Neutron capture cross section measurement of 151Sm at the CERN neutron time of flight facility (n_TOF) -: art. no. 161103

被引：66

作者：

Abbondanno, U

Aerts, G

Alvarez-Velarde, F

Alvarez-Pol, H

Andriamonje, S

Andrzejewski, J

Badurek, G

Baumann, P

Becvár, F

Benlliure, J

Berthoumieux, E

Calviño, F

Cano-Ott, D

Capote, R

Cennini, P

Chepel, V

Chiaveri, E

Colonna, N

Cortes, G

Cortina, D

Couture, A

Cox, J

Dababneh, S

Dahlfors, M

David, S

Dolfini, R

Domingo-Pardo, C

Duran, I

Embid-Segura, M

Ferrant, L

Ferrari, A

Ferreira-Marques, R

Frais-Koelbl, H

Furman, W

Goncalves, I

Gallino, R

Gonzalez-Romero, E

Goverdovski, A

Gramegna, F

Griesmayer, E

Gunsing, F

Haas, B

Haight, R

Heil, M

Herrera-Martinez, A

Isaev, S

Jericha, E

Käppeler, F

Kadi, Y

Karadimos, D

机构：

[1] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany

[2] Vienna Univ Technol, Atominst Osterreich Univ, A-1060 Vienna, Austria

[3] Univ Vienna, Inst Isotopenforsch & Kernphys, A-1010 Vienna, Austria

[4] Fachhsch Wiener Neustadt, Wiener Neustadt, Austria

[5] CERN, Geneva, Switzerland

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

[7] CNRS, IN2P3, IReS, Strasbourg, France

[8] CEA Saclay, DSM, F-91191 Gif Sur Yvette, France

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

[10] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece

[11] ENEA, Bologna, Italy

[12] Lab Nazl Legnaro, I-35020 Legnaro, Italy

[13] Ist Nazl Fis Nucl, I-70126 Bari, Italy

[14] Ist Nazl Fis Nucl, Trieste, Italy

[15] Univ Pavia, I-27100 Pavia, Italy

[16] CEC JRC IRMM, Geel, Belgium

[17] Univ Coimbra, Dept Fis, Coimbra, Portugal

[18] Univ Coimbra, LIP Coimbra, Coimbra, Portugal

[19] Joint Nucl Res Inst, Frank Lab Neutron Phys, Dubna, Russia

[20] Inst Phys & Power Engn, Obninsk, Russia

[21] Ctr Invest Energet Medioambientales & Technol, Madrid, Spain

[22] Univ Valencia, CSIC, Valencia, Spain

[23] Univ Politecn Madrid, Madrid, Spain

[24] Univ Seville, Seville, Spain

[25] Univ Santiago de Compostela, Santiago De Compostela, Spain

[26] Univ Politecn Cataluna, Barcelona, Spain

[27] Univ Basel, Dept Phys & Astron, Basel, Switzerland

[28] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[29] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[30] Univ Notre Dame, Notre Dame, IN 46556 USA

[31] Inst Tecnol & Nucl, Lisbon, Portugal

[32] Charles Univ Prague, Prague, Czech Republic

[33] CNRS, IN2P3, CENBG, Bordeaux, France

[34] Univ Lodz, PL-90131 Lodz, Poland

[35] Pole Univ Leonard de Vinci, Paris, France

[36] Univ Bologna, Dipartmento Fis, Bologna, Italy

[37] Sez INFN Bologna, Dipartmento Fis, Bologna, Italy

[38] Ist Nazl Fis Nucl, Trieste, Italy

[39] Univ Turin, Dipartimento Fis Gen, I-10125 Turin, Italy

[40] Sez INFN Torino, I-10125 Turin, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.93.161103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Sm-151(n,gamma)Sm-152 cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The Sm-151 cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.

引用

页码：161103 / 1

页数：5

共 19 条

[1] New experimental validation of the pulse height weighting technique for capture cross-section measurements [J].

Abbondanno, U ;

Aerts, G ;

Alvarez, H ;

Andriamonje, S ;

Angelopoulos, A ;

Assimakopoulos, P ;

Bacri, CO ;

Badurek, G ;

Baumann, P ;

Becvar, F ;

Beer, H ;

Benlliure, J ;

Berthier, B ;

Berthomieux, E ;

Boffi, S ;

Borcea, C ;

Boscolo-Marchi, E ;

Bustreo, N ;

Calviño, P ;

Cano-Ott, D ;

Capote, R ;

Carlson, P ;

Cennini, P ;

Chepel, V ;

Chiaveri, E ;

Coceva, C ;

Colonna, N ;

Cortes, G ;

Cortina, D ;

Couture, A ;

Cox, J ;

Dababneh, S ;

Dahlfors, M ;

David, S ;

Dolfini, R ;

Domingo-Pardo, C ;

Duran, I ;

Eleftheriadis, C ;

Embid-Segura, M ;

Ferrant, L ;

Ferrari, A ;

Ferreira-Lourenco, L ;

Ferreira-Marques, R ;

Frais-Koelbl, H ;

Furman, WI ;

Giomataris, Y ;

Goncalves, IF ;

Gonzalez-Romero, E ;

Goverdovski, A ;

Gramegna, F .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 521 (2-3) :454-467

[2]

Abbondanno U., 2003, Tech. Rep. CERN-SL-2002-053 ECT

[3] ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].

ANDERS, E ;

GREVESSE, N .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (01) :197-214

[4] Neutron cross sections for nucleosynthesis studies [J].

Bao, ZY ;

Beer, H ;

Käppeler, F ;

Voss, F ;

Wisshak, K ;

Rauscher, T .

ATOMIC DATA AND NUCLEAR DATA TABLES, 2000, 76 (01) :70-154

[5] s-process branchings at 151Sm, 154Eu, and 163Dy -: art. no. 015801 [J].

Best, J ;

Stoll, H ;

Arlandini, C ;

Jaag, S ;

Käppeler, F ;

Wisshak, K ;

Mengoni, A ;

Reffo, G ;

Rauscher, T .

PHYSICAL REVIEW C, 2001, 64 (01) :158011-1580115

[6] Results from the commissioning of the n_TOF spallation neutron source at CERN [J].

Borcea, C ;

Cennini, P ;

Dahlfors, M ;

Ferrari, A ;

Garcia-Muñoz, G ;

Haefner, P ;

Herrera-Martínez, A ;

Kadi, Y ;

Lacoste, V ;

Radermacher, E ;

Saldaña, F ;

Vlachoudis, V ;

Zanini, L ;

Rubbia, C ;

Buono, S ;

Dangendorf, V ;

Nolte, R ;

Weierganz, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 513 (03) :524-537

[7] Empirical realization of a critical point description in atomic nuclei [J].

Casten, RF ;

Zamfir, NV .

PHYSICAL REVIEW LETTERS, 2001, 87 (05) :52503-1

[8] Lifetime measurement in 176Lu and its astrophysical consequences [J].

Doll, C ;

Börner, HG ;

Jaag, S ;

Käppeler, F ;

Andrejtscheff, W .

PHYSICAL REVIEW C, 1999, 59 (01) :492-499

[9] Evolution and nucleosynthesis in low-mass asymptotic giant branch stars. II. Neutron capture and the s-process [J].

Gallino, R ;

Arlandini, C ;

Busso, M ;

Lugaro, M ;

Travaglio, C ;

Straniero, O ;

Chieffi, A ;

Limongi, M .

ASTROPHYSICAL JOURNAL, 1998, 497 (01) :388-403

[10] TOTAL NEUTRON CROSS-SECTION FOR SM-151 AND NUCLEAR SYSTEMATICS OF SM ISOTOPES [J].

KIROUAC, GJ ;

EILAND, HM .

PHYSICAL REVIEW C, 1975, 11 (03) :895-905

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