Search results for "27.20.+n"
showing 8 items of 8 documents
High-accuracy mass measurements on neutron deficient neon isotopes
2005
International audience; The atomic masses of the short-lived nuclides 17Ne and 19Ne have been measured with the triple-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The obtained mass excess for both nuclides deviates significantly from the literature value, in the case of 17Ne about 40 keV. The mass value of 17Ne can be applied for a test of the isobaric multiplet mass equation with respect to an isospin T = 3/2 quartet. In addition, both masses can contribute to the data analysis of collinear laser-spectroscopy experiments where mean-square nuclear-charge radii are determined.
Study of internal structures of 9,10Be and 10B in scattering of 4He from 9Be
2013
A study of inelastic scattering and single-particle transfer reactions was performed by an alpha beam at 63 MeV on a 9$Be target. Angular distributions of the differential cross sections for the 9Be(4He,4He')9Be*, 9Be(4He,3He)10Be and 9Be(4He,t)10B reactions were measured. Experimental angular distributions of the differential cross sections for the ground state and a few low-lying states were analyzed in the framework of the optical model, coupled channels and distorted-wave Born approximation. An analysis of the obtained spectroscopic factors was performed.
Production and Characterization of the $^{7}$H Resonance
2006
Détecteur MAYA; International audience; The 7H resonance was produced via one-proton transfer reaction between a 8He beam at 15.4A MeV and a 12C gas target. The experimental setup was based on the active-target MAYA which allowed a complete reconstruction of the reaction kinematics. The characterization of the identified 7H events resulted in a resonance energy of 600 keV above the 3H+4n threshold and a resonance width of 100 keV. This study represents the first unambiguous proof of the existence of the 7H state.
Study of the $^{15}$O(2p, γ )$^{17}$Ne cross section by Coulomb dissociation of $^{17}$Ne for the rp process of nucleosynthesis
2014
Acta physica Polonica / B 45(2), 229 - 234 (2014). doi:10.5506/APhysPolB.45.229
Libertà personale e libertà di circolazione tra emergenza presente e incertezza futura
2023
The article deals with the notion of personal freedom as it is regulated by art. 13 of Italian Constitution, drawing the main differences with other fundamental rights, in particular with the freedom of movement (art. 16 Cost.). To this end, the paper explores the main doctrinal orientations and the most recent constitutional case-law on the subject; specifically, it proposes a reading of the motivational points of the judgment n. 127 of 2022 of the Italian Constitutional Court which resolved some touchy issues of constitutionality that arose during the pandemic emergency. In conclusion, the text questions, with a look at the near future, on the usability of traditional tools for the protec…
Sicurezza alimentare e salute pubblica al bivio della «nocività» degli alimenti: spunti critici sul d.d.l. n. 2427 del 2020
2022
L’articolo analizza le modifiche operate dal disegno di legge n. 2427/2020 (“Nuove norme in materia di illeciti agro-alimentari”) sui delitti del c.p. contro la salute pubblica e sugli illeciti alimentari della legge n. 283/1962. Si evidenziano profili di incoerenza sistematica e un deficit di coordinamento tra i due distinti piani di tutela. In primo luogo, non è chiara la demarcazione tra le fattispecie delittuose di cui all’art. 5 della legge n. 283/1962 e i delitti codicistici contro la salute pubblica. In secondo luogo, non appare del tutto netta la distinzione tra i reati del citato art. 5 e gli illeciti amministrativi pure previsti dalla legge speciale del 1962. Il nodo più critico s…
Precise Determination of the Unperturbed 8B Neutrino Spectrum
2012
The measurement was performed at the Kernfysisch Versneller Instituut (KVI) at the University of Groningen, The Netherlands.; A measurement of the final state distribution of the 8B $\beta$ decay, obtained by implanting a 8B beam in a double-sided silicon strip detector, is reported here. The present spectrum is consistent with a recent independent precise measurement performed by our collaboration at the IGISOL facility, Jyvâskylä [O. S. Kirsebom et al., Phys. Rev. C 83, 065802 (2011)]. It shows discrepancies with previously measured spectra, leading to differences in the derived neutrino spectrum. Thanks to a low detection threshold, the neutrino spectrum is for the first time directly ex…
Fenomenografia ja variaatioteoria aikuiskasvatustieteen tutkimuksessa
2016
Aikuiskasvatuksen tutkimusmenetelmiä: Aikuiskasvatuksen asiantuntijat esittelevät aikuiskasvatustieteen tutkimusmenetelmiä ja näkökulmia tutkimukseen.