Search results for "level"

In-beam spectroscopic study of $^{244}$Cf

2018

The ground-state rotational band of the neutron-deficient californium ( Z = 98 ) isotope 244 Cf was identified for the first time and measured up to a tentative spin and parity of I π = 20 + . The observation of the rotational band indicates that the nucleus is deformed. The kinematic and dynamic moments of inertia were deduced from the measured γ -ray transition energies. The behavior of the dynamic moment of inertia revealed an up-bend due to a possible alignment of coupled nucleons in high- j orbitals starting at a rotational frequency of about ℏ ω = 0.20 MeV . The results were compared with the systematic behavior of the even-even N = 146 isotones as well as with available theoretical c…

Shape coexistence in the odd-odd nucleus 98Y : the role of the g9/2 neutron extruder

2017

Excited states in 98Y, populated in neutron-induced fission of 235U and in spontaneous fission of 248Cm and 252Cf, have been studied by means of γ spectroscopy using the Lohengrin fission-fragment separator at ILL Grenoble and the EXILL, Eurogam2, and Gammasphere Ge arrays. Two new isomers have been found in 98Y: a deformed one with T1/2 = 180(7) ns and a rotational band on top of it, and a spherical one with T1/2 = 0.45(15)μs, analogous to the 8+ isomer in 96Y, corresponding to the (νg7/2,πg9/2)8+ spherical configuration. Using the JYFLTRAP Penning trap, an accurate excitation energy of 465.7(7) keV has been determined for the 2.36-s isomer in 98Y. This result and the studies of excited le…

Prompt and delayed spectroscopy of 203At : Observation of a shears band and a 29/2+ isomeric state

2018

Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of 203 At ( N = 118 ) significantly. We have observed an isomeric [ τ = 14.1 ( 3 ) μ s ] state with a spin and parity of 29 / 2 + . The isomeric state is suggested to originate from the π ( h 9 / 2 ) ⊗ ∣ ∣ 202 Po ; 11 − ⟩ coupling, and it is depopulated through 286 keV E 2 and 366 keV E 3 transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism. peerReviewed

Effects of canopy covering on yield and quality of ‘Nero d’Avola’ (Vitis vinifera L.) grown in hot-arid climate condition

The impact of climate change on grapevine ecophysiology and vineyard management is predicted to be a serious problem in the next years. In fact, it has an influence on the fruit-set, yield, and in modulating decoupling between technological and phenolic ripening. Thus, it is essential to identify costeffective and easy-to-implement solutions to deal with the issue. For this purpose, the present study aims to test different shade treatments (ST) applied directly to the canopy of ′Nero d’Avola′ cultivar (Vitis vinifera L.), trying to limit the excess of light and heat that, usually occur in hot-arid climate areas as in Sicily. Two ST were imposed during the 2020 vegetative season from fruit s…

Autonomy and Cooperation in Federalizing Models of Cultural Policy. Comparative Analysis of the Cases of Germany, USA, Canada, Switzerland, United Ki…

2018

Desde los años ochenta diversas investigaciones han profundizado en la comparación de los diversos modelos de las políticas culturales nacionales. Asimismo, el interés por la descentralización cultural y el reconocimiento de la diversidad cultural y nacional ha crecido en paralelo a la importancia de la acción cultural pública de las regiones y las municipalidades. Sin embargo, no se han desarrollado estudios que permitan comparar de forma sistemática la relación entre los modelos de federalismo y los modelos de política cultural de un Estado. Este trabajo persigue cubrir este vacío realizando una comparativa de seis países federales o casi federales que han destacado en su desarrollo de po…

Lexical cross-linguistic influence in the written English production of Finnish 6th grade pupils

2014

Kielten väliset vaikutteet (transfer) ovat monitahoinen ilmiö, jota on tutkittu kielen oppimisen viitekehyksessä aktiivisesti 1900-luvun puolivälistä lähtien. Transfer-tutkimuksessa on kuitenkin perinteisesti keskitytty tutkimaan lähinnä äidinkielen vaikutuksia opittavaan vieraaseen kieleen. Useamman vieraan kielen vaikutukset toisiinsa ovat tuoreempi ja etenkin suomalaisessa kontekstissa/tutkimusympäristössä vielä niukasti tutkittu tutkimuskohde. Tässä tutkielmassa tarkasteluun on sen vuoksi valittu äidinkielen tuomien vaikutusten lisäksi myös vieraan kielen vaikutukset englannin kielen sanaston oppimiseen ja käyttöön. Tarkasteltavina lähdekielinä ovat suomi ja ensimmäisenä tai toisena vie…

Isomeric 13/2+ state in 201Fr

2020

We have identified an isomeric state in 201Fr for which we propose a spin and parity of 13/2 +, and interpret it as arising from the π(i13/2 ) configuration. A half-life of 720(40) ns was measured, corresponding to B(M2) = 0.17(2) W.u., in good agreement with those of other 13/2 + → 9/2 − [π(i13/2 ) → π(h9/2 )] transitions observed in other nuclei in the region. The nuclei of interest were produced in a fusion-evaporation reaction and their decay properties were investigated using the GREAT spectrometer at the focal plane of the RITU gas-filled recoil separator. peerReviewed

Fine structure in the α decay of high-spin isomers in 155Lu and 156Hf

2018

Fine structure in the α decay of high-spin isomers in 155Lu(25/2−) and 156Hf (8+) has been studied for the first time using αγ -coincidence analysis. Three new α decays from 155Lu(25/2−) and two from 156Hf (8+) have been identified, populating seniority s > 1 states in the N = 82 nuclei 151Tm and 152Yb, respectively. The reduced hindrance factors of the α decays support the previous configuration assignments of the populated states. This is the first observation of states with excitation energy greater than 1.5 MeV being populated following α decay in nuclei outside of the 208Pb region. peerReviewed

Lifetime measurements of lowest states in the π g7/2 ⊗ νh11/2 rotational band in 112I

2018

A differential-plunger device was used to measure the lifetimes of the lowest states in the πg7/2 ⊗ νh11/2 rotational band in doubly odd 112I with the 58Ni(58Ni, 3pn) reaction. A differential decay curve method was performed using the fully shifted and degraded γ -ray intensity measurements as a function of target-to-degrader distance. The lifetimes of the lowest three states in the πg7/2 ⊗ νh11/2 band in 112I were measured to be 124(30), 130(25), and 6.5(5) ps, respectively. As the lifetimes of successive excited states in a rotational band are expected to decrease with increasing excitation energy, these measurements suggest that the order of the transitions in the established band in 112…

Effect of consumers’ origin on perceived sensory quality, liking and liking drivers: A cross-cultural study on European cheeses

2021

Abstract We aim at studying consumers’ Perceived Sensory Quality (PSQ) concept. We manipulated a priori both familiarity (contrast local vs. foreign cheeses) and quality level (contrast PDO or traditional cheeses vs. their non-PDO and/or industrial counterpart). The study was run in four European countries. Thus, eight cheeses (one PDO or traditional cheese and one non-PDO cheese from each of the four European countries) were assessed by a total of 438 consumers (from 100 to 120 consumers from each region) in terms of PSQ and liking. The cheeses were also described by a trained panel. PSQ depended on both consumers’ and cheeses’ origin. The main finding is that in the three countries with P…