigo | |
