INSTITUTO DE PESQUISAS ENERGÉTICAS E NUCLEARES Repositório Digital da Produção Técnico Científica Biblioteca Terezine Arantes Ferraz

 

Publicações do autor   JOSE MESTNIK FILHO    depositadas no Repositório Digital/IPEN - Total : 145 28/11/2024 05:38:55
Seq	Ano	Ipen_doc	Tipo	Circ.	Título
1	2019	27093	Resumo de eventos científicos	Internacional	Insights into anomalous magnetic hyperfine field at Ce impurity in LaMn2X2 (X=Si, Ge)
2	2019	27307	Resumo de eventos científicos	Internacional	Investigation of local magnetic properties of CeCd as a function of the unit cell volume by means of first principles calculations
3	2017	23077	Artigo de periódico	Internacional	Local structure of core−shell MnFe2O4+δ-based nanocrystals: cation distribution and valence states of manganese ions
4	2016	21733	Artigo de periódico	Internacional	A method to determine contributions to the hyperfine field at Ce probes in magnetic host: Application to Ce impurities at RE sites in REAg (RE=Gd, Tb, Dy, Ho) compounds
5	2016	22670	Artigo de periódico	Internacional	Magnetic hyperfine interactions on Cd sites of the rare-earth cadmium compounds RCd (R=Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, and Er)
6	2016	23309	Resumo de eventos científicos	Internacional	Temperature anomalies of the hyperfine magnetic fields on 111Cd probe nuclei in ferro- and antiferromagnetic phases of the ordered FeRh alloys
7	2016	23310	Resumo de eventos científicos	Internacional	Hydrogen absorption effects on the physical properties of ball-milled LaNiSn intermetallic compounds
8	2016	23311	Resumo de eventos científicos	Internacional	First-principles calculations of the magnetic hyperfine field at Cd sites in RECd (RE = rare-earth element)
9	2015	20880	Artigo de periódico	Internacional	Structural and mossbauer spectroscopy characterization of bulk and nanostructured TiFesub(0.5) Nisub(0.5)/graphite compounds and their hydrides
10	2015	21223	Artigo de periódico	Internacional	Charge distribution and hyperfine interactions in the vicinity of impurity sites in Insub(2)Osub(3) doped with Fe, Co and Ni
11	2015	21278	Artigo de periódico	Internacional	Magnetic and transport properties assisted by local distortions in Bisub(2)Mnsub(4)Osub(10) and Bisub(2)Fesub(4)Osub(9) multiferroic compounds
12	2015	21301	Artigo de periódico	Internacional	Oxygen stoichiometry of Basub(0.50)Srsub(0.50)Cosub(0.80)Fesub(0.20)Osub(3-'delta') obtained by EDTA-citrate method and measured by X-ray and neutron diffraction
13	2015	22170	Resumo de eventos científicos	Nacional	Magnetic and transport properties along with local distortions in Bisub(2)Mnsub(4)Osub(10) and Bisub(2)Fesub(4)Osub(9) multiferroic compounds
14	2014	20386	Resumo de eventos científicos	Internacional	Crystalline structure and oxigen stoichiometry of the Ba0.50Sr0.50Co0.80Fe0.20O3-d powders obtained by EDTA-Citrate method measured by X-ray and neutron diffraction
15	2014	20677	Resumo de eventos científicos	Internacional	First principles calculation of the Cd-doped ZrInsub(2): a study of electronic properties and electric field gradients
16	2013	18805	Artigo de periódico	Internacional	Hyperfine interactions in intermetallic rare earth-gallium compounds studied by sup(111)Cd PAC
17	2013	19525	Artigo de periódico	Internacional	Intrinsic features of the magnetoeletric coupling mechanism in displacive multiferroics
18	2013	19668	Artigo de periódico	Internacional	Study of hyperfine interactions in GdInsub(3)
19	2012	18188	Artigo de periódico	Internacional	Fabrication of powder from ductile U-Mo alloys for use as nuclear dispersion
20	2012	18304	Artigo de periódico	Internacional	Structural and magnetic modifications induced by hydrogen atoms occupying interstitial sites in GdNiInHsub(0.5) compound
21	2012	18323	Artigo de periódico	Internacional	The effect of hybridization on local magnetic interactions at highly diluted Ce ions in tetragonal intermetallic compounds RERhsub(2)Sisub(2)(RE = Ce, Pr, Nd, Gd, Tb, Dy)
22	2012	18822	Artigo de periódico	Internacional	Structural, chemical, and magnetic investigations of core-shel zinc ferrite nanoparticles
23	2011	17039	Texto completo de evento	Internacional	Powder fabrication of U-Mo alloys for nuclear dispersion fuels
24	2011	17064	Texto completo de evento	Internacional	Historical review of neutron spectrometry and diffraction in brazil - 50 years
25	2011	17186	Texto completo de evento	Internacional	Hydrostatic pressure cells development for x-ray and neutrons experiments
26	2011	17249	Artigo de periódico	Internacional	Impurities in magnetic materials studied by PAC spectroscopy
27	2011	17496	Texto completo de evento	Internacional	Neutron powder diffraction measurements of the spinel MgGasub(2)Osub(4):Crsup(3+) - A comparative study between the high flux diffqractometer D2B at the ILL and the high resolution powder diffractometer Aurora at IPEN
28	2011	17575	Texto completo de evento	Internacional	Fabrication of powder from ductile U-Mo alloys for use as nuclear dispersion
29	2011	17643	Resumo de eventos científicos	Nacional	Rietveld analysis of Besub(3)Alsub(2)(SiOsub(3))sub(6) employing high-resolution neutron powder diffraction patterns
30	2011	17703	Texto completo de evento	Internacional	Neutron diffraction patterns measured with a high-resolution powder diffractometers installed on a low-flux reactor
31	2011	17735	Artigo de periódico	Internacional	Electric field gradients at sup(111)In/sup(111)Cd probe atoms on A-sites in 211-MAX phases
32	2011	17801	Resumo de eventos científicos	Internacional	Nanostructured CaSrTiFeO polycrystalline materials: synthesis, structural and microstructural characterization
33	2011	17844	Artigo de periódico	Internacional	ZnFesub(2)Osub(4) nanoparticles for ferrofluids: A combined XANES and XRD study
34	2010	14473	Artigo de periódico	Internacional	Magnetic hyperfine field at Nd sites in NdAg studied by perturbed angular correlation spectroscopy and ab-initio calculations
35	2010	15653	Artigo de periódico	Internacional	Aurora - A high-resolution powder diffractometer installed on the IEA-R1 research reactor at IPEn-CNEN/SP
36	2010	15744	Texto completo de evento	Internacional	Powdering ductile U-Mo alloys for nuclear dispersion fuels
37	2010	16047	Resumo de eventos científicos	Nacional	X-ray and neutron diffraction analysis of Ca-Sr-Ti-Fe-O compounds
38	2010	16507	Artigo de periódico	Internacional	Characterization of nanostructured HfO2 films using perturbed angular correlation (PAC) technique
39	2010	16515	Artigo de periódico	Internacional	Perturbed angular correlation studies of the max phase tisub(2)AIN and Crsub(2)GeC using ion implanted sup(111)In as probe nuclei
40	2010	16634	Resumo de eventos científicos	Nacional	Thermodynamic and electrical properties of GdNiIn compound
41	2008	13774	Artigo de periódico	Internacional	Investigation of spin transition in GdCoOsub(3) by measuring the electric field gradient at Co sites
42	2008	13775	Artigo de periódico	Internacional	Magnetic field at sup(140)Ce in Dy sites in DyX (X=Cu, Ag) compounds studied by perturbed angular correlation spectroscopy
43	2008	13776	Artigo de periódico	Internacional	Spin transitions of Co ions in RCoOsub(3) (R=Gd,Tb) investigated by measuring the electric field gradient at R and Co sites
44	2008	16601	Resumo de eventos científicos	Internacional	Rietveld refinement of Nd and Pr doped BaYsub(2)Fsub(8) single crystals employing neutron powder diffraction patterns
45	2007	11752	Artigo de periódico	Internacional	The Ce electronic ground state in CeMnsub(2)Gesub(2) determined by sup(140)Ce PAC spectroscopy and electronic structure calculations
46	2007	11753	Artigo de periódico	Internacional	Investigation of the magnetic hyperfine field at Gd and In sites in GdTln(T=Ni, PD, Cu) compounds
47	2007	11957	Texto completo de evento	Internacional	Study of the magnetic hyperfine field acting on sup(140)Ce probes in NdAg by TDPAC spectroscopy and AB-initio eletronic structure calculations
48	2007	12471	Resumo de eventos científicos	Internacional	Characterization of the new IPEN-CNENSP PSD neutron diffractometer
49	2007	12835	Artigo de periódico	Internacional	Local investigation of magnetism at R and In sites in RNiln (R=Gd, Tb, Dy, Ho) compounds
50	2007	13714	Artigo de periódico	Internacional	Temperature dependence of the magnetic hyperfine field at cerium impurity in Co
51	2007	13715	Artigo de periódico	Internacional	Magnetic hyperfine fields at Gd and in sites in GdPdIn compound
52	2007	13717	Artigo de periódico	Internacional	Hyperfine interactions at R and In sites in RNiIn (R=Gd, Tb, Dy, Ho) compounds measured by perturbed angular correlation spectroscopy
53	2007	13718	Artigo de periódico	Internacional	Investigation of the different nature of magnetic hyperfine fields of Ce probes in Gd and matrices
54	2007	13720	Artigo de periódico	Internacional	Temperature dependence of electric field gradient in TbCoOsub(3)
55	2007	13722	Artigo de periódico	Internacional	Investigation of hyperfine interactions in RMOsub(3) (R=La, Nd; M=Cr, Fe) antiferromagnetic perovskite oxides using PAC spectroscopy
56	2007	16175	Texto completo de evento	Internacional	Investigation of spin transition in GdCoOsub(3) by measuring the electric field gradient at Co sites
57	2007	16267	Texto completo de evento	Internacional	Magnetic field at sup(140)Ce in Dy sites in DyX (X=Cu, Ag) compounds studied by perturbed angular correlation spectroscopy
58	2007	22583	Artigo de periódico	Internacional	Substitutional and interstitial modification of Nd5Fe17
59	2006	11703	Artigo de periódico	Internacional	Study of the effect of disorder on the local magnestism in Heusler alloys
60	2006	11716	Artigo de periódico	Internacional	Semiconductor properties of Cu-based delafossites revealed by an electric field gradient study
61	2006	11751	Artigo de periódico	Internacional	Do palladium-dopant pairs exist in silicon?
62	2005	10571	Texto completo de evento	Internacional	Perturbed angular correlation gamma-gamma spectroscopy with sup(140)Ce isotope in CeMnsub(2)Gesub(2)
63	2005	10576	Texto completo de evento	Internacional	Study of magnetism in GDTIN(T=NI,PD,CU) compounds by perturbed gamma-gamma angular correlation spectroscopy
64	2005	10586	Texto completo de evento	Internacional	Determinacao do campo hiperfino magnetico em nucleos de sup(148)Ce substituindo Gd em GdAg por electroscopia de correlacao angular perturbada
65	2005	10786	Texto completo de evento	Internacional	Investigation of the local magnetism at rare-earth sites in RAg(R=rare-earth) intermetallic compounds using perturbed gamma-gamma angular correlation spectroscopy
66	2005	11148	Artigo de periódico	Internacional	Correlation between the EFG values measured at the Cd impurity in a group of Cu-based delafossites and the semiconducting properties of the latter
67	2005	11149	Artigo de periódico	Internacional	Temperature dependence of the magnetic hyperfine field at sup(140)Ce on Gd sites in GdAg compound
68	2005	11187	Artigo de periódico	Internacional	Pd-vacancy complex in Si identified with the perturbed angular correlation technique
69	2005	11193	Artigo de periódico	Internacional	Rietveld structure refinement of the cation distribution in ferrite fine particles studied by X-ray powder diffraction
70	2005	11243	Artigo de periódico	Internacional	Temperature dependence of electric field gradient in LaCoOsub(3) perovskite investigated by perturbed angular correlation spectroscopy
71	2004	09577	Texto completo de evento	Internacional	Rietveld structure refinement of the cation distribution in ferrite fine particles studied by X-ray powder diffraction
72	2004	10224	Artigo de periódico	Internacional	Study of the local magnetic environment in LaMnOsub(3) perovskite by measuring hyperfine interactions
73	2004	10250	Artigo de periódico	Internacional	Different nature of magnetism at cerium sublattices in CeMnsub(2)Sisub(2) and CeMnsub(2)Gesub(2) compounds
74	2004	10251	Artigo de periódico	Internacional	Magnetic hyperfine fields on sup(140)Ce probes substituting for the rare earth in RCosub(2) laves phases
75	2004	10260	Artigo de periódico	Internacional	Magnetic hyperfine interaction in CeMnsub(2)Gesub(2) and CeMnsub(2)Sisub(2) measured by perturbed angular correlation spectroscopy
76	2004	10278	Artigo de periódico	Internacional	The low-temperature magnetism of cerium atoms in CeMnsub(2)Sisub(2) and CeMnsub(2)Gesub(2) compounds
77	2004	10463	Artigo de periódico	Internacional	Electronic structure of the n-type doped AgInOsub(2) and CuAlOsub(2) delafossites: similarities and differences
78	2004	10834	Artigo de periódico	Internacional	Structural and magnetic properties of bottom-up synthesized ZnFe2O4 nanoparticles
79	2004	11150	Artigo de periódico	Internacional	Investigation of hyperfine interactions in GdNiIn compound
80	2004	11176	Artigo de periódico	Internacional	Investigation of the magnetic hyperfine field at sup(140)Ce on Gd sites in GdCosub(2) compound
81	2004	12859	Artigo de periódico	Internacional	Measurement of quadrupole interactions in Lasub(1-x)Srsub(x)CoOsub(3) Perovskites using TDPAC technique
82	2003	09746	Artigo de periódico	Internacional	Structural, magnetic and hyperfine properties of Zr(Crsub(1-x)Fesub(x)sub(2) hydrides
83	2003	09759	Artigo de periódico	Internacional	Changes induced by the presence of Zn or Ni impurity at Cu sites in CuAlOsub(2) delafossite
84	2003	10273	Texto completo de evento	Internacional	Different nature of magnetism at cerium sublattices in CeMnsub(2)Sisub(2) and CeMnsub(2)Gesub(2) compounds
85	2003	10274	Texto completo de evento	Internacional	Magnetic hyperfine fields on sup(140)Ce probes substituting for the rare earth in RCosub(2) laves phases
86	2002	08808	Texto completo de evento	Internacional	Viability study for the installation of a SANS beam-line at IPEN/CNEN-SP
87	2002	09077	Artigo de periódico	Internacional	Influence of electron capture after-effects on the stability of sup(111)In(sup(111)Cd)-complexes with organic ligands
88	2002	09091	Artigo de periódico	Internacional	First-principles calculations of hyperfine fields in the CeInsub(3) intermetallic compound
89	2002	09158	Artigo de periódico	Internacional	Influence of Cd impurity on the electronic properties of CuAlOsub(2) delafossite: first-principles calculations
90	2002	09747	Texto completo de evento	Internacional	Structural, magnetic and hyperfine properties of Zr(Crsub(1-x)Fesub(x))sub(2) hydrides
91	2001	08305	Artigo de periódico	Internacional	Hyperfine interaction measurements in LaCrO3 and LaFeO3 perovskites using perturbed angular correlation spectroscopy
92	2001	08931	Resumo de eventos científicos	Internacional	Hyperfine magnetic fields investigation in CeInsub(3)
93	2001	08932	Resumo de eventos científicos	Internacional	Hyperfine interaction study of LaMOsub(3)(M=Cr, Mn, Fe, Co) perovskites
94	2001	09160	Artigo de periódico	Internacional	Study of hyperfine fields in CeInsub(3) by electronic structure calculations
95	2001	09201	Artigo de periódico	Internacional	Investigation of hyperfine interactions in CeInsub(3) by TDPAC
96	2001	09203	Artigo de periódico	Internacional	PAC measurements on new ferromagnetic compound Pdsub(2)TiSn
97	2001	09205	Artigo de periódico	Internacional	Hyperfine interactions in CeTsub(2)Gesub(2)(T=Mn,Co) heavy fermions compounds measured by TDPAC
98	2001	09206	Texto completo de evento	Internacional	Hyperfine interactions in CeTsub(2)Gesub(2)(T=Mn,Co) heavy fermions compounds measured by TDPAC
99	2001	09207	Artigo de periódico	Internacional	Measurement of quadrupole interactions in LaMOsub(3) (M=Cr,Fe,Co) perovskites by TDPAC
100	2001	09208	Texto completo de evento	Internacional	Measurement of quadrupole interactions in LaMOsub(3) (M=Cr,Fe,Co) perovskites by TDPAC
101	2001	09211	Texto completo de evento	Internacional	Study of hyperfine fields in CeInsub(3) by electronic structure calculations
102	2001	22575	Artigo de periódico	Internacional	Time differential perturbed angular 'gamma''gamma'-correlation studies of diethylenetriaminepentaacetic acid complexes with 111In and 111mCd
103	2000	08416	Artigo de periódico	Internacional	Hydrogen absorption effects in the Zr(Fesub(0.5)Crsub(0.5))sub(2) compound
104	2000	09202	Texto completo de evento	Internacional	Investigation of hyperfine interactions in CeInsub(3) by TDPAC
105	2000	09204	Texto completo de evento	Internacional	PAC measurements on new ferromagnetic compound Pdsub(2)TiSn
106	2000	14846	Artigo de periódico	Internacional	Electric field gradient at Nb site in the intermetallic compounds Nb3X(X=Al, In, Si, Ge, Sn) measured by PAC
107	1999	07326	Artigo de periódico	Internacional	Structural and Moessbauer spectroscopic study of hexagonal Laves-phase Zr(Fesub(x)Crsub(1-x))sub(2) alloys and their hydrides
108	1999	07515	Artigo de periódico	Internacional	Magnetic properties of Zr(Crsub(1-x)Fesub(x))sub(2) alloys and their hydrides
109	1999	08417	Texto completo de evento	Internacional	Hydrogen absorption effects in the Zr(Fesub(0.5)Crsub(0.5))sub(2) compound
110	1999	09048	Artigo de periódico	Internacional	Electric field gradient in bixbyite rare-earth oxides Rsub(2)Osub(3) (R=Tl, Eu, Lu, Tm) measured by perturbed angular correlation
111	1998	06332	Artigo de periódico	Internacional	Ionic size induced defects in lead titanatezirconate perovskite studied by TDPAC method
112	1998	07583	Artigo de periódico	Internacional	Delafossite oxides ABOsub(2)(A=Ag, Cu;B=Al, Cr, Fe, In, Nd, Y) studied by perturbed-angular-correlation spectroscopy using a sup(111)Ag(Beta sup(-)) sup(111)Cd probe
113	1998	07605	Resumo de eventos científicos	Nacional	Estudos de ceramicas ferro-eletricas pela tecnica correlacao angular perturbada
114	1998	09049	Artigo de periódico	Internacional	Magnetic hyperfine field at Hf site in Hf(Fesub(1-x)Cosub(x))sub(2) and Hf(Fesub(1-x)Cosub(x))sub(2)Hsub(y) at low Co concentration measured by TDPAC
115	1997	05059	Resumo de eventos científicos	Internacional	Magnetic hyperfine field at Hf site in Hf(Fe sub(1-x)Co sub(x))sub(2) and Hf(Fesub(1-x)Cosub(x))sub(2) Hsub (y) at low Co concentration
116	1997	05063	Texto completo de evento	Internacional	Ionic size induced defects in lead titanatezirconate perovskite studied by TDPAC method
117	1996	02862	Texto completo de evento	Nacional	Interacao quadrupolar no sup(181)Ta em hafnio metalico e oxido de hafnio
118	1996	02883	Resumo de eventos científicos	Nacional	Estudo do ordenamento dos momentos magneticos na hematita atraves da difracao de neutrons
119	1996	02885	Resumo de eventos científicos	Nacional	Campo hiperfino magnetico nas ligas de Heusler Cosub(2)Ysup(1)sub(x)Ysup(2)sub (1-x)Z(Y=Ti,V,Nb,Cr; Z=Al,Sn)
120	1996	02896	Resumo de eventos científicos	Nacional	Estudo da interacao de atomos de hidrogenio com impureza em metais de transicao
121	1996	04064	Artigo de periódico	Internacional	Magnetic hyperfine field in the Heusler alloys Cosub(2)YZ(Y=V, Nb, Ta, Cr; Z=Al, Ga)
122	1996	04067	Artigo de periódico	Internacional	Investigation of the magnetic hyperfine field at the Y site in the Heusler alloys Cosub(2)Ysup(1)sub(1-x)Y sup(2)sub(x)Z(Y=Ti,V, Nb,Cr; Z=Al, Sn)
123	1996	04754	Resumo de eventos científicos	Nacional	Investigacao de um novo tipo de ferromagnetismo metalico fraco pela tecnica de correlacao angular perturbada
124	1995	02869	Resumo de eventos científicos	Nacional	Deteccao de falhas de empilhamento no ZrCrsub(2) e transicao de fase no hidreto ZrCrsub(2)Hsub(3) por meio da difracao de raios x e carrelacao angular perturbada de raios gama
125	1995	02870	Resumo de eventos científicos	Internacional	A study of the Interaction of hydrogen atoms with impurities in transition metals
126	1995	05886	Artigo de periódico	Internacional	X-ray and time differential perturbed angular correlation measurements in ZrCrsub(2) and ZrCrsub(2)Hsub(3) LAVES phase compounds
127	1994	05230	Artigo de periódico	Internacional	An alternative method for computing the influence of multiphonon processes in the inelastic scattering of neutrons: application to metal hydrides
128	1994	05350	Texto completo de evento	Nacional	Sintese por combustao do UAlsub(x): um estudo preliminar
129	1994	05467	Resumo de eventos científicos	Nacional	Estudo da absorcao de hidrogenio em ligas ZrFeCr por espectroscopia Moessbauer
130	1993	04793	Resumo de eventos científicos	Nacional	Estudo da interacao quadrupolar eletrica na liga ZrCrsub(2): influencia da absorcao de hidrogenio
131	1993	04794	Resumo de eventos científicos	Nacional	Efeito dos processos de multifonons no espalhamento inelastico de neutrons lentos em hidretos metalicos
132	1993	04813	Texto completo de evento	Nacional	Hidretacao da esponja de zirconio para obtencao de pos
133	1992	04631	Resumo de eventos científicos	Nacional	Determinacao de sitios ocupados por hidrogenio em ZrCrsub(2)Hsub(x) (x = 0,45; 2 e 3) por espalhamento inelastico de neutrons lentos
134	1991	03924	Resumo de eventos científicos	Nacional	Estudo da focalizacao e monocromatizacao de neutrons em cristais curvados de silicio
135	1991	03925	Resumo de eventos científicos	Nacional	Estudo dos modos localizados de vibracao do hidrogenio no composto ZrCrsub (2)Hsub(x) por meio de espalhamento inelastico de neutrons lentos
136	1990	03594	Série Publicação IPEN	Nacional	Some experiments on cold fusion by deuterium/hydrogen gas infusion in titanium metal/alloy
137	1990	03668	Texto completo de evento	Nacional	Determinacao da frequencia de vibracao do hidrogenio em hidreto de titanio atraves do espalhamento inelastico de neutrons lentos
138	1989	03401	Série Publicação IPEN	Nacional	Quasielastic neutron scattering study of the localized diffusion of hydrogen in Ti sub(0,8)Zr sub(0,2)CrMnH sub(3)
139	1989	03406	Artigo de periódico	Internacional	Localized vibrational motions of hydrogen in the storage compound Ti sub(0.8)Zr sub(0.2)CrMn H sub(3) studied by slow neutron inelastic scattering
140	1988	03053	Série Publicação IPEN	Nacional	Vibrational localized motions of hydrogen in the storage compound Tisub (0,8)Zrsub(0,2) CrMnHsub(3) studied by slow neutron inelastic scattering
141	1988	03153	Resumo de eventos científicos	Nacional	Estudo dos movimentos localizados rapidos do hidrogenio no composto Ti sub (O), 8 sup(Zr)O, 2 sup(CrMnH3) por meio de espalhamento quase elastico de neutrons lentos
142	1987	01538	Tese	Nacional	Estudo das vibracoes e movimentos localizados rapidos do hidrogenio no composto armazenador Ti-0,8 Zr-02 CrMnH-3 por espalhamento de neutrons lentos
143	1987	01603	Resumo de eventos científicos	Nacional	Modos localizados do hidrogenio no composto Ti sub(0.8) Zr sub(0.2) CrMnH sub(3): estudo por espalhamento inelastico de neutrons lentos
144	1984	02627	Artigo de periódico	Internacional	An alternative method of determining the chopper transmission function
145	1978	00373	Dissertação	Nacional	A distribuicao espacial do fluxo de neutrons no nucleo do reator IEA-R1 ,obtida por meio da ativacao de folhas