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1	Nuclear g-Factors in Iron 55 from Perturbed Angular Correlation Studies Kerr, Peter George 08 1900 (has links) <p> The (α,n) reaction on natural chromium has been used to study levels in 55Fe up to 2.5 MeV excitation. Intensities and angular distributions of the decay gamma rays were measured, yielding branching and E2/M1 mixing ratios. In a magnetized target of the alloy Cr20Fe80, the rotation of the angular distributions was observed. Using recently determined lifetimes and the average internal field of 277 kOe measured in the target material by Mössbauer absorption, the following g-factors are obtained: - 931 keV, 5/2- -: +1.2 ±0.5 1316 keV, 7/2- -: +0.5 ± 0.5 1408 keV, 7/2- -: -0.77 ± 0.16 </p> / Thesis / Master of Science (MSc)
2	A Precision Angular Correlation Table and Calculation of Geometrical Correction Factors Rowton, Larry James 01 1900 (has links) In recent years y-y angular correlations have been very useful in confirming the spins of excited nuclear states. Angular correlation techniques have also been employed to study the electric and magnetic character of excited nuclear states. With these things in mind, it was decided to design, construct, and test a precision angular correlation table. precision angular correlation table geometrical correction factors
3	Aplicação da espectroscopia de correlação angular perturbada na investigação de interações hiperfinas em compostos de háfnio, indio e cádmio com os ligantes Fsup(1-), OHsup(1-) e EDTA / Application of the perturbed angular correlation in the investigation of hyperfine interactions in compounds of hafnium, indium and cadmium with Fsup(1-), OHsup(1-) and EDTA ligands AMARAL, ANTONIO A. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:33:45Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:00Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP PERTURBED ANGULAR CORRELATION HYPERFINE INTERACTIONS ANGULAR CORRELATION HAFNIUM COMPOUNDS INDIUM COMPOUNDS CADMIUM COMPOUNDS LIGANDS EDTA SPECTROSCOPY
4	Aplicação da espectroscopia de correlação angular perturbada na investigação de interações hiperfinas em compostos de háfnio, indio e cádmio com os ligantes Fsup(1-), OHsup(1-) e EDTA / Application of the perturbed angular correlation in the investigation of hyperfine interactions in compounds of hafnium, indium and cadmium with Fsup(1-), OHsup(1-) and EDTA ligands AMARAL, ANTONIO A. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:33:45Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:00Z (GMT). No. of bitstreams: 0 / O presente trabalho realiza a investigação dos parâmetros hiperfinos, incluindo a sua natureza dinâmica, em compostos ligantes em solução a temperatura ambiente (295 K) e resfriada (77K) através da espectroscopia de Correlação Angular γγ Perturbada (CAP). Para a realização das medidas experimentais, utilizou-se núcleos de prova radioativos de 111In111Cd, 181Hf181Ta e 111mCd111Cd, que decaem através de cascata gama. As amostras foram preparadas diluindo-se soluções com os núcleos radioativos em água, quando se investigou a interação do núcleo de prova com o ligante água; adicionando-se soluções com os núcleos radioativos em solução tampão, quando se investigou a interação do núcleo de prova com os íons ligantes provenientes do próprio tampão (CO32- e HCO31-) e com o OH1-; e adicionando-se soluções com os núcleos radioativos em soluções do ligante ácido etilenodiaminotetracético (EDTA), este em pH entre 4,0 e 5,0, (que corresponde ao pH da própria solução saturada do EDTA) e em solução tampão de pH entre 9 e 10. Assim foi possível investigar os efeitos gerados por cada um desses métodos de preparação de amostras nas medidas CAP. Finalmente foi feita uma análise comparativa para os vários métodos de inserção dos núcleos de prova na amostra, considerando-se aspectos químicos e nucleares. A inexistência de medidas para esse tipo de amostra, justifica a importância dos resultados obtidos. / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP perturbed angular correlation hyperfine interactions angular correlation hafnium compounds indium compounds cadmium compounds ligands edta spectroscopy
5	Medidas de correlacao angular direcional gama-gama para transicoes no Ge-72 LANDULFO, EDUARDO 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:36:54Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:11Z (GMT). No. of bitstreams: 1 04374.pdf: 956595 bytes, checksum: 218893100890417f9826eb6f69e9954f (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP germanium 72 angular correlation gamma sources radiation detectors
6	Estudo do campo hiperfino magnetico no sitio do Ta-181 nas ligas de Heusler Cosub2ScSn, Cosub2ScGa e Cosub2HfSn ATTILI, ROBERTA N. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:37:01Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:28Z (GMT). No. of bitstreams: 1 04496.pdf: 1953193 bytes, checksum: 83f66485f1705e2b64ca387b0893c2cb (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP heusler alloys tantalum 181 magnetic fields angular correlation
7	Estudo espectroscopico nuclear do In-117 e Se-77 pela tecnica da correlacao angular ZAMBONI, CIBELE B. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:29:19Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:06Z (GMT). No. of bitstreams: 1 01302.pdf: 1587890 bytes, checksum: 6492feff3d3c148c31d89f429992c438 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP angular distribution angular correlation e. isotopes indium 117 selenium 77 spectroscopy
8	Aplicacao da correlacao angular perturbada ao estudo da perovskita de CdTiO-3 impurificada com Hf SOUZA, SYLVIO D. de 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:30:14Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:14Z (GMT). No. of bitstreams: 1 00418.pdf: 926606 bytes, checksum: a75368bd1ec19098eb6adbb843ab0886 (MD5) / Dissertacao (Mestrado) / IEA/D / Instituto de Energia Atomica - IEA angular distribution angular correlation minerals perovskite transition metals tantalum 181
9	Medidas de correlacao angular direcional gama-gama para transicoes no Ge-72 LANDULFO, EDUARDO 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:36:54Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:11Z (GMT). No. of bitstreams: 1 04374.pdf: 956595 bytes, checksum: 218893100890417f9826eb6f69e9954f (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP germanium 72 angular correlation gamma sources radiation detectors
10	Estudo do campo hiperfino magnetico no sitio do Ta-181 nas ligas de Heusler Cosub2ScSn, Cosub2ScGa e Cosub2HfSn ATTILI, ROBERTA N. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:37:01Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:28Z (GMT). No. of bitstreams: 1 04496.pdf: 1953193 bytes, checksum: 83f66485f1705e2b64ca387b0893c2cb (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP heusler alloys tantalum 181 magnetic fields angular correlation

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