7Be(n,α)4He Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN

被引：86

作者：

Barbagallo, M. ^{[1
]}

Musumarra, A. ^{[2
,3
]}

Cosentino, L. ^{[3
]}

Maugeri, E. ^{[4
]}

Heinitz, S. ^{[4
]}

Mengoni, A. ^{[5
]}

Dressler, R. ^{[4
]}

Schumann, D. ^{[4
]}

Kaeppeler, F. ^{[6
]}

Colonna, N. ^{[1
]}

Finocchiaro, P. ^{[3
]}

Ayranov, M. ^{[7
]}

Damone, L. ^{[1
]}

Kivel, N. ^{[4
]}

Aberle, O. ^{[8
]}

Altstadt, S. ^{[9
]}

Andrzejewski, J. ^{[10
]}

Audouin, L. ^{[11
]}

Bacak, M. ^{[12
]}

Balibrea-Correa, J. ^{[13
]}

Barros, S. ^{[14
]}

Becares, V. ^{[13
]}

Becvar, F. ^{[15
]}

Beinrucker, C. ^{[9
]}

Berthoumieux, E. ^{[16
]}

Billowes, J. ^{[17
]}

Bosnar, D. ^{[18
]}

Brugger, M. ^{[8
]}

Caamano, M. ^{[19
]}

Calviani, M. ^{[8
]}

Calvino, F. ^{[20
]}

Cano-Ott, D. ^{[13
]}

Cardella, R. ^{[3
,8
]}

Casanovas, A. ^{[20
]}

Castelluccio, D. M. ^{[5
]}

Cerutti, F. ^{[8
]}

Chen, Y. H. ^{[11
]}

Chiaveri, E. ^{[8
]}

Cortes, G. ^{[20
]}

Cortes-Giraldo, M. A. ^{[21
]}

Cristallo, S. ^{[22
]}

Diakaki, M. ^{[23
]}

Domingo-Pardo, C. ^{[24
]}

Dupont, E. ^{[16
]}

Duran, I. ^{[19
]}

Fernandez-Dominguez, B. ^{[19
]}

Ferrari, A. ^{[8
]}

Ferreira, P. ^{[14
]}

Furman, W. ^{[25
]}

Ganesan, S. ^{[26
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Bari, Bari, Italy

[2] Univ Catania, DFA, I-95124 Catania, Italy

[3] Ist Nazl Fis Nucl, Lab Nazl Sud, Catania, Italy

[4] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[5] ENEA, Bologna, Italy

[6] Karlsruhe Inst Technol, Inst Kernphys, Karlsruhe, Germany

[7] European Commiss, DG Energy, Luxembourg, Luxembourg

[8] CERN, Geneva, Switzerland

[9] Goethe Univ Frankfurt, Frankfurt, Germany

[10] Uniwersytet Lodzki, Lodz, Poland

[11] IPN, CNRS, IN2P3, Orsay, France

[12] Vienna Univ Technol, Atominst Osterreich Univ, Vienna, Austria

[13] Ctr Invest Energet Medioambient & Tecnol CIEMAT, Madrid, Spain

[14] Univ Lisbon, Inst Super Tecn, C2TN, P-1699 Lisbon, Portugal

[15] Charles Univ Prague, Prague, Czech Republic

[16] CEA Saclay, IRFU, Gif Sur Yvette, France

[17] Univ Manchester, Oxford Rd, Manchester, Lancs, England

[18] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 41000, Croatia

[19] Univ Santiago de Compostela, La Coruna, Spain

[20] Univ Politecn Cataluna, Barcelona, Spain

[21] Univ Seville, Seville, Spain

[22] INAF Osservatorio Astron Collurania, Teramo, Italy

[23] Natl Tech Univ Athens, GR-10682 Athens, Greece

[24] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46003 Valencia, Spain

[25] Joint Inst Nucl Res, Dubna, Russia

[26] Bhabha Atom Res Ctr, Bombay, Maharashtra, India

[27] Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, Bucharest, Romania

[28] Japan Atom Energy Agcy, Tokai, Ibaraki, Japan

[29] European Commiss JRC, Inst Reference Mat & Measurements, Retieseweg 111, B-2440 Geel, Belgium

[30] Univ York, York, N Yorkshire, England

[31] Tokyo Inst Technol, Tokyo, Japan

[32] Univ Edinburgh, Sch Phys & Astron, Edinburgh EH8 9YL, Midlothian, Scotland

[33] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[34] Univ Bologna, Dipartimento Fis & Astron, I-40126 Bologna, Italy

[35] Ist Nazl Fis Nucl, Lab Nazl Legnaro, Legnaro, Italy

[36] CNR IC, Bari, Italy

[37] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[38] Phys Tech Bundesanstalt, Braunschweig, Germany

[39] Univ Ioannina, GR-45110 Ioannina, Greece

[40] Univ Vienna, Fac Phys, A-1010 Vienna, Austria

[41] Univ Granada, E-18071 Granada, Spain

[42] Univ Hertfordshire, Sch Phys Astron & Math, Ctr Astrophys Res, Hatfield, Herts, England

[43] Univ Basel, Dept Phys, Basel, Switzerland

[44] Australian Natl Univ, Res Sch Phys & Engn, GPO Box 4, Canberra, ACT 0200, Australia

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

FACILITY; NUCLEI;

D O I：

10.1103/PhysRevLett.117.152701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy-dependent cross section of the (7)Bed(n,alpha)He-4 reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron energy. The challenges posed by the short half-life of Be-7 and by the low reaction cross section have been overcome at n_TOF thanks to an unprecedented combination of the extremely high luminosity and good resolution of the neutron beam in the new experimental area (EAR2) of the n_TOF facility at CERN, the availability of a sufficient amount of chemically pure Be-7, and a specifically designed experimental setup. Coincidences between the two alpha particles have been recorded in two Si-Be-7-Si arrays placed directly in the neutron beam. The present results are consistent, at thermal neutron energy, with the only previous measurement performed in the 1960s at a nuclear reactor. The energy dependence reported here clearly indicates the inadequacy of the cross section estimates currently used in BBN calculations. Although new measurements at higher neutron energy may still be needed, the n_TOF results hint at a minor role of this reaction in BBN, leaving the long-standing cosmological lithium problem unsolved.

引用

页数：7

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David, S.
Dillman, I.
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Dridi, W.
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Embid-Segura, M.
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Guerrero, C.
Gunsing, F.
Haas, B.
Haight, R.
Heil, M.
Herrera-Martinezl, A.
Igashira, M.
Jericha, E.
Kaeppeler, F.
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Vacik, J.
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Goodacre, T. Day
Fedorov, D.
Fedosseev, V.
Johnston, K.
Marsh, B.
Rothe, S.
Schell, J.
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Guerrero, C.
Gunsing, F.
Gurusamy, P.
Heftrich, T.
Heinitz, S.
Hernandez-Prieto, A.
Heyse, J.
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Fernandez-Dominguez, Beatriz
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Furman, Valter
Goebel, Kathrin
Garg, Ruchi
[J]. PHYSICAL REVIEW C, 2023, 107 (06)
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Mingrone, F.
Massimi, C.
Vannini, G.
Altstadt, S.
Andrzejewski, J.
Audouin, L.
Barbagallo, M.
Becares, V.
Becvar, F.
Belloni, F.
Berthoumieux, E.
Billowes, J.
Bosnar, D.
Brugger, M.
Calviani, M.
Calvino, F.
Cano-Ott, D.
Carrapico, C.
Cerutti, F.
Chiaveri, E.
Chin, M.
Colonna, N.
Cortes, G.
Cortes-Giraldo, M. A.
Diakaki, M.
Domingo-Pardo, C.
Duran, I.
Dressler, R.
Eleftheriadis, C.
Ferrari, A.
Fraval, K.
Ganesan, S.
Garcia, A. R.
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Gonzalez-Romero, E.
Griesmayer, E.
Guerrero, C.
Gunsing, F.
Hernandez-Prieto, A.
Jenkins, D. G.
Jericha, E.
Kadi, Y.
Kaeppeler, F.
Karadimos, D.
Kivel, N.
Koehler, P.
Krticka, M.
Kroll, J.
Lampoudis, C.
[J]. INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 1, 2014, 66
[38] REACTION 7BE(N, ALPHA)4HE AND PARITY CONSERVATION IN STRONG INTERACTIONS
BASSI, P
RESTELLI, GB
VENTURINI, G
BERTOLIN.GC
CAPPELLANI, F
FERRETTI, B
MANDL, V
ROTA, A
[J]. NUOVO CIMENTO, 1963, 28 (05): : 1049 - +
[39] Recent THM investigations of the 7Be(n,α)4He reaction in the BBN scenario
Lamia, L.
Pizzone, R. G.
Spitaleri, C.
Bertulani, C.
Hayakawa, S.
Hou, S. Q.
La Cognata, M.
Mazzocco, M.
Rapisarda, G. G.
Romano, S.
Sergi, M. L.
Tumino, A.
[J]. NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS, 2019, 42 (2-3):
[40] REACTION 7BE(N,ALPHA)4HE AND PARITY CONSERVATION IN STRONG INTERACTIONS
BASSI, P
RESTELLI, GB
ROTA, A
FERRETTI, B
VENTURINI, G
CAPPELLANI, F
MANDL, V
BERTOLIN.GC
[J]. NUOVO CIMENTO, 1962, 24 (03): : 560 - +

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