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- W2920452242 abstract "The spectroscopy of $^{19}mathrm{F}$ is of interest for nuclear astrophysics and nuclear structure. In astrophysics, fluorine and the reactions producing and destroying it play a key role in constraining models of stars in different evolutionary stages, such as the asymptotic giant branch (AGB) stars, responsible of the production of about half of the elements heavier than Fe. In nuclear structure, $^{19}mathrm{F}$ has been subject to many investigations aiming at the identification of $ensuremath{alpha}$ and more exotic cluster structures. Also, its spectroscopy is very useful to constrain the nuclear properties of the $^{19}mathrm{Ne}$ mirror nucleus. In this work, we report on the measurement of the $^{15}mathrm{N}text{ensuremath{-}}ensuremath{alpha}$ elastic scattering using the thick target inverse kinematics approach, allowing us to span a very large fluorine excitation energy range ($ensuremath{sim}6$--10 MeV). The use of $^{15}mathrm{N}text{ensuremath{-}}ensuremath{alpha}$ scattering proves very useful to study $ensuremath{alpha}$ clustering in $^{19}mathrm{F}$ thanks to the likelihood for populating states with such a structure. Indeed, the $R$-matrix analysis of the measured differential cross sections shows the occurrence of many candidate $ensuremath{alpha}$-cluster states of $^{19}mathrm{F}$. It also calls for the redefinition of the spin-parity and widths of a number of $^{19}mathrm{F}$ states with respect to what reported in the literature." @default.
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- W2920452242 date "2019-03-01" @default.
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- W2920452242 title "Observation of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mmultiscripts><mml:mi mathvariant=normal>N</mml:mi><mml:mprescripts /><mml:none /><mml:mn>15</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mi>α</mml:mi></mml:mrow></mml:math> resonant structures in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mmultiscripts><mml:mi mathvariant=normal>F</mml:mi><mml:mprescripts /><mml:none /><mml:mn>19</mml:mn></mml:mmultiscripts></mml:math> using the …" @default.
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- W2920452242 doi "https://doi.org/10.1103/physrevc.99.034301" @default.
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