First Accurate Normalization of the β-delayed α Decay of 16N and Implications for the 12C(α,γ)16O Astrophysical Reaction Rate

被引：7

作者：

Kirsebom, O. S. ^{[1
]}

Tengblad, O. ^{[2
]}

Lica, R. ^{[3
,4
]}

Munch, M. ^{[1
]}

Riisager, K. ^{[1
]}

Fynbo, H. O. U. ^{[1
]}

Borge, M. J. G. ^{[2
,3
]}

Madurga, M. ^{[3
]}

Marroquin, I. ^{[2
]}

Andreyev, A. N. ^{[5
,18
]}

Berry, T. A. ^{[6
]}

Christensen, E. R. ^{[1
]}

Fernandez, P. Diaz ^{[7
]}

Doherty, D. T. ^{[5
]}

Van Duppen, P. ^{[8
]}

Fraile, L. M. ^{[9
]}

Gallardo, M. C. ^{[9
]}

Greenlees, P. T. ^{[10
,11
]}

Harkness-Brennan, L. J. ^{[12
]}

Hubbard, N. ^{[1
,5
]}

Huyse, M. ^{[8
]}

Jensen, J. H. ^{[1
]}

Johansson, H. ^{[7
]}

Jonson, B. ^{[7
]}

Judson, D. S. ^{[12
]}

Konki, J. ^{[3
,10
,11
]}

Lazarus, I. ^{[13
]}

Lund, M. V. ^{[1
]}

Marginean, N. ^{[4
]}

Marginean, R. ^{[4
]}

Perea, A. ^{[2
]}

Mihai, C. ^{[4
]}

Negret, A. ^{[4
]}

Page, R. D. ^{[12
]}

Pucknell, V. ^{[13
]}

Rahkila, P. ^{[10
,11
]}

Sorlin, O. ^{[3
,14
]}

Sotty, C. ^{[4
]}

Swartz, J. A. ^{[1
]}

Sorensen, H. B. ^{[1
]}

Toernqvist, H. ^{[15
,16
]}

Vedia, V. ^{[9
]}

Warr, N. ^{[17
]}

De Witte, H. ^{[8
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[2] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain

[3] CERN, CH-1211 Geneva 23, Switzerland

[4] Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, RO-077125 Bucharest, Romania

[5] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[6] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

[7] Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden

[8] Katholieke Univ Leuven, Inst Kern Stralingsfys, B-3001 Heverlee, Belgium

[9] Univ Complutense Madrid, Grp Fis Nucl, E-28040 Madrid, Spain

[10] Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland

[11] Univ Helsinki, Helsinki Inst Phys, POB 64, FI-00014 Helsinki, Finland

[12] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England

[13] STFC Daresbury, Warrington WA4 4AD, Cheshire, England

[14] CNRS, IN2P3, CEA, DSM,GANIL, F-14076 Caen, France

[15] Tech Univ Darmstadt, Inst Kernphys, Darmstadt, Germany

[16] GSI Helmholtzzentrum Schwerionenforsch, Darmstadt, Germany

[17] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany

[18] JAEA, ASRC, Ibaraki 3191195, Japan

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 14期

基金：

欧洲研究理事会; 英国科学技术设施理事会; 欧盟地平线“2020”;

关键词：

CROSS-SECTION; ENERGY-LEVELS; LIGHT-NUCLEI; MATRIX; LEVEL; STATE;

D O I：

10.1103/PhysRevLett.121.142701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The C-12(alpha,gamma)O-16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced a width, gamma(11), of the bound 1(-) level in O-16 is particularly important to determine the cross section. The magnitude of gamma(11) is determined via sub-Coulomb a-transfer reactions or the beta-delayed a decay of N-16, but the latter approach is presently hampered by the lack of sufficiently precise data on the beta-decay branching ratios. Here we report improved branching ratios for the bound 1(-) level [b(beta,11) = (5.02 +/- 0.10) x 10(-2)] and for beta-delayed alpha emission [b(beta alpha) = (1.59 +/- 0.06) x 10(-5)]. Our value for b(beta alpha) is 33% larger than previously held, leading to a substantial increase in gamma(11). Our revised value for gamma(11) is in good agreement with the value obtained in a-transfer studies and the weighted average of the two gives a robust and precise determination of gamma(11), which provides significantly improved constraints on the C-12(alpha,gamma) cross section in the energy range relevant to hydrostatic He burning.

引用

页数：6

共 50 条

[1] Impact of 16O(γ, α)12C measurements on the 12C(α, γ)16O astrophysical reaction rate
Holt, R. J.
Filippone, B. W.
Pieper, Steven C.
PHYSICAL REVIEW C, 2019, 99 (05)
[2] Impact of 16O(e, e′ α)12C measurements on the 12C(α, γ)16O astrophysical reaction rate
Holt, R. J.
Filippone, B. W.
PHYSICAL REVIEW C, 2019, 100 (06)
[3] A New Approach to Determine the 12C(α, γ)16O Reaction Rate at Astrophysical Energies
Friscic, Ivica
Donnelly, T. William
Milner, Richard G.
27TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE (INPC2019), 2020, 1643
[4] MEASUREMENTS OF THE ASTROPHYSICAL S FACTOR OF 12C (α,γ)16O REACTION
Tsentalovich, E.
WORKSHOP TO EXPLORE PHYSICS OPPORTUNITIES WITH INTENSE, POLARIZED ELECTRON BEAMS AT 50-300 MEV, 2013, 1563 : 235 - 238
[5] New determination of 12C(α, γ)16O reaction rate
Oulebsir, N.
INTERNATIONAL JOURNAL OF MODERN PHYSICS E, 2015, 24 (12):
[6] The astrophysical S factor of 12C(α, γ)16O at stellar energy
Schuermann, D.
Gialanella, L.
Kunz, R.
Strieder, F.
PHYSICS LETTERS B, 2012, 711 (01) : 35 - 40
[7] Indirect study of the 12C(α,γ)16O reaction via the 12C(7Li, t)16O transfer reaction
Oulebsir, N.
Hammache, F.
Roussel, P.
Pellegriti, M. G.
Audouin, L.
Beaumel, D.
Bouda, A.
Descouvemont, P.
Fortier, S.
Gaudefroy, L.
Kiener, J.
Lefebvre-Schuhl, A.
Tatischeff, V.
PHYSICAL REVIEW C, 2012, 85 (03):
[8] Astrophysical S-factor of the 12C(α, γ) 16O reaction at solar energies
Sadeghi, H.
Ghasemi, R.
Khalili, H.
CHINESE PHYSICS C, 2014, 38 (08)
[9] Astrophysical SE2 factor of the 12C (α, γ)16O reaction through the 12C(11B, 7Li)16O transfer reaction
Shen, Y. P.
Guo, B.
Li, Z. H.
Li, Y. J.
Pang, D. Y.
Adhikari, S.
An, Z. D.
Su, J.
Yan, S. Q.
Du, X. C.
Fan, Q. W.
Gan, L.
Han, Z. Y.
Li, D. H.
Li, E. T.
Li, X. Y.
Lian, G.
Liu, J. C.
Ma, T. L.
Pei, C. J.
Su, Y.
Wang, Y. B.
Zeng, S.
Zhou, Y.
Liu, W. P.
PHYSICAL REVIEW C, 2019, 99 (02)
[10] The 12C(α,γ)16O reaction, in the laboratory and in the stars
de Boer, R. J.
Best, A.
Brune, C. R.
Chieffi, A.
Hebborn, C.
Imbriani, G.
Liu, W. P.
Shen, Y. P.
Timmes, F. X.
Wiescher, M.
EUROPEAN PHYSICAL JOURNAL A, 2025, 61 (04)

← 1 2 3 4 5 →