Low energy measurement of the 14N(p, γ)15O total cross section at the LUNA underground facility

被引：68

作者：

Bemmerer, D.

Confortola, F.

Lemut, A.

Bonetti, R.

Broggini, C.

Corvisiero, P.

Costantini, H.

Cruz, J.

Formicola, A.

Fueloepf, Zs.

Gervino, G.

Guglielmetti, A.

Gustavino, C.

Gyurky, Gy

Imbriani, G.

Jesus, A.

Junker, M.

Limata, B.

Menegazzo, R.

Prati, P.

Roca, V.

Rolfs, C.

Rogalla, D.

Romano, M.

Rossi-Alvarez, C.

Schuemann, F.

Somorjai, E.

Straniero, O.

Strieder, F.

Terrasi, F.

Trautvetter, H. P.

机构：

[1] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy

[2] Univ Genoa, Genoa, Italy

[3] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[4] Univ Milan, Milan, Italy

[5] Ist Nazl Fis Nucl, Ist Fis Gen Applicata, Milan, Italy

[6] Univ Lisbon, Ctr Fis Nucl, Lisbon, Portugal

[7] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Laquila, Italy

[8] ATOMKI, Debrecen, Hungary

[9] Univ Turin, Turin, Italy

[10] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[11] Univ Naples Federico II, Naples, Italy

[12] Ist Nazl Fis Nucl, Naples, Italy

[13] Ruhr Univ Bochum, Inst Expt Phys 3, D-4630 Bochum, Germany

[14] Osservatorio Astron Collurania, INAF, Teramo, Italy

[15] Ist Nazl Fis Nucl, I-80125 Naples, Italy

[16] Univ Naples 2, Naples, Italy

来源：

NUCLEAR PHYSICS A | 2006年 / 779卷

关键词：

N-14(p; gamma)O-15; CNO cycle; direct measurement; underground accelerator;

D O I：

10.1016/j.nuclphysa.2006.09.001

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：

Deep underground in Gran Sasso National Laboratory (Italy), at the LUNA facility, the cross section of the N-14(p, gamma) O-15, the slowest process of the CNO cycle, has been measured at energies much lower than achieved before. Using a 400 kV accelerator, a windowless gas target and a 4 pi BGO summing detector, direct cross section data has been obtained down to 70 keV, reaching a value of 0.24 picobarn, corresponding to an S-factor of 1.74 +/- 0.14(stat) +/- 0.14(syst) keV barn. The Gamow peak has been covered by direct experimental data for several scenarios of stable and explosive hydrogen burning. The wy strength of the 259 keV resonance has been re-measured obtaining 12.8 +/- 0.3(stat) +/- 0.4(syst) meV. The stellar reaction rate has been calculated for temperatures 0.09 x 10(9) - 0.3 x 10(9) K. A complete description of the experiment is here presented, including the impact of the present data on nucleosynthesis in AGB stars. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：297 / 317

页数：21

共 50 条

[1] Solar fusion cross sections [J].

Adelberger, EG ;

Austin, SM ;

Bahcall, JN ;

Balantekin, AB ;

Bogaert, G ;

Brown, LS ;

Buchmann, L ;

Cecil, FE ;

Champagne, AE ;

de Braeckeleer, L ;

Duba, CA ;

Elliott, SR ;

Freedman, SJ ;

Gai, M ;

Goldring, G ;

Gould, CR ;

Gruzinov, A ;

Haxton, WC ;

Heeger, KM ;

Henley, E ;

Johnson, CW ;

Kamionkowski, M ;

Kavanagh, RW ;

Koonin, SE ;

Kubodera, K ;

Langanke, K ;

Motobayashi, T ;

Pandharipande, V ;

Parker, P ;

Robertson, RGH ;

Rolfs, C ;

Sawyer, RF ;

Shaviv, N ;

Shoppa, TD ;

Snover, KA ;

Swanson, E ;

Tribble, RE ;

Turck-Chieze, S ;

Wilkerson, JF .

REVIEWS OF MODERN PHYSICS, 1998, 70 (04) :1265-1291

[2] STUDY OF PENETRATING COSMIC-RAY MUONS AND SEARCH FOR LARGE-SCALE ANISOTROPIES AT THE GRAN-SASSO-LABORATORY [J].

AHLEN, SP .

PHYSICS LETTERS B, 1990, 249 (01) :149-156

[3] ENERGY-LEVELS OF LIGHT-NUCLEI A=13-15 [J].

AJZENBERGSELOVE, F .

NUCLEAR PHYSICS A, 1991, 523 (01) :1-196

[4] EXPERIMENTAL RESULTS ON CHARGE-CHANGING COLLISIONS OF HYDROGEN AND HELIUM ATOMS AND IONS AT KINETIC ENERGIES ABOVE 0.2 KEV [J].

ALLISON, SK .

REVIEWS OF MODERN PHYSICS, 1958, 30 (04) :1137-1168

[5]

ANDERSEN HH, 1977, STOPPING POWERS RANG

[6] A compilation of charged-particle induced thermonuclear reaction rates [J].

Angulo, C ;

Arnould, M ;

Rayet, M ;

Descouvemont, P ;

Baye, D ;

Leclercq-Willain, C ;

Coc, A ;

Barhoumi, S ;

Aguer, P ;

Rolfs, C ;

Kunz, R ;

Hammer, JW ;

Mayer, A ;

Paradellis, T ;

Kossionides, S ;

Chronidou, C ;

Spyrou, K ;

Degl'Innocenti, S ;

Fiorentini, G ;

Ricci, B ;

Zavatarelli, S ;

Providencia, C ;

Wolters, H ;

Soares, J ;

Grama, C ;

Rahighi, J ;

Shotter, A ;

Rachti, ML .

NUCLEAR PHYSICS A, 1999, 656 (01) :3-183

[7] The 14N(p,γ)15O low-energy S-factor [J].

Angulo, C ;

Descouvemont, P .

NUCLEAR PHYSICS A, 2001, 690 (04) :755-768

[8] A MONTE-CARLO CODE FOR NUCLEAR ASTROPHYSICS EXPERIMENTS [J].

ARPESELLA, C ;

BELLOTTI, E ;

BROGGINI, C ;

CORVISIERO, P ;

FUBINI, S ;

GERVINO, G ;

GREIFE, U ;

GUSTAVINO, C ;

JUNKER, M ;

LANZA, A ;

PRATI, P ;

ROLFS, C ;

ZAHNOW, D ;

ZAVATARELLI, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1995, 360 (03) :607-615

[9] EFFECTS OF ELECTRON SCREENING ON LOW-ENERGY FUSION CROSS-SECTIONS [J].

ASSENBAUM, HJ ;

LANGANKE, K ;

ROLFS, C .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1987, 327 (04) :461-468

[10] What do we (not) know theoretically about solar neutrino fluxes? [J].

Bahcall, JN ;

Pinsonneault, MH .

PHYSICAL REVIEW LETTERS, 2004, 92 (12) :121301-1

← 1 2 3 4 5 →