Ground state capture in $^{14}$N(p,$\gamma$)$^{15}$O studied above the 259 keV resonance at LUNA

TL;DR

This study presents new measurements of the $^{14}$N(p,$ extgamma$)$^{15}$O reaction's ground state capture at energies above 259 keV, utilizing advanced detection techniques to improve accuracy, relevant for astrophysical models.

Contribution

The paper introduces a novel experimental approach with a Clover-type gamma detector to significantly reduce summing errors in measuring ground state capture.

Findings

Reduced systematic errors in gamma detection

Accurate cross section measurements at specified energies

Enhanced understanding of the reaction mechanism

Abstract

We report on a new measurement of $^{14}$N(p,$\gamma$)$^{15}$O for the ground state capture transition at $E_p$ = 360, 380 and 400 keV, using the 400 kV LUNA accelerator. The true coincidence summing effect --the major source of error in the ground state capture determination-- has been significantly reduced by using a Clover--type gamma detector.