Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS

被引：134

作者：

Kurcewicz, J. ^{[1
]}

Farinon, F. ^{[1
,2
]}

Geissel, H. ^{[1
,2
]}

Pietri, S. ^{[1
]}

Nociforo, C. ^{[1
]}

Prochazka, A. ^{[1
,2
]}

Weick, H. ^{[1
]}

Winfield, J. S. ^{[1
]}

Estrade, A. ^{[1
,3
]}

Allegro, P. R. P. ^{[4
]}

Bail, A. ^{[5
]}

Belier, G. ^{[5
]}

Benlliure, J. ^{[6
]}

Benzoni, G. ^{[7
]}

Bunce, M. ^{[8
]}

Bowry, M. ^{[8
]}

Caballero-Folch, R. ^{[9
]}

Dillmann, I. ^{[1
,2
]}

Evdokimov, A. ^{[1
,2
]}

Gerl, J. ^{[1
]}

Gottardo, A. ^{[10
]}

Gregor, E. ^{[1
]}

Janik, R. ^{[11
]}

Kelic-Heil, A. ^{[1
]}

Knoebel, R. ^{[1
]}

Kubo, T. ^{[12
]}

Litvinov, Yu. A. ^{[1
,13
]}

Merchan, E. ^{[1
,14
]}

Mukha, I. ^{[1
]}

Naqvi, F. ^{[1
,15
]}

Pfuetzner, M. ^{[1
,16
]}

Pomorski, M. ^{[16
]}

Podolyak, Zs. ^{[8
]}

Regan, P. H. ^{[8
]}

Riese, B. ^{[1
,2
]}

Ricciardi, M. V. ^{[1
]}

Scheidenberger, C. ^{[1
,2
]}

Sitar, B. ^{[11
]}

Spiller, P. ^{[1
]}

Stadlmann, J. ^{[1
]}

Strmen, R. ^{[11
]}

Sun, B. ^{[2
,17
]}

Szarka, I. ^{[11
]}

Taieb, J. ^{[5
]}

Terashima, S. ^{[1
,12
]}

Valiente-Dobon, J. J. ^{[10
]}

Winkler, M. ^{[1
]}

Woods, Ph. ^{[18
]}

机构：

[1] GSI Helmholtzzentrurn Schwerionenforsch, D-64291 Darmstadt, Germany

[2] Univ Giessen, D-35392 Giessen, Germany

[3] St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada

[4] Univ Sao Paulo, Inst Phys, BR-05508090 Sao Paulo, Brazil

[5] CEA DAM DiF, F-91290 Arpajon, France

[6] Univ Santiago de Compostela, E-15706 Santiago De Compostela, Spain

[7] INFN Sez Milano, I-20133 Milan, Italy

[8] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

[9] Univ Politecn Cataluna, ES-08034 Barcelona, Spain

[10] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy

[11] Comenius Univ, Fac Math & Phys, Bratislava 84248, Slovakia

[12] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[13] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[14] Tech Univ Darmstadt, Inst Kernphys, D-62289 Darmstadt, Germany

[15] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany

[16] Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland

[17] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China

[18] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland

来源：

PHYSICS LETTERS B | 2012年 / 717卷 / 4-5期

关键词：

SPALLATION REACTION U-238+P; RELATIVISTIC HEAVY-IONS; EXOTIC NUCLEI; FRAGMENTATION; FISSION; THORIUM; MATTER; BEAMS;

D O I：

10.1016/j.physletb.2012.09.021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the high-resolution performance of the fragment separator FRS at GSI we have discovered 60 new neutron-rich isotopes in the atomic number range of 60 <= Z <= 78. The new isotopes were unambiguously identified in reactions with a U-238 beam impinging on a Be target at 1 GeV/nucleon. The production cross-section for the new isotopes have been measured down to the pico-barn level and compared with predictions of different model calculations. For elements above hafnium fragmentation is the dominant reaction mechanism which creates the new isotopes, whereas fission plays a dominant role for the production of the new isotopes up to thulium. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：371 / 375

页数：5

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