English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

In this Letter we report on the first inverse kinematics measurement of keyresonances in the ${}^{22}\text{Ne}(p,\gamma)^{23}\text{Na}$ reaction whichforms part of the NeNa cycle, and is relevant for ${}^{23}$Na synthesis inasymptotic giant branch (AGB) stars. An anti-correlation in O and Na abundancesis seen across all well-studied globular clusters (GC), however, reaction-rateuncertainties limit the precision as to which stellar evolution models canreproduce the observed isotopic abundance patterns. Given the importance of GCobservations in testing stellar evolution models and their dependence on NeNareaction rates, it is critical that the nuclear physics uncertainties on theorigin of ${}^{23}$Na be addressed. We present results of direct strengthsmeasurements of four key resonances in${}^{22}\text{Ne}(p,\gamma)^{23}\text{Na}$ at E$_{{\text c.m.}}$ = 149 keV, 181keV, 248 keV and 458 keV. The strength of the important E$_{{\text c.m.}}$ =458 keV reference resonance has been determined independently of otherresonance strengths for the first time with an associated strength of$\omega\gamma$ = 0.439(22) eV and with higher precision than previouslyreported. Our result deviates from the two most recently published resultsobtained from normal kinematics measurements performed by the LENA and LUNAcollaborations but is in agreement with earlier measurements. The impact of ourrate on the Na-pocket formation in AGB stars and its relation to the O-Naanti-correlation was assessed via network calculations. Further, the effect onisotopic abundances in CO and ONe novae ejecta with respect to pre-solar grainswas investigated.

First inverse kinematics measurement of key resonances in the ${}^{22}\text{Ne}(p,\gamma)^{23}\text{Na}$ reaction at stellar temperatures