New measurement of the Ec.m.=323 keV resonance in the 19F(p, γ) 20Ne reaction

被引：5
|
作者：
Williams, M. [1 ,2 ]
Adsley, P. [3 ,4 ]
Davids, B. [2 ,5 ]
Greife, U. [6 ]
Hutcheon, D. [2 ]
Karpesky, J. [6 ]
Lennarz, A. [2 ]
Lovely, M. [6 ]
Ruiz, C. [2 ]
机构：
[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
[2] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
[3] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa
[4] iThemba Lab Accelerator Based Sci, ZA-7129 Somerset West, South Africa
[5] Simon Fraser Univ, Dept Phys, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada
[6] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA
来源：
PHYSICAL REVIEW C | 2021年 / 103卷 / 05期
基金：
英国科学技术设施理事会; 加拿大自然科学与工程研究理事会;
关键词：
DESIGN;
D O I：
10.1103/PhysRevC.103.055805
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
At temperatures below 0.1 GK, the F-19(p, gamma) Ne-20 reaction is the only breakout path out of the CNO cycle. Experimental studies of this reaction are challenging from a technical perspective due to copious gamma-ray background from the far stronger F-19(p, alpha) O-16 reaction channel. Here, we present the first inverse kinematics study of the F-19(p, gamma) Ne-20 reaction, in which we measure the strength of the 323-keV resonance. We find a strength value of omega gamma = 3.3(-0.9)(+1.1) meV, which is a factor of two larger than the most recent previous study. The discrepancy is likely the result of a direct to ground state transition which previous studies were not sensitive to. We also observe the transition to the first 2(-) state, which has not been observed for this resonance in previous studies. A new thermonuclear reaction rate is calculated and compared with the literature.
引用
收藏
页数：8
相关论文
共 50 条
  • [31] Calculation of Two Channels Branch Ratio of19F（p,α）16O and 19F（p,γ）20Ne under Extreme High Temperature
    叶子飘
    戴长江
    湖南大学学报(自然科学版), 2004, (03) : 105 - 107
  • [32] First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance
    Pizzone, R. G.
    D'Agata, G.
    La Cognata, M.
    Indelicato, I.
    Spitaleri, C.
    Blagus, S.
    Cherubini, S.
    Figuera, P.
    Grassi, L.
    Guardo, G. L.
    Gulino, M.
    Hayakawa, S.
    Kshetri, R.
    Lamia, L.
    Lattuada, M.
    Mijatovic, T.
    Milin, M.
    Miljanic, D. D.
    Prepolec, L.
    Rapisarda, G. G.
    Romano, S.
    Sergi, M. L.
    Skukan, N.
    Soic, N.
    Tokic, V.
    Tumino, A.
    Uroic, M.
    ASTROPHYSICAL JOURNAL, 2017, 836 (01):
  • [33] Strength of the 18F(p,α)15O resonance at Ec.m.=330 keV -: art. no. 262501
    Bardayan, DW
    Batchelder, JC
    Blackmon, JC
    Champagne, AE
    Davinson, T
    Fitzgerald, R
    Hix, WR
    Iliadis, C
    Kozub, RL
    Ma, Z
    Parete-Koon, S
    Parker, PD
    Shu, N
    Smith, MS
    Woods, PJ
    PHYSICAL REVIEW LETTERS, 2002, 89 (26) : 1 - 262501
  • [34] INTERFERING RESONANCES IN 19F(ALPHA P)22NE REACTION
    KUPERUS, J
    PHYSICA, 1965, 31 (11): : 1603 - &
  • [35] 19F(D,N)20 NE REACTION FROM 2.5 TO 6.5 MEV
    BARROWS, AW
    GABBARD, F
    WEIL, JL
    PHYSICAL REVIEW, 1967, 161 (04): : 928 - &
  • [36] AGB Nucleosynthesis: the 19F(α,p)22Ne reaction at astrophysical energies
    D'Agata, G.
    Pizzone, R. G.
    Spitaleri, C.
    Blagus, S.
    Figuera, P.
    Grassi, L.
    Guardo, G. L.
    Gulino, M.
    Hayakawa, S.
    Indelicato, I.
    Kshetri, R.
    La Cognata, M.
    Lamia, L.
    Lattuada, M.
    Mijatovic, T.
    Milin, M.
    Miljanic, D.
    Prepolec, L.
    Sergi, M. L.
    Skukan, N.
    Soic, N.
    Tokic, V
    Tumino, A.
    Uroic, M.
    EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (VI): PHYSICS WITH SMALL ACCELERATORS, 2017, 1852
  • [37] 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):
  • [38] Destruction of 18F via 18F(p,α)15O burning through the Ec.m.=665 keV resonance -: art. no. 065802
    Bardayan, DW
    Blackmon, JC
    Bradfield-Smith, W
    Brune, CR
    Chamagne, AE
    Davinson, T
    Johnson, BA
    Kozub, RL
    Lee, CS
    Lewis, R
    Parker, PD
    Shotter, AC
    Smith, MS
    Visser, DW
    Woods, PJ
    PHYSICAL REVIEW C, 2001, 63 (06):
  • [39] Electron screening in the 2H(19F,p)20F reaction
    Cvetinovic, A.
    Deordic, D.
    Guardo, G. L.
    Kelemen, M.
    La Cognata, M.
    Lamia, L.
    Markelj, S.
    Pizzone, R. G.
    Schwarz-Selinger, T.
    Tisma, I.
    Vencelj, M.
    Vesic, J.
    Lipoglavsek, M.
    28TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, INPC 2022, 2023, 2586
  • [40] F-19(D, P) F-20 REACTION AT ED = 600 KEV
    SCHLENK, B
    ZIMANYI, J
    ACTA PHYSICA ACADEMIAE SCIENTIARUM HUNGARICAE, 1970, 28 (1-3): : 5 - &
12345