Erratum: Constraining the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>S</mml:mi></mml:mrow></mml:math>factor of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">N</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>15</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi></mml:mrow></mml

LeBlanc, P. J.; Imbriani, G.; Junker, M.; Azuma, R.E.; Beard, M.; Bemmerer, D.; Best, A.; Broggini, C.; Caciolli, A.; Corvisiero, P.; Costantini, H.; Couder, M.; deBoer, R. J.; Elekes, Z.; Falahat, S.; Formicola, A.; Fülöp, Zs.; Gervino, G.; Guglielmetti, A.; Gustavino, C.; Gyürky, Gy.; Käppeler, F.; Kontos, A.; Kuntz, R.; Leiste, H.; Lemut, A.; Li, Q.; Limata, B.; Marta, M.; Mazzocchi, C.; Menegazzo, R.; O’Brien, S.; Palumbo, A.; Prati, P.; Roca, V.; Rolfs, C.; Alvarez, C. Rossi; Somorjai, E.; Stech, E.; Straniero, O.; Strieder, F.; Tan, Wanpeng; Terrasi, F.; Trautvetter, H. P.; Uberseder, E.; Wiescher, M.

doi:10.1103/physrevc.84.019902

Cited by 22 publications

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“…As a first step, a fit similar to that of Ref. [10] is reproduced. In addition, several other fitting techniques are tested using different permutations of ANC values and background pole assumptions as given in Table III.…”

Section: R-matrix Approachmentioning

confidence: 99%

“…Ref. [10]'s analysis achieved good agreement between the experimental data and the R-matrix fit, but did so by allowing all the R-matrix fit parameters to vary freely even though some parameters were not well constrained by the 15 N(p, γ) 16 O data alone. The fit resulted in a value for the proton ANC of the ground state which was considerably larger than that reported in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[10] had been previously omitted as they required corrections for target degradation. These corrections have been made and the new data points are included in the present analysis with the correct normalization.…”

Section: R-matrix Approachmentioning

confidence: 99%

“…[10], only the 15 N(p, γ 0 ) 16 O data was used for an R-matrix analysis, with the partial widths (Γ p , Γ α0 , and Γ γ0 ) of the two 1 − resonances at E x = 12.45 and 13.09 MeV and the strength of the proton direct capture to the ground state (ANC) allowed to vary as free fit parameters. This analysis resulted in unphysical values for some of the partial widths and for the ANC as noted in that work (Sec.…”

Section: R-matrix Approachmentioning

confidence: 99%

“…[9] and [10] where several Rmatrix fits have been made to the recent 15 N(p, γ 0 ) 16 O data of Ref. [10]. Ref.…”

Section: Introductionmentioning

confidence: 99%

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R-matrix analysis of16O compound nucleus reactions

et al. 2013

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Background Over the last 60 years, a large amount of experimental nuclear data has been obtained for reactions which probe the 16 O compound nucleus near the alpha and proton separation energies, the energy regimes most important for nuclear astrophysics. Difficulties and inconsistencies in R-matrix fits of the individual reactions prompt a more complete analysis.Purpose Determine the level of consistency between the wide variety of experimental data using a multiple entrance/exit channel R-matrix framework. Using a consistent set of data from multiple reaction channels, attain an improved fitting for the 15 N(p, γ0) 16 O reaction data.Methods Reaction data for all available reaction channels were fit simultaneous using a multichannel R-matrix code.Results Over the wide range of experimental data considered, a high level of consistency was found, resulting in a single consistent R-matrix fit which described the broad level structure of 16 O below Ex = 13.5 MeV. The resulting fit was used to extract an improved determination of the low energy S-factor for the reactions 15 N(p, γ) 16 O and 15 N(p, α) 12 C. ConclusionThe feasibility and advantages of a complete multiple entrance/exit channel R-matrix description for the broad level structure of 16 O has been achieved. A future publication will investigate the possible effects of the multiple channel analysis on the reaction 12 C(α, γ) 16 O.

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Section: R-matrix Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: R-matrix Approachmentioning

confidence: 99%

Section: R-matrix Approachmentioning

confidence: 99%

“…[9] and [10] where several Rmatrix fits have been made to the recent 15 N(p, γ 0 ) 16 O data of Ref. [10]. Ref.…”

Section: Introductionmentioning

confidence: 99%

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R-matrix analysis of16O compound nucleus reactions

et al. 2013

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Radiative n 10B Capture at Thermal and Astrophysical Energies

Dubovichenko

2014

Russ Phys J

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We have studied the neutron-capture reactions 10,11 B(n, ) and the role of the 11 B(n, ) reaction in seeding r-process nucleosynthesis. The possibility of the description of the available experimental data for cross sections of the neutron capture reaction on 10 B at thermal and astrophysical energies, taking into account the resonance at 475 keV, was considered within the framework of the modified potential cluster model (MPCM) with forbidden states and accounting for the resonance behavior of the scattering phase shifts. In the framework of the same model the possibility of describing the available experimental data for the total cross sections of the neutron radiative capture on 11 B at thermal and astrophysical energies were considered with taking into account the 21 and 430 keV resonances. Description of the available experimental data on the total cross sections and astrophysical S-factor of the radiative proton capture on 11 B to the ground state of 12 C was treated at astrophysical energies. The possibility of description of the experimental data for the astrophysical S-factor of the radiative proton capture on 14 C to the ground state of 15 N at astrophysical energies, and the radiative proton capture on 15 N at the energies from 50 to 1500 keV was considered in the framework of the MPCM with the classification of the orbital states according to Young tableaux. It was shown that, on the basis of the M1 and the E1 transitions from different states of the p 15 N scattering to the ground state of 16 O in the p 15 N channel, it is quite succeed to explain general behavior of the S-factor in the considered energy range in the presence of two resonances.PACS Number(s): 21.60. Gx, 25.20.Lj, 25.40.Lw, 26.20.Np, 26.35.+c, 26.50.+x, 26.90.+n, 98.80.Ft The measurements of the reaction rate for 11 В(р,) process at low energies, generally, are focused in the narrow resonance range at Е р = 163 keV with small width. Study of this resonance with the help of the 11 В(р, 0+1 ) reaction 8 allows one to obtain width of  = 6.7 keV and cross section of   = 125 μb in the resonance range, which differ from the assumed values 9 ( = 5.3 keV and   = 158 μb) more than by 20%. The values  = 5.4 keV and   = 130 μb were obtained relatively recently in Ref. 10, and was drawn the conclusion that this resonance plays the key role in the determination of the reaction rate for the 11 В(р,) process at low and astrophysical energies. Therefore, this reaction can play the certain role in different thermonuclear processes in the Universe at synthesis of 12 C.Recently, for example in Ref. 11, it was supposed that baryon number fluctuations in the early Universe lead to the formation of high-density proton-rich and low-density neutron-rich regions. This might be the result of the nucleosynthesis of elements with mass A  12 in the neutron-rich regions of the early Universe. 12,13 The special interest is the nucleus 14 C, 14 which is produced by successive neutron capture 1,2,3,4,5 … 12 C(n,γ) 13 C(n,γ) 14 C … .(3)The nucleus 14...

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Radiative Capture of a Proton on 10B at Astrophysical Energies

Dubovichenko

2015

Russ Phys J

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The possibility of description of the experimental data for the astrophysical Sfactor of the radiative proton capture on 15 N at the energies from 50 to 1500 keV was considered in the framework of the modified potential cluster model with the classification of the orbital states according to Young tableaux. It was shown that, on the basis of the M1 and the E1 transitions from different states of the p 15 N scattering to the ground state of 16 O in the p 15 N channel, it is quite succeed to explain general behavior of the S-factor in the considered energy range in the presence of two resonances.

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Erratum: Constraining theSfactor ofN15(p

Cited by 22 publications

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R-matrix analysis of16O compound nucleus reactions

R-matrix analysis of16O compound nucleus reactions

Radiative n 10B Capture at Thermal and Astrophysical Energies

Radiative Capture of a Proton on 10B at Astrophysical Energies

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