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Autor Fraile Prieto, Luis Mario |
Documentos disponibles escritos por este autor (73)
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Fraile Prieto, Luis Mario ; Mach, H. ; Paziy, V. ; Olaizola, B. ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2017-05-23Lifetimes of low-lying yrast states in neutron-rich Sr-94,Sr-96,Sr-98 have been measured by Germanium-gated gamma-gamma fast timing with LaBr3(Ce) detectors using the EXILL& FATIMA spectrometer at the Institut Laue-Langevin. Sr fission products [...]![]()
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Fraile Prieto, Luis Mario ; Mach, H. ; Paziy, V. ; Olaizola, B. ; Vedia, V. | Amer Physical Soc | 2014-12-01A smooth onset of collectivity in Kr^(88,92,94,96) has been determined from reported B(E2; 2_(1)^(+) ? 0_(1)^(+)) and E(2+ 1 ) values. This is in contrast to the sudden onset in even-even Zr, Mo, and Sr isotopes. Our objective was to complete th[...]![]()
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Fraile Prieto, Luis Mario ; Benito García, Jaime ; Carmona, M. ; Martínez Pérez, María Cristina ; Sánchez-Tembleque Verbo, Victor ; Udías Moinelo, José Manuel ; Vedia Fernández, María Victoria ; Villa Abaunza, Amaia ; otros, ... | American Physical Society | 2019-02-05Excited states in Sn-133 were investigated through the beta decay of In-133 at the ISOLDE facility. The ISOLDE Resonance Ionization Laser Ion Source (RILIS) provided isomer-selective ionization for In-133, allowing us to study separately, and in[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | Elsevier Science BV | 2018-12-01DTAS is a segmented total absorption y-ray spectrometer developed for the DESPEC experiment at FAIR. It is composed of up to eighteen NaI(Tl) crystals. In this work we study the performance of this detector with laboratory sources and also under[...]![]()
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Flavigny, F. ; Pauwels, D. ; Radulov, D. ; Darby, I. J. ; Witte, H. de ; Diriken, J. ; Fedorov, D. V. ; Fedosseev, V. N. ; Fraile Prieto, Luis Mario ; Huyse, M. | Amer Physical Soc | 2015-03-09The low-energy structure of the neutron-rich nucleus Ni-68 has been investigated by measuring the beta decay of the low-spin isomer in Co-68 selectively produced in the decay chain of Mn-68. A revised level scheme has been built based on the cle[...]![]()
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The Borromean drip-line nucleus ¹?Ne has been suggested to possess a two-proton halo structure in its ground state. In the astrophysical rp-process, where the two-proton capture reaction ¹?O(2p,?) ¹?Ne plays an important role, the calculated rea[...]![]()
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Neutron-rich light nuclei and their reactions play an important role in the creation of chemical elements. Here, data from a Coulomb dissociation experiment on N-20,N-21 are reported. Relativistic N-20,N-21 ions impinged on a lead target and the[...]![]()
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gamma rays following the EC/beta(+) and alpha decay of the N = 126, Fr-213 nucleus have been observed at the CERN isotope separator on-line (ISOLDE) facility with the help of gamma-ray and conversion-electron spectroscopy. These gamma rays estab[...]![]()
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The study of the decay of neutron-rich Cs isotopes has two main objectives: on one side beta decay is a perfect tool to access the low-spin structures in the daughter Ba nuclei, where the evolution of octupole deformed shapes can be followed, wh[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | Amer Physical Soc | 2020-08-18Decay spectroscopy of the long-lived states in Tl-186 has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The a decay from the low-spin (2(-)) state in Tl-186 was observed for the first time and a half-life of 3.4(-0.)(4)(+0.5) s was[...]![]()
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Background: Shell evolution can impact the structure of the nuclei and lead to effects such as shape coexistence. The nuclei around Ni-68 represent an excellent study case, however, spectroscopic information of the neutron-rich, Z![]()
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Background: Shell evolution can impact the structure of the nuclei and lead to effects such as shape coexistence. The nuclei around Ni-68 represent an excellent study case, however, spectroscopic information of the neutron-rich, Z![]()
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Fraile Prieto, Luis Mario ; Bembibre Fernández, Adrián ; España Palomares, Samuel ; Espinosa Rodríguez, Andrea ; Freijo Escudero, Clara ; García Pinto, Diego ; López Herraiz, Joaquin ; Martínez Pérez, María Cristina ; Moreno Díaz, Óscar ; Muñoz Muñoz, Laura ; Sánchez Parcerisa, Daniel ; Udías Moinelo, José Manuel | 2021-02-01Proyecto de innovación docente con el objetivo de desarrollar una herramienta que facilite el aprendizaje de las aplicaciones a la Medicina de la Fi?sica Nuclear. Se ha creado el sitio web https://fisnucmed.wordpress.com/. Se abordan, entre otro[...]![]()
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Benito García, Jaime ; Fraile Prieto, Luis Mario ; Carmona, M. ; Galve Lahoz, Pablo ; García Díez, Miguel ; Ibañez, P. ; López Montes, Alejandro ; Martínez, M. C. ; Sánchez Parcerisa, Daniel ; Sánchez Tembleque, Víctor ; Udías Moinelo, José Manuel ; Vedia Fernández, María Victoria ; Villa Abaunza, Amaia ; otros, ... | Amer Physical Soc | 2020-07-29The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) is greatly expanded w[...]![]()
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The first direct experimental evidence of a multiparticle-hole ground state configuration of the neutron-rich Mg-33 isotope has been obtained via intermediate energy (400 A MeV) Coulomb dissociation measurement. The major part similar to(70 +/- [...]![]()
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Background: Odd-odd nuclei, around doubly closed shells, have been extensively used to study proton-neutron interactions. However, the evolution of these interactions as a function of the binding energy, ultimately when nuclei become unbound, is[...]![]()
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The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass 182-188 Hg isotop[...]![]()
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Enhanced time response of 1-in. LaBr_3(Ce) crystals by leading edge and constant fraction techniques
Vedia Fernandez, Victoria ; Mach Henryk, Andrzej ; Fraile Prieto, Luis Mario ; Udías Moinelo, José Manuel ; Lalkovski, S. | Elsevier Science BV | 2015-09-21We have characterized in depth the time response of three detectors equipped with cylindrical LaBr_3(Ce) crystals with dimensions of 1-in. in height and 1-in. in diameter, and having nominal Ce doping concentration of 5%, 8% and 10%. Measurement[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2017-07-27The beta decay of Tc-100 has been studied by using the total absorption gamma-ray spectroscopy technique at the Ion Guide Isotope Separator On-Line facility in Jyvaskyla. In this work the new Decay Total Absorption gamma-ray Spectrometer in coin[...]![]()
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The time-reversed reaction O-15(2p, gamma) Ne-17 has been studied by the Coulomb dissociation technique. Secondary 17Ne ion beams at 500 AMeV have been produced by fragmentation reactions of Ne-20 in a beryllium production target and dissociated[...]![]()
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Fraile Prieto, Luis Mario ; Carmona Gallardo, Mariano ; Vedia Fernández, María Victoria | Jagellonian University | 2017-03A fast-timing experiment was performed at the Argonne National Laboratory in December 2015 and January 2016, measuring decay radiation of fission products from a Cf-252 fission source. Details of the set-up, integration with Digital Gammasphere,[...]![]()
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The beta-decay of Zn-81 to the neutron magic N = 50 nucleus Ga-81, with only three valence protons with respect to Ni-78, was investigated. The study was performed at the ISOLDE facility at CERN by means of gamma spectroscopy. The 81Zn half-life[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; Ibáñez García, Paula Beatriz ; Paziy, Vadym ; Pérez Liva, Mailyn ; Picado, E. ; Vidal, M. | Amer Physical Soc | 2016-04-04The levels in Sn-129 populated from the beta(-) decay of In-129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2(+) state and the 3/2(+) ground state in 129Sn are ex[...]![]()
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Fraile Prieto, Luis Mario ; Gallardo, M. C. ; Vedia Fernández, María Victoria ; otros, ... | Amer Physical Soc | 2018-10-03The C-12(alpha,gamma)O-16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced a width, gamma(11), of the bound 1(-) l[...]![]()
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The ground-state configuration of ³?Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ~ 403 MeV/nucleon. The measured inclusive differential CD cross section for ³?Al, integra[...]![]()
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Benito García, Jaime ; Fraile Prieto, Luis Mario ; Sánchez-Tembleque Verbo, Victor ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2020-02-26We report on the measurement of lifetimes of excited states in the near-mid-shell nuclei Dy-164,Dy-166 using the gamma-ray coincidence fast-timing method. The nuclei of interest were populated using reactions between an O-18 beam and a gold-back[...]![]()
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Fraile Prieto, Luis Mario ; Mach, Henryk Andrzej ; Paziy, V. ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2017-02-15The half-life of the 15/ 2(1)(+) state of the 3-valence-proton nucleus I-135 has been measured to be 1.74(8) ns using the EXILL-FATIMA mixed array of Ge and LaBr3 detectors. The nuclei were produced following the cold neutron-induced fission of [...]![]()
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García Díez, Miguel ; Sánchez Tembleque, Víctor ; Fraile Prieto, Luis Mario ; Udías Moinelo, José Manuel | IEEE | 2019The high energy resolution inorganic scintillators as LaBr3(Ce) have a great importance in the field of nuclear physics and medical applications since they offer great resolution in energy and time. On the other hand, SiPMs are gaining relevance[...]![]()
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Fraile Prieto, Luis Mario ; Benito García, Jaime ; Carmona Gallardo, Mariano ; Martínez Pérez, Cristina ; Sánchez-Tembleque Verbo, Victor ; Udías Moinelo, José Manuel ; Vedia Fernández, María Victoria ; Villa Abaunza, Amaia ; otros, ... | Jagiellonian Univ Press | 2018-03Excited states in the neutron-rich isotope Sn-133 were studied via the beta decay of In-133. Isomer selective ionization using the ISOLDE RILIS enabled the beta decays of In-133(gs) (I-pi = 9/2(+)) and In-133m (I-pi = 1/2(-)) to be studied indep[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | Elsevier Science BV | 2019-06-10Gamow-Teller beta decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Delta n = 0 requirement plays a major role in the beta decay of heavy neutron-rich nuclei, affecting the [...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, .. | American Physical Society | 2019-01-30Even mass neutron-rich niobium isotopes are among the principal contributors to the reactor antineutrino energy spectrum. They are also among the most challenging to measure due to the refractory nature of niobium, and because they exhibit isome[...]![]()
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Lifetimes of low- and high-spin states in the odd-A nucleus Hf-177 were measured during the EXILL&FATIMA campaign using a spectrometer equipped with eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors. For the determination of lif[...]![]()
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Fraile Prieto, Luis Mario ; Mach, H. ; Paziy, Vadym ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2019-07-16Lifetimes of intermediate-spin states in two rotational bands of Zr-99 have been measured. These states were populated following the neutron-induced fission of U-235 at the PF1B beamline of the Institut Laue-Langevin, Grenoble, during the EXILL-[...]![]()
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A new level scheme of 80Ga has been determined. This nucleus was populated following the ?? decay of 80Zn at ISOLDE, CERN. The proposed level scheme is significantly different compared to the previously reported one and contains 26 levels up to [...]![]()
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Excited states of the neutron-rich nucleus Ce-148 have been populated by neutron-induced fission of a U-235 target. Its electromagnetic decays were studied by means of gamma-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes o[...]![]()
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Background: Lifetimes of nuclear excited states in fission fragments have been studied in the past following isotope separation, thus giving access mainly to the fragments' daughters and only to long-lived isomeric states in the primary fragment[...]![]()
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The reactions C-13(alpha,n)O-16 and Ne-22(alpha,n)Mg-25 are the primary sources of neutrons for the astrophysical s-process. The feasibility of cross section measurements within the respective Gamow windows is discussed in quantitative terms for[...]![]()
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Benito García, Jaime ; Fraile Prieto, Luis Mario ; Sánchez-Tembleque Verbo, Victor ; Vedia Fernández, María Victoria | Elsevier Science BV | 2020-02-10We report on the first measurement of the half-lives of K-pi = 11(-) and 12(+) four-quasiparticle states in the even-even nucleus W-178. The sub-nanosecond half-lives were measured by applying the centroid shift method to data taken with LaBr3(C[...]![]()
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A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the ?-delayed three-proton decay of 31Ar is presented for the first time together with a qua[...]![]()
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Grieger, M. ; Hensel, T. ; Agramunt, J. ; Bemmerer, D. ; Degering, D. ; Dillmann, I. ; Fraile Prieto, Luis Mario ; Jordan, D. ; Koster, U. ; Marta, M. ; Mueller, S. E. ; Szuecs, T. ; Tain, J. L. ; Zuber, K. | Amer Physical Soc | 2020-06-24Ambient neutrons may cause significant background for underground experiments. Therefore, it is necessary to investigate their flux and energy spectrum in order to devise a proper shielding. Here, two sets of altogether ten moderated He-3 neutro[...]![]()
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Rapid shape evolutions near A = 100 are now the focus of much attention in nuclear science. Much of the recent work has been centered on isotopes with Z![]()
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Several new subnanosecond lifetimes were measured in Pd-109 using the fast-timing beta gamma gamma (t) method. Fission fragments of the A = 109 mass chain were produced by bombarding natural uranium with 30 MeV protons at the Jyvaskyla Ion Guide[...]![]()
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The structure of Si-34 was studied through gamma spectroscopy separately in the beta(-) decays of Mg-34 and Al-34 at the ISOLDE facility of CERN. Different configurations in Si-34 were populated independently from the two recently identified bet[...]![]()
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Alvarez Rodríguez, R. ; Fraile Prieto, Luis Mario ; López Herraiz, Joaquin ; Martinez Pérez, M. ; Moreno, O. ; Udías Moinelo, José Manuel | IOP publishing ltd | 2016The nucleosynthesis of elements beyond iron is dominated by neutron captures in the s and r processes. However, 32 stable, proton-rich isotopes cannot be formed during those processes, because they are shielded from the s-process flow and r-proc[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | American Physical Society | 2020-05-18The ? decay of Hg-207 into the single-proton-hole nucleus Tl-207 has been studied through gamma-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the pi s(1/2)(-1), pi d(3/2)(-1) and[...]![]()
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The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nucl[...]![]()
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The results of the IS530 experiment at ISOLDE revealed new information concerning several nuclei close to the N approximate to 20 'Island of Inversion' - Mg-34, Al-34, Si-34. The half-life of Mg-34 was found to be three times larger than the ado[...]![]()
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Olaizola, B. ; Fraile Prieto, Luis Mario ; Mach, Henryk Andrzej ; Nowacki, F. ; Poves, A. ; Aprahamian, A. ; Briz, J. A. ; Cal González, J. ; Ghita, D. ; Koster, U. ; Kurcewicz, W. ; Lesher, S. R. ; Pauwels, D. ; Picado, E. ; Radulov, D. ; Simpson, G. S. ; Udías Moinelo, José Manuel | American Physical Society | 2019-02-25The low-energy structure of Co-65 was studied by means of gamma(-) and fast-timing spectroscopy at the ISOLDE/CERN facility. The known level scheme of Co-65 populated following the beta(-) decay of Fe-65 was expanded. The experimental results we[...]![]()
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The quasi-free scattering reactions C-11(p, 2p) and C-10,C-11,C-12(p, pn) have been studied in inverse kinematics at beam energies of 300-400 MeV/u at the (RB)-B-3-LAND setup. The outgoing proton-proton and proton-neutron pairs were detected in [...]