Cross-sections of 10B(α, p)13C nuclear reaction for boron analysis

Chen, H.; Wang, X.M.; Shao, Lin; Liu, J.R.; Yen, Anthony; Chu, W. K.

doi:10.1016/s0168-583x(03)01189-3

Cited by 10 publications

(8 citation statements)

References 7 publications

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“…A generally consistent R-matrix fit was found that could reproduce the data of Shire et al [8], Chen et al [14], Van der Zwan and Geiger [13] and McIntyre et al [16] as well as those of the present measurement. The 10 B(α, p 0 ) 13 C data of Manning and Singh [10] are somewhat discrepant from those of Shire et al [8] over their region of overlap, most notably for the three data points in the vicinity of the resonance at E c.m.…”

Section: R-matrix Analysissupporting

confidence: 88%

“…7). Similarly, the 10 B(α, p 0 ) 13 C data of Chen et al [14] also extend just below this same resonance. McIntyre et al [16] has made the lowest energy study of the 10 B(α, α) 10 B reaction, but only the highest energy resonance considered in the R-matrix analysis can be ob-served.…”

Section: R-matrix Analysissupporting

confidence: 55%

“…Comparisons of the present 10 B+α data with excitation curves from Shire et al [8], Manning and Singh [10], Chen et al [14], Van der Zwan and Geiger [13] and McIntyre et al [16] are shown in Fig. 10.…”

Section: R-matrix Analysismentioning

confidence: 83%

“…However, it was dropped from the compilation at some point, likely because subsequent experiments failed to observe it. In addition, a level has been observed at E x = 11.956 (5) MeV (E α = 0.481 MeV) with a high resolution (≈30 keV) 10 B( 6 Li, d) 14 N measurement, but the results have not been published [80].…”

Section: Discussionmentioning

confidence: 99%

“…Gallmann et al [11] and Stanley [12] made measurements of secondary γ-rays from the 10 B(α, pγ) 13 C reaction down to E α = 1.0 MeV. Additionally, measurements have been made down to E α = 1.4 MeV by Van der Zwan and Geiger [13] for the 10 B(α, n) 13 N reaction at θ lab = 0 and 90 • , Chen et al [14] for the 10 B(α, p 0 ) 13 C reaction at θ lab = 90 • and Talbott and Heydenburg [15] for the 10 B(α, pγ) 13 C reaction at θ lab = 90 • . McIntyre et al [16] have also made low energy measurements of the 10 B(α, α 0 ) 10 B reaction down to E α = 1.0 MeV.…”

Section: Introductionmentioning

confidence: 99%

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Low-energy cross-section measurement of the B10(α,n)N13 reaction and its impact on ne

et al. 2020

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Nucleosynthesis in the first generation of massive stars offers a unique setting to explore the creation of the first heavier nuclei in an environment free of impurities from earlier stellar generations. In later generations of massive stars, hydrogen burning occurs predominantly through the CNO cycles, but without the carbon, nitrogen, and oxygen to catalyze the reaction sequence, first stars would have to rely on the inefficient pp-chains for their energy production. Observations of second and third generation stars show pronounced abundances of carbon and oxygen isotopes, which suggests a rapid conversion of the primordial abundances to heavier elements. While the triplealpha-process primarily facilitates this conversion, there are alternative reaction sequences, such as the 2 H(α, γ) 6 Li(α, γ) 10 B(α, n) 13 N, that may play a significant role. To study such alternate reaction pathways for production of carbon and heavier nuclei, a number of new measurements are needed. In this work, new measurements are reported for the 10 B(α, n) 13 N reaction, extending the cross section down to 575 keV incident α-particle energy. The measurements were made using a state-of-the-art deuterated liquid scintillator and a spectrum unfolding technique. An R-matrix analysis was performed in order to facilitate a comparison of the underlying nuclear structure with the reaction measurements. An unexpected upturn is observed in the low energy S-factor that indicates the presence of a new low energy resonance. A revised reaction rate is determined that takes into account the present data as well as other previous measurements from the literature that were previously neglected.

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