Uncertainties of nucleo-chronometers from nuclear physics inputs

Zhang Wei-Hong; Niu Zhong-Ming; Wang Feng; Gong Xiao-Bo; Sun Bao-Hua

doi:10.7498/aps.61.112601

Abstract

The influences of uncertainties in nuclear physics inputs on the Th/U, Th/Hf, Th/Eu, Th/Os, Th/Ir nucleo-chronometers are investigated in the framework of the classical r-process approach. A Monte-Carlo method is used to evaluate the age uncertainty originating from neutron separation energies for each nuclear mass model. It is found that the deduced age uncertainty for Th /U can be up to 1.66 Ga, and for the three chronometers, Th/Eu, Th/Os, Th/Ir, the uncertainties are 5.15 Ga, 3.93 Ga and 3.95 Ga, respectively. The recently proposed chronometer, Th/Hf, shows a clear model dependence, while Th/Os and Th/Ir chronometers tend to overestimate the age of Universe. Taking into account the uncertainties in nuclear physics inputs and observations, an up-to-date age estimation for the universe with the Th/U chronometer is 14.1? 3.8 Ga.

Keywords:

Authors and contacts

1.
State Key Laboratory of Software Development Environment, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China;
2.
Department of Physics, Anhui University, Hefei 230039, China
Funds: Project supported by the Student Research Training Program of Beihang University, China, the Research Fund of State Key Laboratory of Software Development Environment, China (Grant No. SKLSDE-2011ZX-18), the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-09-0031), the 211 Project of Anhui University, China (Grant No. 02303319), and the National Natural Science Foundation of China (Grant Nos. 10975008, 11105010, 11035007, 11128510).

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Cited By

[1]	Komatsu E, Dunkley J, Nolta M R, Bennett C L, Gold B, Hinshaw G, Jarosik N, Larson D, Limon M, Page L, Spergel D N, Halpern M, Hill R S, Kogut A, Meyer S S, Tucker G S, Weiland J L, Wollack E, Wrightet E L 2009 Astrophys. J. Suppl. Ser. 180 330
[2]
[3]	Burbidge E M, Burbidge G R, Fowler W A, Hoyle F 1957 Rev. Mod. Phys. 29 547
[4]	Cowan J J, Pfeiffer B, Kratz K L, Thielemann F K, Sneden C, Burles S, Tytler D, Beers T C 1999 Astrophys. J. 521 194
[5]
[6]	Niu Z M, Sun B H, Meng J 2009 Phys. Rev. C 80 065806
[7]
[8]	Meng J, Niu Z M, Liang H Z, Sun B H 2011 Sci. Chin. G 54 s119
[9]
[10]	Carretta E, Gratton R G, Clementini G, Pecci F F 2000 Astrophys. J. 533 215
[11]
[12]	Hansen B M S, Richer H B, Fahlman G G, Stetson P B, Brewer J, Currie T, Gibson B K, Ibata R, Rich R M, Shara M M 2004 Astrophys. J. Suppl. Ser. 155 551
[13]
[14]
[15]	Rutherford E 1929 Nature 123 313
[16]
[17]	Noddack I, Noddack W 1930 Naturwiss. 35 59
[18]	Fowler W A, Hoyle F 1960 Ann. Phys. 10 280
[19]
[20]
[21]	Butcher H R 1987 Nature 328 127
[22]
[23]	Franois P, Spite M, Spite F 1993 Astron. Astrophys. 274 821
[24]
[25]	Cowan J J, Sneden C 2006 Nature 440 1151
[26]
[27]	Sneden C, McWilliam A, Preston G W, Cowan J J, Burris D L, Armosky B J 1996 Astrophys. J. 467 819
[28]	Westin J, Sneden C, Gustafsson B, Cowan J J 2000 Astrophys. J. 530 783
[29]
[30]
[31]	Hill V, Plez B, Cayrel R, Beers T C, Nordstrm B, Andersen J, Spite M, Spite F, Barbuy B, Bonifacio P, Depagne E, Franois P, Primas F 2002 Astron. Astrophys. 387 560
[32]	Frebel A, Christlieb N, Norris J E, Thom C, Beers T C, Rhee J 2007 Astrophys. J. 660 L117
[33]
[34]
[35]	Cayrel R, Hill V, Beers T C, Barbuy B, Spite M, Spite F, Plez B, Andersen J, Bonifacio P, Franois P, Molaro P, Nordstrm B, Primas F 2001 Nature 409 691
[36]
[37]	Cowan J J, Sneden C, Burles S, Ivans I I, Beers T C, Truran J W, Lawler J E, Primas F, Fuller G M, Pfeiffer B, Kratz K L 2002 Astrophys. J. 572 861
[38]	Goriely S, Arnould M 2001 Astron. Astrophys. 379 1113
[39]
[40]
[41]	Schatz H, Toenjes R, Pfeiffer B, Beers T C, Cowan J J, Hill V, Kratz K L 2002 Astrophys. J. 579 626
[42]
[43]	Audi G, Bersillon O, Blachot J, Wapstra A H 2003 Nucl. Phys. A 729 3
[44]	Sun B, Knbel R, Litvinov Y A, Geissel H, Meng J, Beckert K, Bosch F, Boutin D, Brandau C, Chen L, Cullen I J, Dimopoulou C, Fabian B, Hausmann M, Kozhuharov C, Litvinov S A, Mazzocco M, Montes F, Mnzenberg G, Musumarra A, Nakajima S, Nociforo C, Nolden F, Ohtsubo T, Ozawa A, Patyk Z, Pla W R, Scheidenberger C, Steck M, Suzuki T, Walker P M, Weick H, Winckler N, Winkler M, Yamaguchi T 2008 Nucl. Phys. A 812 1
[45]
[46]	Duflo J, Zuker A P 1995 Phys. Rev. C 52 R23
[47]
[48]	Koura H, Tachibana T, Uno M, Yamada M 2005 Prog. Theor. Phys. 113 305
[49]
[50]	Goriely S, Chamel N, Pearson J M 2009 Phys. Rev. Lett. 102 152503
[51]
[52]	Geng L S, Toki H, Meng J 2005 Prog. Theor. Phys. 113 785
[53]
[54]	Kratz K L, Farouqi K, Pfeiffer B, Truran J W, Sneden C, Cowan J J 2007 Astrophys. J. 662 39
[55]
[56]	Sun B, Montes F, Geng L S, Geissel H, Litvinov Y A, Meng J 2008 Phys. Rev. C 78 025806
[57]
[58]
[59]	Sun B H, Meng J 2008 Chin. Phys. Lett. 25 2429
[60]
[61]	Mller P, Nix J R, Myers W D, Swiatecki W J 1995 At. Data Nucl. Data Tables 59 185
[62]
[63]	Pearson J M, Nayak R C, Goriely S 1996 Phys. Lett. B 387 455
[64]
[65]	Mller P, Pfeiffer B, Kratz K L 2003 Phys. Rev. C 67 055802
[66]
[67]	Sneden C, Cowan J J, Gallino R 2008 Annu. Rev. Astron. Astrophys. 46 241
[68]	Simmerer J, Sneden C, Cowan J J, Collier J, Woolf V M, Lawler J E 2004 Astrophys. J. 617 1091
[69]
[70]
[71]	Lodders K 2003 Astrophys. J. 591 1220
[72]	Otsuki K, Mathews G J, Kajino T 2003 New Astron. 8 767
[73]

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Vol. 61, Issue 11 - 2012-06-05

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