Search for a resonance in the ^14N(p,γ)^15O reaction at Ep = 127 keV
Abstract
The ^14N(p,γ)^15O reaction regulates energy production in main-sequence and red giant stars via the CN cycle. Recent experimental evidence was presented for a new resonance at Ep = 127 keV which would significantly increase the ^14N(p,γ)^15O reaction rate for temperatures near 10^8 K. We investigated the region Ep = 110 - 150 keV for a low energy resonance. The experimental setup consisted of a 100 μA proton beam incident on thick TaN targets at the Laboratory for Experimental Nuclear Astrophysics (LENA) located at TUNL. A HPGe detector located along the incident beam axis detected outgoing gamma rays. We found no evidence for a resonance and upper limit calculations imply a negligible impact on the ^14N(p,γ)^15O reaction rate.
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- October 2002
- Bibcode:
- 2002APS..DNP.HC006R