| Issue |
EPJ Web Conf.
Volume 275, 2023
11ᵗʰ European Summer School on Experimental Nuclear Astrophysics
|
|
|---|---|---|
| Article Number | 02004 | |
| Number of page(s) | 4 | |
| Section | Session 2: Contribution by Young Researchers | |
| DOI | https://doi.org/10.1051/epjconf/202327502004 | |
| Published online | 03 February 2023 | |
https://doi.org/10.1051/epjconf/202327502004
The challenging direct measurement of the 65 keV resonance strength of the 17O(p, γ)18F reaction at LUNA
1 Università degli Studi di Napoli and INFN Division of Napoli, Via Cintia, 80126 Napoli (Italy)
* e-mail: riccardo.gesue@na.infn.it
Published online: 3 February 2023
The 17O(p, γ)18F reaction plays a crucial role in AGB nucleosynthesis as well as in explosive hydrogen burning occurring in type Ia novae. At the temperatures of interest for the former scenario ( 20MK < T < 80MK) the main contribution to the astrophysical reaction rate comes from the poorly constrained ER = 65 keV resonance. The strength of this resonance is presently determined only through indirect measurements, with an adopted value ωγ =(16 ± 3) peV.
A new high sensitivity setup was installed at LUNA, located at LNGS. The underground location of the LUNA 400kV accelerator guarantees a reduction of the cosmic ray background by several orders of magnitude. The residual background was further reduced installing a devoted shielding. On the other hand, to increase the efficiency, the 4π BGO detector was coupled with Al target chamber and holder. With more than 400C accumulated on Ta2O5 targets, nominal 17O enrichment of 90%, the LUNA collaboration has performed the first direct measurement of the 65 keV resonance strength.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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