Strength measurement of the $E_α^{lab}$ = 830 keV resonance in $^{22}\rm{Ne}(α,n)^{25}\rm{Mg}$ reaction using a stilbene detector
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| author | Shahina deBoer, R. J. Gorres, J. Fang, R. Febbraro, M. Kelmar, R. Matney, M. Manukyan, K. Nattress, J. T. Robles, E. Ruland, T. J. King, T. T. Sanchez, A. Sidhu, R. S. Stech, E. Wiescher, M. |
| author_facet | Shahina deBoer, R. J. Gorres, J. Fang, R. Febbraro, M. Kelmar, R. Matney, M. Manukyan, K. Nattress, J. T. Robles, E. Ruland, T. J. King, T. T. Sanchez, A. Sidhu, R. S. Stech, E. Wiescher, M. |
| contents | The interplay between the $^{22}$Ne$(α,γ)^{26}$Mg and the competing $^{22}$Ne$(α,n)^{25}$Mg reactions determines the efficiency of the latter as a neutron source at the temperatures of stellar helium burning. In both cases, the rates are dominated by the $α$-cluster resonance at 830 keV. This resonance plays a particularly important role in determining the strength of the neutron flux for both the weak and main $s$-process as well as the $n$-process. Recent experimental studies based on transfer reactions suggest that the neutron and $γ$-ray strengths for this resonance are approximately equal. In this study, the $^{22}$Ne$(α,n)^{25}$Mg resonance strength has been remeasured and found to be similar to the previous direct studies. This reinforces an 830 keV resonance strength that is approximately a factor of three larger for the $^{22}$Ne$(α,n)^{25}$Mg reaction than for the $^{22}$Ne$(α,γ)^{26}$Mg reaction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_01393 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Strength measurement of the $E_α^{lab}$ = 830 keV resonance in $^{22}\rm{Ne}(α,n)^{25}\rm{Mg}$ reaction using a stilbene detector Shahina deBoer, R. J. Gorres, J. Fang, R. Febbraro, M. Kelmar, R. Matney, M. Manukyan, K. Nattress, J. T. Robles, E. Ruland, T. J. King, T. T. Sanchez, A. Sidhu, R. S. Stech, E. Wiescher, M. Nuclear Experiment The interplay between the $^{22}$Ne$(α,γ)^{26}$Mg and the competing $^{22}$Ne$(α,n)^{25}$Mg reactions determines the efficiency of the latter as a neutron source at the temperatures of stellar helium burning. In both cases, the rates are dominated by the $α$-cluster resonance at 830 keV. This resonance plays a particularly important role in determining the strength of the neutron flux for both the weak and main $s$-process as well as the $n$-process. Recent experimental studies based on transfer reactions suggest that the neutron and $γ$-ray strengths for this resonance are approximately equal. In this study, the $^{22}$Ne$(α,n)^{25}$Mg resonance strength has been remeasured and found to be similar to the previous direct studies. This reinforces an 830 keV resonance strength that is approximately a factor of three larger for the $^{22}$Ne$(α,n)^{25}$Mg reaction than for the $^{22}$Ne$(α,γ)^{26}$Mg reaction. |
| title | Strength measurement of the $E_α^{lab}$ = 830 keV resonance in $^{22}\rm{Ne}(α,n)^{25}\rm{Mg}$ reaction using a stilbene detector |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2409.01393 |