Halo Properties of the First $1 / 2^{+}$ State in ${}^{17}F$ from the ${}^{16}O (p, γ) {}^{17}F$ Reaction

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17 November 1997

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 79 (20) , 3837-3840
https://doi.org/10.1103/physrevlett.79.3837

Abstract

The capture cross section of the reaction

^{16} O (p, γ)^{17} F

was measured in the energy range from

E_{c . m .} = 200 - 3750 keV

using the windowless gas target facility Rhinoceros. The low-energy

S

factor that is dominated by the transition to the

1 / 2^{+}

first excited state in

^{17} F

increases strikingly with decreasing energy. This behavior is explained by the halo properties of this

1 / 2^{+}

state within the framework of the direct capture model.

Keywords

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