Have superheavy elements been produced in nature?

被引：68

作者：

Petermann, I. ^{[1
]}

Langanke, K. ^{[2
,3
,4
]}

Martinez-Pinedo, G. ^{[2
,3
]}

Panov, I. V. ^{[5
,6
]}

Reinhard, P. -G. ^{[7
]}

Thielemann, F. -K. ^{[5
]}

机构：

[1] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[3] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[4] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

[5] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

[6] Inst Theoret & Expt Phys, Moscow 117259, Russia

[7] Univ Erlangen Nurnberg, Inst Theoret Phys 2, D-91058 Erlangen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2012年 / 48卷 / 09期

基金：

瑞士国家科学基金会;

关键词：

R-PROCESS NUCLEOSYNTHESIS; ASTROPHYSICAL REACTION-RATES; NEUTRINO-DRIVEN WINDS; STATISTICAL-MODEL CALCULATIONS; FISSION HALF-LIVES; CROSS-SECTIONS; STAR MERGERS; NUCLEAR-PHYSICS; MASS FORMULA; GROUND-STATE;

D O I：

10.1140/epja/i2012-12122-6

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：

We discuss the possibility whether superheavy elements can be produced in Nature by the astrophysical rapid neutron capture process. To this end we have performed fully dynamical network r-process calculations assuming an environment with neutron-to-seed ratio large enough to produce superheavy nuclei. Our calculations include two sets of nuclear masses and fission barriers and include all possible fission channels and the associated fission yield distributions. Our calculations produce superheavy nuclei with A approximate to 300 that however decay on time scales of days.

引用

页码：1 / 11

页数：11

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