Thermonuclear 19F(p, α)16O Reaction Rate Revised and Astrophysical Implications

被引:4
|
作者
Zhang, L. Y. [1 ,2 ]
Lopez, A. Y. [3 ]
Lugaro, M. [3 ,4 ,5 ]
He, J. J. [1 ,2 ]
Karakas, A. I. [5 ,6 ]
机构
[1] Beijing Normal Univ, Coll Nucl Sci & Technol, Key Lab Beam Technol, Minist Educ, Beijing 100875, Peoples R China
[2] Beijing Radiat Ctr, Beijing 100875, Peoples R China
[3] Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary
[4] Eotvos Lorand Univ, Inst Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary
[5] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia
[6] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Stromlo, Australia
来源
ASTROPHYSICAL JOURNAL | 2021年 / 913卷 / 01期
基金
澳大利亚研究理事会; 中国国家自然科学基金;
关键词
ASYMPTOTIC GIANT BRANCH; RESONANCE STRENGTHS; CROSS-SECTION; ENERGY-LEVELS; LIGHT-NUCLEI; FLUORINE; STARS; F-19(P; ALPHA-GAMMA)O-16; NUCLEOSYNTHESIS; CARBON;
D O I
10.3847/1538-4357/abef63
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have calculated the thermonuclear F-19(p, alpha ( gamma ))O-16 reaction rate in a wide temperature region of 0.001-10 GK by re-evaluating the available experimental data. Together with recently evaluated (19)(p, alpha (0))O-16 and (19)(p, alpha ( pi ))O-16 data, we have derived a new total reaction rate of F-19(p, alpha)O-16 using a Monte Carlo technique. The present rate is larger than the NACRE recommended one by factors of 36.4, 2.3, and 1.7 at temperatures of 0.01, 0.05, and 0.1 GK, respectively. This is because we have considered the enhanced low-energy astrophysical S factors in the (p, alpha ( gamma )) channel, owing to the interference effect between an 11 keV resonance and the well-known 323 keV resonance. It shows that the (p, alpha ( gamma )) channel dominates the total rate over the entire temperature region, except for a narrow region of 0.05-0.12 GK where the (p, alpha (0)) channel dominates, contrary to the previous conclusion. We have investigated the impact of the F-19(p, alpha)O-16 reaction rate using a simple parametric model of extra mixing in low-mass AGB stars, which would lower the fluorine abundance produced and observed in these stars. However, models considering different temperature profiles and more sophisticated approaches, such as extra mixing induced by magnetic fields, are needed to verify the results of our preliminary tests. Interestingly, our new rate has a strong impact on destruction of F-19 in the CNO cycle at low temperatures of 0.02-0.03 GK, and this general behavior needs to be analyzed further.
引用
收藏
页数:13
相关论文
共 50 条
  • [21] Direct measurement of the 19F(p,α)16O reaction using the LHASA detector array
    Petruse, T.
    Guardo, G. L.
    Lattuada, D.
    La Cognata, M.
    Balabanski, D. L.
    Aciksoz, E.
    Acosta, L.
    Capponi, L.
    Carbone, D.
    Cherubini, S.
    Choudhury, D.
    D'Agata, G.
    Pietro, A. Di
    Figuera, P.
    Gulino, M.
    Kilik, A. I.
    La Commara, M.
    Lamia, L.
    Matei, C.
    Palmerini, S.
    Pizzone, R. G.
    Romano, S.
    Soderstroem, P. -a.
    Sparta, R.
    Tumino, A.
    Vinals, S.
    EUROPEAN PHYSICAL JOURNAL A, 2025, 61 (01):
  • [22] Investigation of correlation characteristics of 19F(p, αγ)16O reaction at Ep=7.5 MeV
    Ignatenko, AV
    Lebedev, VA
    Orlova, NV
    Spassky, AV
    Serikov, OI
    IZVESTIYA AKADEMII NAUK SERIYA FIZICHESKAYA, 2002, 66 (10): : 1507 - 1513
  • [23] Properties of fluorine targets and their application on the astrophysically important 19F(p, α)16O reaction
    Zhang, Liyong
    Xu, Shiwei
    He, Jianjun
    Wang, Shuo
    Chen, Han
    Hu, Jun
    Ma, Shaobo
    Zhang, Ningtao
    Hou, Suqing
    Liu, Weiping
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2019, 438 : 48 - 53
  • [24] An optimized 19F (p, αγ)16O elemental mapping facility
    Vajandar, S. K.
    Ren, M. Q.
    Zheng, D.
    Hsu, C-Y. S.
    Osipowicz, T.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2019, 461 : 50 - 54
  • [25] Study of the 16O(p,γ) reaction at astrophysical energies
    Barbieri, C
    Jennings, BK
    NUCLEAR PHYSICS A, 2005, 758 : 395C - 398C
  • [26] Astrophysical reaction rate of 12C(α, γ)16O
    Kunz, R
    Fey, M
    Jaeger, M
    Mayer, A
    Hammer, JW
    Staudt, G
    Harissopulos, S
    Paradellis, T
    ASTROPHYSICAL JOURNAL, 2002, 567 (01): : 643 - 650
  • [27] Thermonuclear rate for the 19F(α, p)22Ne reaction at stellar temperatures
    Ugalde, C.
    Azuma, R. E.
    Couture, A.
    Gorres, J.
    Lee, H. Y.
    Stech, E.
    Strandberg, E.
    Tan, W.
    Wiescher, M.
    PHYSICAL REVIEW C, 2008, 77 (03):
  • [28] MICROANALYSIS OF FLUORINE IN ZIRCALOY BY USE OF 19F(RHO ALPHAGAMMA)16O REACTION
    MOLLER, E
    STARFELT, N
    NUCLEAR INSTRUMENTS & METHODS, 1967, 50 (02): : 225 - &
  • [29] 19F(3HE,6LI)16O REACTION
    MEAD, RO
    YOUNG, FC
    NUCLEAR PHYSICS A, 1968, A115 (01) : 161 - &
  • [30] Study on γ-ray source from the resonant reaction 19F(p,αγ)16O at Ep=340 keV
    刘伏龙
    杨婉莎
    魏继红
    吴笛
    何阳帆
    李雨尘
    马田丽
    谌阳平
    樊启文
    贺创业
    郭冰
    王乃彦
    Chinese Physics B, 2020, (07) : 318 - 323