r-PROCESS CALCULATIONS WITH A MICROSCOPIC DESCRIPTION OF THE FISSION PROCESS

被引：1

作者：

Giuliani, S. A. ^{[1
]}

Martinez-Pinedo, G. ^{[1
]}

Robledo, L. M. ^{[2
]}

Wu, M. -R. ^{[1
,3
]}

机构：

[1] Tech Univ Darmstadt, Theoriezentrum, Inst Kernphys, Schlossgartenstr 2, D-64289 Darmstadt, Germany

[2] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

[3] Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

来源：

ACTA PHYSICA POLONICA B | 2017年 / 48卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.5506/APhysPolB.48.299

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We computed the fission properties of nuclei in the range of 84 <= Z <= 120 and 118 <= N <= 250 using the Barcelona-Catania-Paris-Madrid (BCPM) Energy Density Functional (EDF). For the first time, a set of spontaneous and neutron-induced fission rates were obtained from a microscopic calculation of nuclear collective inertias. These fission rates were used as a nuclear input in the estimation of nucleosynthesis yields on neutron star mergers. We founded that the increased stability against the fission process predicted by the BCPM allows the formation of nuclei up to A = 286. This constitutes a first step in a systematic exploration of different sets of fission rates on r-process abundance predictions.

引用

页码：299 / 304

页数：6

共 12 条

[1]

Duguet T., 2001, PHYS REV C, V65

[2] Fission properties of the Barcelona-Catania-Paris-Madrid energy density functional [J].

Giuliani, Samuel A. ;

Robledo, Luis M. .

PHYSICAL REVIEW C, 2013, 88 (05)

[3] The fundamental role of fission during r-process nucleosynthesis in neutron star mergers [J].

Goriely, S. .

EUROPEAN PHYSICAL JOURNAL A, 2015, 51 (02) :1-21

[4] Impact of Nuclear Mass Uncertainties on the r Process [J].

Martin, D. ;

Arcones, A. ;

Nazarewicz, W. ;

Olsen, E. .

PHYSICAL REVIEW LETTERS, 2016, 116 (12)

[5] Selected topics in nuclear astrophysics [J].

Martinez-Pinedo, G. .

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 2008, 156 (1) :123-149

[6] Nuclear robustness of the r process in neutron-star mergers [J].

Mendoza-Temis, Joel de Jesus ;

Wu, Meng-Ru ;

Langanke, Karlheinz ;

Martinez-Pinedo, Gabriel ;

Bauswein, Andreas ;

Janka, Hans-Thomas .

PHYSICAL REVIEW C, 2015, 92 (05)

[7] NUCLEAR GROUND-STATE MASSES AND DEFORMATIONS [J].

MOLLER, P ;

NIX, JR ;

MYERS, WD ;

SWIATECKI, WJ .

ATOMIC DATA AND NUCLEAR DATA TABLES, 1995, 59 (02) :185-381

[8] New calculations of gross β-decay properties for astrophysical applications:: Speeding-up the classical r process -: art. no. 055802 [J].

Möller, P ;

Pfeiffer, B ;

Kratz, KL .

PHYSICAL REVIEW C, 2003, 67 (05)

[9] Thomas-Fermi fission barriers [J].

Myers, WD ;

Swiatecki, WJ .

PHYSICAL REVIEW C, 1999, 60 (01) :4

[10] Neutron-induced astrophysical reaction rates for translead nuclei [J].

Panov, I. V. ;

Korneev, I. Yu ;

Rauscher, T. ;

Martinez-Pinedo, G. ;

Kelic-Heil, A. ;

Zinner, N. T. ;

Thielemann, F. -K. .

ASTRONOMY & ASTROPHYSICS, 2010, 513

← 1 2 →